./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.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/safe014_tso.oepc.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 76a5caa3071fd3b7fdb0794a63eaafb12ee9a50e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:04:52,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:04:52,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:04:52,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:04:52,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:04:52,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:04:52,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:04:52,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:04:52,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:04:52,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:04:52,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:04:52,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:04:52,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:04:52,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:04:52,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:04:52,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:04:52,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:04:52,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:04:52,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:04:52,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:04:52,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:04:52,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:04:52,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:04:52,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:04:52,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:04:52,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:04:52,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:04:52,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:04:52,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:04:52,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:04:52,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:04:52,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:04:52,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:04:52,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:04:52,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:04:52,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:04:52,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:04:52,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:04:52,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:04:52,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:04:52,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:04:52,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:04:52,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:04:52,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:04:52,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:04:52,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:04:52,599 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:04:52,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:04:52,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:04:52,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:04:52,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:04:52,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:04:52,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:04:52,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:04:52,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:04:52,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:04:52,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:04:52,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:04:52,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:04:52,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:04:52,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:04:52,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:04:52,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:04:52,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:04:52,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:04:52,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:04:52,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:04:52,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:04:52,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:04:52,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:04:52,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:04:52,603 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 -> 76a5caa3071fd3b7fdb0794a63eaafb12ee9a50e [2020-10-20 03:04:52,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:04:52,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:04:52,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:04:52,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:04:52,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:04:52,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2020-10-20 03:04:52,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5193e68c8/d3117af6d1274089b1d598bb8a7c7e10/FLAG5b0f59acc [2020-10-20 03:04:53,503 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:04:53,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2020-10-20 03:04:53,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5193e68c8/d3117af6d1274089b1d598bb8a7c7e10/FLAG5b0f59acc [2020-10-20 03:04:53,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5193e68c8/d3117af6d1274089b1d598bb8a7c7e10 [2020-10-20 03:04:53,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:04:53,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:04:53,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:53,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:04:53,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:04:53,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:53" (1/1) ... [2020-10-20 03:04:53,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa48d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:53, skipping insertion in model container [2020-10-20 03:04:53,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:53" (1/1) ... [2020-10-20 03:04:53,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:04:53,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:04:54,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:54,330 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:04:54,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:54,460 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:04:54,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54 WrapperNode [2020-10-20 03:04:54,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:54,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:54,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:04:54,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:04:54,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:54,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:04:54,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:04:54,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:04:54,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (1/1) ... [2020-10-20 03:04:54,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:04:54,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:04:54,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:04:54,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:04:54,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (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 03:04:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:04:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:04:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:04:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:04:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:04:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:04:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:04:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:04:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:04:54,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:04:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:04:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:04:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:04:54,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:04:54,630 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 03:04:55,039 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:04:55,040 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:04:55,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:55 BoogieIcfgContainer [2020-10-20 03:04:55,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:04:55,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:04:55,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:04:55,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:04:55,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:04:53" (1/3) ... [2020-10-20 03:04:55,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317f0143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:55, skipping insertion in model container [2020-10-20 03:04:55,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:54" (2/3) ... [2020-10-20 03:04:55,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317f0143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:55, skipping insertion in model container [2020-10-20 03:04:55,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:55" (3/3) ... [2020-10-20 03:04:55,053 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-10-20 03:04:55,065 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:04:55,066 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:04:55,074 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:04:55,075 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:04:55,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,109 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,109 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,117 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,129 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,130 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,130 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,130 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,133 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,133 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,133 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,134 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:55,135 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:04:55,149 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:04:55,167 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:04:55,167 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:04:55,167 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:04:55,167 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:04:55,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:04:55,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:04:55,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:04:55,168 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:04:55,182 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:04:55,186 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:55,189 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:55,191 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:55,242 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:04:55,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:04:55,250 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 57 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 03:04:55,254 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:04:57,214 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-20 03:04:57,317 INFO L132 LiptonReduction]: Checked pairs total: 2779 [2020-10-20 03:04:57,317 INFO L134 LiptonReduction]: Total number of compositions: 70 [2020-10-20 03:04:57,324 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:04:57,366 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:04:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:04:57,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:04:57,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:57,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:57,384 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:57,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:57,388 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-10-20 03:04:57,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:57,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43164271] [2020-10-20 03:04:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:57,578 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 03:04:57,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43164271] [2020-10-20 03:04:57,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:57,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:57,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388085432] [2020-10-20 03:04:57,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:04:57,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:57,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:04:57,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:04:57,604 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:04:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:57,639 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:04:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:04:57,641 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:04:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:57,659 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:04:57,659 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:04:57,661 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 03:04:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:04:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:04:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:04:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:04:57,746 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:04:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:57,748 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:04:57,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:04:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:04:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:04:57,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:57,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:57,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:04:57,750 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:57,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-10-20 03:04:57,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:57,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911483075] [2020-10-20 03:04:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:57,916 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 03:04:57,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911483075] [2020-10-20 03:04:57,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:57,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:57,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069499103] [2020-10-20 03:04:57,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:57,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:57,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:57,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:57,919 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-10-20 03:04:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:58,034 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-20 03:04:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:04:58,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-20 03:04:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:58,046 INFO L225 Difference]: With dead ends: 330 [2020-10-20 03:04:58,046 INFO L226 Difference]: Without dead ends: 266 [2020-10-20 03:04:58,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:58,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-20 03:04:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-20 03:04:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-20 03:04:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-20 03:04:58,088 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-20 03:04:58,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:58,088 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-20 03:04:58,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-20 03:04:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:04:58,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:58,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:58,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:04:58,093 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash 585999155, now seen corresponding path program 1 times [2020-10-20 03:04:58,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:58,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909824917] [2020-10-20 03:04:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:58,211 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 03:04:58,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909824917] [2020-10-20 03:04:58,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:58,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:58,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576229970] [2020-10-20 03:04:58,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:04:58,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:58,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:04:58,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:58,213 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-10-20 03:04:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:58,356 INFO L93 Difference]: Finished difference Result 344 states and 924 transitions. [2020-10-20 03:04:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 03:04:58,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 03:04:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:58,359 INFO L225 Difference]: With dead ends: 344 [2020-10-20 03:04:58,359 INFO L226 Difference]: Without dead ends: 170 [2020-10-20 03:04:58,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-20 03:04:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-20 03:04:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-20 03:04:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-20 03:04:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 428 transitions. [2020-10-20 03:04:58,371 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 428 transitions. Word has length 10 [2020-10-20 03:04:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:58,371 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 428 transitions. [2020-10-20 03:04:58,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:04:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 428 transitions. [2020-10-20 03:04:58,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:04:58,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:58,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:58,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:04:58,374 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:58,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:58,375 INFO L82 PathProgramCache]: Analyzing trace with hash 229025079, now seen corresponding path program 1 times [2020-10-20 03:04:58,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:58,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908580053] [2020-10-20 03:04:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:58,442 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 03:04:58,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908580053] [2020-10-20 03:04:58,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:58,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:58,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563185065] [2020-10-20 03:04:58,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:58,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:58,445 INFO L87 Difference]: Start difference. First operand 170 states and 428 transitions. Second operand 4 states. [2020-10-20 03:04:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:58,471 INFO L93 Difference]: Finished difference Result 182 states and 442 transitions. [2020-10-20 03:04:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:58,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:04:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:58,473 INFO L225 Difference]: With dead ends: 182 [2020-10-20 03:04:58,474 INFO L226 Difference]: Without dead ends: 158 [2020-10-20 03:04:58,474 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 03:04:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-20 03:04:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-20 03:04:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-20 03:04:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 390 transitions. [2020-10-20 03:04:58,482 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 390 transitions. Word has length 12 [2020-10-20 03:04:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:58,483 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 390 transitions. [2020-10-20 03:04:58,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 390 transitions. [2020-10-20 03:04:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:04:58,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:58,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:58,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:04:58,485 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1697755731, now seen corresponding path program 1 times [2020-10-20 03:04:58,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:58,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565498405] [2020-10-20 03:04:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:58,626 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 03:04:58,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565498405] [2020-10-20 03:04:58,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:58,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:04:58,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406884075] [2020-10-20 03:04:58,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 03:04:58,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:58,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 03:04:58,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:58,632 INFO L87 Difference]: Start difference. First operand 158 states and 390 transitions. Second operand 7 states. [2020-10-20 03:04:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:58,741 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-20 03:04:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 03:04:58,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-20 03:04:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:58,743 INFO L225 Difference]: With dead ends: 172 [2020-10-20 03:04:58,743 INFO L226 Difference]: Without dead ends: 130 [2020-10-20 03:04:58,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-20 03:04:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-20 03:04:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-20 03:04:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-20 03:04:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-20 03:04:58,750 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-20 03:04:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:58,750 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-20 03:04:58,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 03:04:58,751 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-20 03:04:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:04:58,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:58,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:58,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:04:58,753 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:58,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:58,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1286592520, now seen corresponding path program 1 times [2020-10-20 03:04:58,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:58,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645911897] [2020-10-20 03:04:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:58,805 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 03:04:58,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645911897] [2020-10-20 03:04:58,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:58,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:58,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316634975] [2020-10-20 03:04:58,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:58,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:58,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:58,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:58,808 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 4 states. [2020-10-20 03:04:58,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:58,833 INFO L93 Difference]: Finished difference Result 134 states and 317 transitions. [2020-10-20 03:04:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:58,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:04:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:58,835 INFO L225 Difference]: With dead ends: 134 [2020-10-20 03:04:58,836 INFO L226 Difference]: Without dead ends: 116 [2020-10-20 03:04:58,836 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 03:04:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-20 03:04:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-20 03:04:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-20 03:04:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-10-20 03:04:58,841 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 13 [2020-10-20 03:04:58,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:58,841 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-10-20 03:04:58,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:58,842 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-10-20 03:04:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:04:58,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:58,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:58,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:04:58,844 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:58,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-10-20 03:04:58,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:58,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617264494] [2020-10-20 03:04:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:58,898 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 03:04:58,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617264494] [2020-10-20 03:04:58,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:58,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:58,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925465182] [2020-10-20 03:04:58,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:58,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:58,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:58,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:58,901 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 4 states. [2020-10-20 03:04:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:58,921 INFO L93 Difference]: Finished difference Result 137 states and 301 transitions. [2020-10-20 03:04:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:58,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 03:04:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:58,923 INFO L225 Difference]: With dead ends: 137 [2020-10-20 03:04:58,923 INFO L226 Difference]: Without dead ends: 97 [2020-10-20 03:04:58,924 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 03:04:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-20 03:04:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-20 03:04:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 03:04:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 208 transitions. [2020-10-20 03:04:58,928 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 208 transitions. Word has length 14 [2020-10-20 03:04:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:58,929 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 208 transitions. [2020-10-20 03:04:58,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 208 transitions. [2020-10-20 03:04:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:04:58,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:58,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:58,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:04:58,939 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:58,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:58,940 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-10-20 03:04:58,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:58,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581582681] [2020-10-20 03:04:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:59,019 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 03:04:59,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581582681] [2020-10-20 03:04:59,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:59,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:59,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614428265] [2020-10-20 03:04:59,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:59,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:59,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:59,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:59,021 INFO L87 Difference]: Start difference. First operand 97 states and 208 transitions. Second operand 5 states. [2020-10-20 03:04:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:59,068 INFO L93 Difference]: Finished difference Result 95 states and 185 transitions. [2020-10-20 03:04:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:59,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 03:04:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:59,070 INFO L225 Difference]: With dead ends: 95 [2020-10-20 03:04:59,070 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 03:04:59,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 03:04:59,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-20 03:04:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 03:04:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 129 transitions. [2020-10-20 03:04:59,079 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 129 transitions. Word has length 15 [2020-10-20 03:04:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:59,080 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 129 transitions. [2020-10-20 03:04:59,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:59,080 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2020-10-20 03:04:59,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 03:04:59,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:59,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:59,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:04:59,081 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:59,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:59,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-10-20 03:04:59,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:59,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613603940] [2020-10-20 03:04:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:59,177 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 03:04:59,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613603940] [2020-10-20 03:04:59,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:59,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:04:59,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227589334] [2020-10-20 03:04:59,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:04:59,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:59,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:04:59,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:59,179 INFO L87 Difference]: Start difference. First operand 70 states and 129 transitions. Second operand 6 states. [2020-10-20 03:04:59,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:59,236 INFO L93 Difference]: Finished difference Result 63 states and 113 transitions. [2020-10-20 03:04:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:04:59,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 03:04:59,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:59,237 INFO L225 Difference]: With dead ends: 63 [2020-10-20 03:04:59,238 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 03:04:59,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 03:04:59,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 03:04:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-20 03:04:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 03:04:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-20 03:04:59,242 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-10-20 03:04:59,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:59,242 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-20 03:04:59,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:04:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-20 03:04:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:59,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:59,243 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 03:04:59,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:04:59,243 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:59,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-10-20 03:04:59,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:59,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617432200] [2020-10-20 03:04:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:59,328 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 03:04:59,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617432200] [2020-10-20 03:04:59,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:59,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:59,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110125835] [2020-10-20 03:04:59,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:59,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:59,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:59,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:59,331 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-20 03:04:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:59,371 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-20 03:04:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:59,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:04:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:59,372 INFO L225 Difference]: With dead ends: 65 [2020-10-20 03:04:59,372 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 03:04:59,373 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 03:04:59,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 03:04:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-20 03:04:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 03:04:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2020-10-20 03:04:59,388 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 18 [2020-10-20 03:04:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:59,389 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2020-10-20 03:04:59,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2020-10-20 03:04:59,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:59,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:59,390 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 03:04:59,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 03:04:59,390 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:59,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:59,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1171950116, now seen corresponding path program 2 times [2020-10-20 03:04:59,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:59,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537559082] [2020-10-20 03:04:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:59,455 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 03:04:59,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537559082] [2020-10-20 03:04:59,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:59,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:59,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160603983] [2020-10-20 03:04:59,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:59,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:59,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:59,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:59,458 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 5 states. [2020-10-20 03:04:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:59,490 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-10-20 03:04:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:04:59,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:04:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:59,491 INFO L225 Difference]: With dead ends: 53 [2020-10-20 03:04:59,491 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 03:04:59,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 03:04:59,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 03:04:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 03:04:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 03:04:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-10-20 03:04:59,495 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-10-20 03:04:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:59,496 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-10-20 03:04:59,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-10-20 03:04:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:59,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:59,497 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 03:04:59,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 03:04:59,497 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:59,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:59,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1333208262, now seen corresponding path program 3 times [2020-10-20 03:04:59,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:59,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182492752] [2020-10-20 03:04:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:59,559 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 03:04:59,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182492752] [2020-10-20 03:04:59,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:59,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:59,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108567919] [2020-10-20 03:04:59,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:59,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:59,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:59,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:59,562 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-10-20 03:04:59,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:59,585 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-10-20 03:04:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:59,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:04:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:59,585 INFO L225 Difference]: With dead ends: 30 [2020-10-20 03:04:59,585 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:04:59,586 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 03:04:59,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:04:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:04:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:04:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:04:59,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:04:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:59,587 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:04:59,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:59,587 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:04:59,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:04:59,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 03:04:59,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:04:59 BasicIcfg [2020-10-20 03:04:59,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:04:59,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:04:59,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:04:59,593 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:04:59,593 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:55" (3/4) ... [2020-10-20 03:04:59,597 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:04:59,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:04:59,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:04:59,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:04:59,612 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:04:59,613 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:04:59,613 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:59,613 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:59,662 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:04:59,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:04:59,664 INFO L168 Benchmark]: Toolchain (without parser) took 5866.55 ms. Allocated memory was 37.2 MB in the beginning and 83.9 MB in the end (delta: 46.7 MB). Free memory was 15.9 MB in the beginning and 29.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:59,665 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 65.7 kB). Peak memory consumption was 65.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:04:59,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.64 ms. Allocated memory was 37.2 MB in the beginning and 46.7 MB in the end (delta: 9.4 MB). Free memory was 15.0 MB in the beginning and 18.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:59,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.74 ms. Allocated memory is still 46.7 MB. Free memory was 18.2 MB in the beginning and 16.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:59,670 INFO L168 Benchmark]: Boogie Preprocessor took 26.99 ms. Allocated memory is still 46.7 MB. Free memory was 16.1 MB in the beginning and 14.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:59,671 INFO L168 Benchmark]: RCFGBuilder took 504.39 ms. Allocated memory was 46.7 MB in the beginning and 50.3 MB in the end (delta: 3.7 MB). Free memory was 14.5 MB in the beginning and 28.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:59,672 INFO L168 Benchmark]: TraceAbstraction took 4547.58 ms. Allocated memory was 50.3 MB in the beginning and 83.9 MB in the end (delta: 33.6 MB). Free memory was 27.3 MB in the beginning and 32.1 MB in the end (delta: -4.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:59,672 INFO L168 Benchmark]: Witness Printer took 70.15 ms. Allocated memory is still 83.9 MB. Free memory was 32.1 MB in the beginning and 29.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:59,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 65.7 kB). Peak memory consumption was 65.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 656.64 ms. Allocated memory was 37.2 MB in the beginning and 46.7 MB in the end (delta: 9.4 MB). Free memory was 15.0 MB in the beginning and 18.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.74 ms. Allocated memory is still 46.7 MB. Free memory was 18.2 MB in the beginning and 16.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.99 ms. Allocated memory is still 46.7 MB. Free memory was 16.1 MB in the beginning and 14.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 504.39 ms. Allocated memory was 46.7 MB in the beginning and 50.3 MB in the end (delta: 3.7 MB). Free memory was 14.5 MB in the beginning and 28.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4547.58 ms. Allocated memory was 50.3 MB in the beginning and 83.9 MB in the end (delta: 33.6 MB). Free memory was 27.3 MB in the beginning and 32.1 MB in the end (delta: -4.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 14.3 GB. * Witness Printer took 70.15 ms. Allocated memory is still 83.9 MB. Free memory was 32.1 MB in the beginning and 29.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 962 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 66 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 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: 4.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 228 SDtfs, 325 SDslu, 408 SDs, 0 SdLazy, 222 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s 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, 12 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 6560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...