./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe013_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/safe013_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 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:04:43,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:04:43,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:04:43,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:04:43,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:04:43,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:04:43,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:04:43,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:04:43,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:04:43,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:04:43,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:04:43,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:04:43,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:04:43,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:04:43,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:04:43,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:04:43,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:04:43,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:04:43,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:04:43,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:04:43,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:04:43,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:04:43,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:04:43,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:04:43,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:04:43,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:04:43,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:04:43,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:04:43,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:04:43,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:04:43,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:04:43,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:04:43,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:04:43,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:04:43,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:04:43,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:04:43,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:04:43,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:04:43,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:04:43,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:04:43,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:04:43,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:04:43,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:04:43,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:04:43,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:04:43,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:04:43,675 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:04:43,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:04:43,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:04:43,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:04:43,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:04:43,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:04:43,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:04:43,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:04:43,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:04:43,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:04:43,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:04:43,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:04:43,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:04:43,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:04:43,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:04:43,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:04:43,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:04:43,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:04:43,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:04:43,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:04:43,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:04:43,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:04:43,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:04:43,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:04:43,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:04:43,679 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 -> 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 [2020-10-20 03:04:43,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:04:43,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:04:43,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:04:43,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:04:43,904 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:04:43,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-10-20 03:04:43,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47c080255/70ea15cdffa647458159e59cf0d58c96/FLAGf45b31dcf [2020-10-20 03:04:44,467 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:04:44,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-10-20 03:04:44,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47c080255/70ea15cdffa647458159e59cf0d58c96/FLAGf45b31dcf [2020-10-20 03:04:44,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47c080255/70ea15cdffa647458159e59cf0d58c96 [2020-10-20 03:04:44,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:04:44,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:04:44,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:44,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:04:44,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:04:44,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:44" (1/1) ... [2020-10-20 03:04:44,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a46f932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:44, skipping insertion in model container [2020-10-20 03:04:44,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:44" (1/1) ... [2020-10-20 03:04:44,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:04:44,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:04:45,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:45,560 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:04:45,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:45,737 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:04:45,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45 WrapperNode [2020-10-20 03:04:45,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:45,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:45,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:04:45,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:04:45,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:45,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:04:45,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:04:45,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:04:45,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (1/1) ... [2020-10-20 03:04:45,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:04:45,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:04:45,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:04:45,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:04:45,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (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 03:04:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:04:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:04:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:04:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:04:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:04:45,918 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:04:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:04:45,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:04:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:04:45,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:04:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:04:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:04:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:04:45,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:04:45,922 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 03:04:46,310 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:04:46,311 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:04:46,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:46 BoogieIcfgContainer [2020-10-20 03:04:46,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:04:46,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:04:46,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:04:46,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:04:46,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:04:44" (1/3) ... [2020-10-20 03:04:46,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e07d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:46, skipping insertion in model container [2020-10-20 03:04:46,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:45" (2/3) ... [2020-10-20 03:04:46,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e07d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:46, skipping insertion in model container [2020-10-20 03:04:46,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:46" (3/3) ... [2020-10-20 03:04:46,322 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-10-20 03:04:46,334 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:04:46,334 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:04:46,341 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:04:46,342 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:04:46,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,372 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,372 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,374 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,374 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,374 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,375 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,375 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,375 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,375 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,376 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,376 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,380 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,381 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,392 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:46,409 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:04:46,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:04:46,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:04:46,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:04:46,443 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:04:46,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:04:46,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:04:46,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:04:46,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:04:46,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:04:46,464 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:04:46,466 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:46,468 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:46,470 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:46,515 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:04:46,516 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:04:46,521 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:04:46,524 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:04:47,978 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-20 03:04:48,405 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-20 03:04:48,518 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-20 03:04:48,552 INFO L132 LiptonReduction]: Checked pairs total: 2822 [2020-10-20 03:04:48,552 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-20 03:04:48,559 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:04:48,589 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:04:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:04:48,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:04:48,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:48,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:48,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:48,608 INFO L82 PathProgramCache]: Analyzing trace with hash 406549293, now seen corresponding path program 1 times [2020-10-20 03:04:48,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:48,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15194521] [2020-10-20 03:04:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:48,826 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 03:04:48,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15194521] [2020-10-20 03:04:48,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:48,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:48,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918722579] [2020-10-20 03:04:48,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:04:48,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:48,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:04:48,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:04:48,849 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:04:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:48,883 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:04:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:04:48,884 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:04:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:48,903 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:04:48,903 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:04:48,905 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 03:04:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:04:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:04:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:04:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:04:48,983 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:04:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:48,985 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:04:48,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:04:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:04:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:04:48,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:48,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:48,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:04:48,987 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:48,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:48,988 INFO L82 PathProgramCache]: Analyzing trace with hash -281880887, now seen corresponding path program 1 times [2020-10-20 03:04:48,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:48,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459482819] [2020-10-20 03:04:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:49,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459482819] [2020-10-20 03:04:49,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:49,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:49,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88381392] [2020-10-20 03:04:49,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:49,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:49,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:49,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:49,102 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-20 03:04:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:49,122 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-20 03:04:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:49,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:04:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:49,126 INFO L225 Difference]: With dead ends: 217 [2020-10-20 03:04:49,126 INFO L226 Difference]: Without dead ends: 217 [2020-10-20 03:04:49,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-20 03:04:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-20 03:04:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-20 03:04:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-20 03:04:49,147 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-20 03:04:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:49,148 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-20 03:04:49,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-20 03:04:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:04:49,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:49,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:49,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:04:49,151 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:49,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:49,151 INFO L82 PathProgramCache]: Analyzing trace with hash -389577111, now seen corresponding path program 1 times [2020-10-20 03:04:49,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:49,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497387435] [2020-10-20 03:04:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:49,246 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 03:04:49,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497387435] [2020-10-20 03:04:49,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:49,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:49,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725036571] [2020-10-20 03:04:49,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:49,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:49,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:49,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:49,249 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-10-20 03:04:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:49,278 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-20 03:04:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:49,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:04:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:49,280 INFO L225 Difference]: With dead ends: 136 [2020-10-20 03:04:49,281 INFO L226 Difference]: Without dead ends: 136 [2020-10-20 03:04:49,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-20 03:04:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-20 03:04:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-20 03:04:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-20 03:04:49,291 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-20 03:04:49,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:49,291 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-20 03:04:49,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-20 03:04:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:04:49,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:49,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:49,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:04:49,294 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:49,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1823296511, now seen corresponding path program 1 times [2020-10-20 03:04:49,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:49,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167116096] [2020-10-20 03:04:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:49,363 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 03:04:49,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167116096] [2020-10-20 03:04:49,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:49,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:49,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832210756] [2020-10-20 03:04:49,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:49,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:49,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:49,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:49,366 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-10-20 03:04:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:49,399 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-20 03:04:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:49,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 03:04:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:49,400 INFO L225 Difference]: With dead ends: 109 [2020-10-20 03:04:49,401 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 03:04:49,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:49,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 03:04:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-20 03:04:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 03:04:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-20 03:04:49,407 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-20 03:04:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:49,408 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-20 03:04:49,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-20 03:04:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:49,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:49,410 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 03:04:49,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:04:49,410 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:49,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1915158341, now seen corresponding path program 1 times [2020-10-20 03:04:49,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:49,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205898637] [2020-10-20 03:04:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:49,574 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 03:04:49,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205898637] [2020-10-20 03:04:49,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:49,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:49,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093002132] [2020-10-20 03:04:49,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:49,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:49,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:49,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:49,578 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-10-20 03:04:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:49,602 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-10-20 03:04:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:49,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-20 03:04:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:49,603 INFO L225 Difference]: With dead ends: 135 [2020-10-20 03:04:49,604 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 03:04:49,604 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 03:04:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 03:04:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-20 03:04:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 03:04:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-20 03:04:49,613 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-10-20 03:04:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:49,613 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-20 03:04:49,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-20 03:04:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:49,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:49,615 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 03:04:49,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:04:49,616 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:49,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1566003365, now seen corresponding path program 2 times [2020-10-20 03:04:49,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:49,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774520318] [2020-10-20 03:04:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:49,723 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 03:04:49,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774520318] [2020-10-20 03:04:49,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:49,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:49,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622533817] [2020-10-20 03:04:49,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:49,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:49,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:49,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:49,728 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-20 03:04:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:49,771 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-10-20 03:04:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:49,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:04:49,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:49,772 INFO L225 Difference]: With dead ends: 69 [2020-10-20 03:04:49,772 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 03:04:49,773 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 03:04:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 03:04:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 03:04:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 03:04:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-10-20 03:04:49,778 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-10-20 03:04:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:49,779 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-10-20 03:04:49,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-10-20 03:04:49,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:49,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:49,779 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 03:04:49,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:04:49,780 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:49,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1541967813, now seen corresponding path program 3 times [2020-10-20 03:04:49,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:49,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145772103] [2020-10-20 03:04:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:49,873 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 03:04:49,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145772103] [2020-10-20 03:04:49,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:49,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:49,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847038447] [2020-10-20 03:04:49,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:49,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:49,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:49,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:49,878 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-10-20 03:04:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:49,916 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-10-20 03:04:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:49,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:04:49,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:49,917 INFO L225 Difference]: With dead ends: 30 [2020-10-20 03:04:49,917 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:04:49,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:04:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:04:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:04:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:04:49,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:04:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:49,919 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:04:49,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:04:49,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:04:49,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:04:49,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:04:49 BasicIcfg [2020-10-20 03:04:49,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:04:49,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:04:49,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:04:49,926 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:04:49,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:46" (3/4) ... [2020-10-20 03:04:49,930 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:04:49,937 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:04:49,938 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:04:49,938 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:04:49,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:04:49,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:04:49,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:49,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:49,994 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:04:49,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:04:49,996 INFO L168 Benchmark]: Toolchain (without parser) took 5181.51 ms. Allocated memory was 34.6 MB in the beginning and 75.0 MB in the end (delta: 40.4 MB). Free memory was 14.5 MB in the beginning and 48.7 MB in the end (delta: -34.1 MB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:49,997 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 33.6 MB. Free memory was 10.7 MB in the beginning and 10.7 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. [2020-10-20 03:04:49,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 919.26 ms. Allocated memory was 34.6 MB in the beginning and 44.6 MB in the end (delta: 10.0 MB). Free memory was 13.7 MB in the beginning and 15.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:49,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.30 ms. Allocated memory is still 44.6 MB. Free memory was 15.1 MB in the beginning and 13.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:50,000 INFO L168 Benchmark]: Boogie Preprocessor took 28.60 ms. Allocated memory is still 44.6 MB. Free memory was 13.0 MB in the beginning and 11.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:50,000 INFO L168 Benchmark]: RCFGBuilder took 481.50 ms. Allocated memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: 1.0 MB). Free memory was 11.2 MB in the beginning and 18.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:50,001 INFO L168 Benchmark]: TraceAbstraction took 3610.34 ms. Allocated memory was 45.6 MB in the beginning and 75.0 MB in the end (delta: 29.4 MB). Free memory was 17.9 MB in the beginning and 52.5 MB in the end (delta: -34.6 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 03:04:50,002 INFO L168 Benchmark]: Witness Printer took 69.61 ms. Allocated memory is still 75.0 MB. Free memory was 52.5 MB in the beginning and 48.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:50,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 33.6 MB. Free memory was 10.7 MB in the beginning and 10.7 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 919.26 ms. Allocated memory was 34.6 MB in the beginning and 44.6 MB in the end (delta: 10.0 MB). Free memory was 13.7 MB in the beginning and 15.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 62.30 ms. Allocated memory is still 44.6 MB. Free memory was 15.1 MB in the beginning and 13.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.60 ms. Allocated memory is still 44.6 MB. Free memory was 13.0 MB in the beginning and 11.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 481.50 ms. Allocated memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: 1.0 MB). Free memory was 11.2 MB in the beginning and 18.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3610.34 ms. Allocated memory was 45.6 MB in the beginning and 75.0 MB in the end (delta: 29.4 MB). Free memory was 17.9 MB in the beginning and 52.5 MB in the end (delta: -34.6 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 69.61 ms. Allocated memory is still 75.0 MB. Free memory was 52.5 MB in the beginning and 48.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1022 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2822 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 129 SDtfs, 85 SDslu, 171 SDs, 0 SdLazy, 55 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...