./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/15_dekker.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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-ext/15_dekker.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 316c62654735ab7f9412d0ff424f710640d92e79 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 20:20:10,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 20:20:10,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 20:20:10,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 20:20:10,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 20:20:10,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 20:20:10,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 20:20:10,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 20:20:10,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 20:20:10,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 20:20:10,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 20:20:10,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 20:20:10,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 20:20:10,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 20:20:10,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 20:20:10,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 20:20:10,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 20:20:10,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 20:20:10,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 20:20:10,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 20:20:10,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 20:20:10,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 20:20:10,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 20:20:10,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 20:20:10,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 20:20:10,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 20:20:10,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 20:20:10,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 20:20:10,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 20:20:10,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 20:20:10,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 20:20:10,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 20:20:10,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 20:20:10,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 20:20:10,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 20:20:10,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 20:20:10,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 20:20:10,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 20:20:10,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 20:20:10,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 20:20:10,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 20:20:10,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 20:20:10,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 20:20:10,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 20:20:10,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 20:20:10,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 20:20:10,570 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 20:20:10,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 20:20:10,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 20:20:10,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 20:20:10,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 20:20:10,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 20:20:10,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 20:20:10,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 20:20:10,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 20:20:10,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 20:20:10,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 20:20:10,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 20:20:10,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 20:20:10,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 20:20:10,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 20:20:10,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 20:20:10,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 20:20:10,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 20:20:10,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 20:20:10,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 20:20:10,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 20:20:10,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 20:20:10,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 20:20:10,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 20:20:10,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 20:20:10,577 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(__VERIFIER_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 -> 316c62654735ab7f9412d0ff424f710640d92e79 [2020-07-28 20:20:10,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 20:20:10,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 20:20:10,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 20:20:10,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 20:20:10,900 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 20:20:10,901 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/15_dekker.i [2020-07-28 20:20:10,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2891190d7/3b1146a46f994a5ca300221e3b7ccc81/FLAG9bf47fd96 [2020-07-28 20:20:11,527 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 20:20:11,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/15_dekker.i [2020-07-28 20:20:11,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2891190d7/3b1146a46f994a5ca300221e3b7ccc81/FLAG9bf47fd96 [2020-07-28 20:20:11,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2891190d7/3b1146a46f994a5ca300221e3b7ccc81 [2020-07-28 20:20:11,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 20:20:11,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 20:20:11,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 20:20:11,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 20:20:11,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 20:20:11,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 08:20:11" (1/1) ... [2020-07-28 20:20:11,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65311a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:11, skipping insertion in model container [2020-07-28 20:20:11,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 08:20:11" (1/1) ... [2020-07-28 20:20:11,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 20:20:11,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 20:20:12,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 20:20:12,272 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 20:20:12,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 20:20:12,395 INFO L208 MainTranslator]: Completed translation [2020-07-28 20:20:12,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12 WrapperNode [2020-07-28 20:20:12,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 20:20:12,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 20:20:12,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 20:20:12,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 20:20:12,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 20:20:12,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 20:20:12,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 20:20:12,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 20:20:12,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (1/1) ... [2020-07-28 20:20:12,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 20:20:12,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 20:20:12,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 20:20:12,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 20:20:12,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (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 [2020-07-28 20:20:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-07-28 20:20:12,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-07-28 20:20:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 20:20:12,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 20:20:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 20:20:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 20:20:12,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 20:20:12,569 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-07-28 20:20:13,092 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 20:20:13,093 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-07-28 20:20:13,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 08:20:13 BoogieIcfgContainer [2020-07-28 20:20:13,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 20:20:13,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 20:20:13,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 20:20:13,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 20:20:13,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 08:20:11" (1/3) ... [2020-07-28 20:20:13,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700ce590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 08:20:13, skipping insertion in model container [2020-07-28 20:20:13,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:20:12" (2/3) ... [2020-07-28 20:20:13,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700ce590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 08:20:13, skipping insertion in model container [2020-07-28 20:20:13,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 08:20:13" (3/3) ... [2020-07-28 20:20:13,107 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-07-28 20:20:13,118 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-07-28 20:20:13,118 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 20:20:13,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-28 20:20:13,127 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-07-28 20:20:13,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:20:13,186 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-28 20:20:13,207 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 20:20:13,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 20:20:13,208 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 20:20:13,208 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 20:20:13,208 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 20:20:13,208 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 20:20:13,208 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 20:20:13,209 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 20:20:13,224 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 65 transitions, 135 flow [2020-07-28 20:20:13,226 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions, 135 flow [2020-07-28 20:20:13,267 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2020-07-28 20:20:13,268 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-07-28 20:20:13,274 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-07-28 20:20:13,277 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions, 135 flow [2020-07-28 20:20:13,295 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2020-07-28 20:20:13,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-07-28 20:20:13,296 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-07-28 20:20:13,299 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1302 [2020-07-28 20:20:13,301 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-07-28 20:20:14,888 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2818 [2020-07-28 20:20:14,889 INFO L214 etLargeBlockEncoding]: Total number of compositions: 41 [2020-07-28 20:20:14,893 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 33 transitions, 71 flow [2020-07-28 20:20:14,908 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 123 states. [2020-07-28 20:20:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-07-28 20:20:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 20:20:14,919 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:20:14,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 20:20:14,924 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:20:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:20:14,930 INFO L82 PathProgramCache]: Analyzing trace with hash 265919371, now seen corresponding path program 1 times [2020-07-28 20:20:14,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:20:14,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637295713] [2020-07-28 20:20:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:20:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:20:15,109 INFO L280 TraceCheckUtils]: 0: Hoare triple {306#true} [250] ULTIMATE.startENTRY-->L709: Formula: (let ((.cse0 (store |v_#valid_25| 0 0))) (and (= 0 v_~flag1~0_82) (= 0 v_~x~0_49) (= (store |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17| (store (select |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17|) |v_ULTIMATE.start_main_~#t~0.offset_13| 0)) |v_#memory_int_7|) (= |v_#valid_23| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_17| 1)) (= (store |v_#length_8| |v_ULTIMATE.start_main_~#t~0.base_17| 4) |v_#length_7|) (= |v_ULTIMATE.start_main_~#t~0.offset_13| 0) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_17|)) (= 0 v_~turn~0_137) (= 0 v_~flag2~0_62) (= 0 |v_#NULL.offset_4|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t~0.base_17|) (< 0 |v_#StackHeapBarrier_9|) (= 0 |v_#NULL.base_4|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_25|, #memory_int=|v_#memory_int_8|, #length=|v_#length_8|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, #NULL.offset=|v_#NULL.offset_4|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_13|, #NULL.base=|v_#NULL.base_4|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_11|, ~flag2~0=v_~flag2~0_62, #valid=|v_#valid_23|, ULTIMATE.start_main_#t~ret3.offset=|v_ULTIMATE.start_main_#t~ret3.offset_16|, #memory_int=|v_#memory_int_7|, ULTIMATE.start_main_#t~ret3.base=|v_ULTIMATE.start_main_#t~ret3.base_16|, ~flag1~0=v_~flag1~0_82, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_17|, #length=|v_#length_7|, ~turn~0=v_~turn~0_137, ~x~0=v_~x~0_49} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, ULTIMATE.start_main_#t~ret3.offset, #memory_int, ULTIMATE.start_main_#t~ret3.base, ~flag1~0, ULTIMATE.start_main_~#t~0.base, #length, ~turn~0, ~x~0] {306#true} is VALID [2020-07-28 20:20:15,110 INFO L280 TraceCheckUtils]: 1: Hoare triple {306#true} [207] L709-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~arg.base_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2) (= |v_thr1Thread1of1ForFork0_#in~arg.offset_3| 0)) InVars {} OutVars{thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_3|, thr1Thread1of1ForFork0_~arg.offset=v_thr1Thread1of1ForFork0_~arg.offset_3, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_~arg.base=v_thr1Thread1of1ForFork0_~arg.base_3, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_#in~arg.offset, thr1Thread1of1ForFork0_~arg.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_~arg.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~arg.base, thr1Thread1of1ForFork0_#res.offset] {306#true} is VALID [2020-07-28 20:20:15,110 INFO L280 TraceCheckUtils]: 2: Hoare triple {306#true} [246] L709-1-->L694-2: Formula: (and (= v_ULTIMATE.start_thr2_~arg.offset_9 |v_ULTIMATE.start_thr2_#in~arg.offset_8|) (= |v_ULTIMATE.start_thr2_#in~arg.base_8| v_ULTIMATE.start_thr2_~arg.base_9) (= 0 |v_ULTIMATE.start_thr2_#in~arg.offset_8|) (= 0 |v_ULTIMATE.start_thr2_#in~arg.base_8|) (= 1 v_~flag2~0_53)) InVars {} OutVars{ULTIMATE.start_thr2_#res.base=|v_ULTIMATE.start_thr2_#res.base_15|, ~flag2~0=v_~flag2~0_53, ULTIMATE.start_thr2_~arg.base=v_ULTIMATE.start_thr2_~arg.base_9, ULTIMATE.start_thr2_#in~arg.offset=|v_ULTIMATE.start_thr2_#in~arg.offset_8|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_thr2_~arg.offset=v_ULTIMATE.start_thr2_~arg.offset_9, ULTIMATE.start_thr2_#res.offset=|v_ULTIMATE.start_thr2_#res.offset_15|, ULTIMATE.start_thr2_#in~arg.base=|v_ULTIMATE.start_thr2_#in~arg.base_8|} AuxVars[] AssignedVars[ULTIMATE.start_thr2_#res.base, ~flag2~0, ULTIMATE.start_thr2_~arg.base, ULTIMATE.start_thr2_#in~arg.offset, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_thr2_~arg.offset, ULTIMATE.start_thr2_#res.offset, ULTIMATE.start_thr2_#in~arg.base] {306#true} is VALID [2020-07-28 20:20:15,111 INFO L280 TraceCheckUtils]: 3: Hoare triple {306#true} [213] L694-2-->L701: Formula: false InVars {} OutVars{~x~0=v_~x~0_11} AuxVars[] AssignedVars[~x~0] {307#false} is VALID [2020-07-28 20:20:15,112 INFO L280 TraceCheckUtils]: 4: Hoare triple {307#false} [224] L701-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= 1 v_~x~0_24)) InVars {~x~0=v_~x~0_24} OutVars{~x~0=v_~x~0_24} AuxVars[] AssignedVars[] {307#false} is VALID [2020-07-28 20:20:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 20:20:15,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637295713] [2020-07-28 20:20:15,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:20:15,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 20:20:15,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766120568] [2020-07-28 20:20:15,123 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-07-28 20:20:15,125 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:20:15,129 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 20:20:15,148 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:15,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 20:20:15,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:20:15,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 20:20:15,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 20:20:15,160 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 2 states. [2020-07-28 20:20:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:15,232 INFO L93 Difference]: Finished difference Result 123 states and 288 transitions. [2020-07-28 20:20:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 20:20:15,232 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-07-28 20:20:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:20:15,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 20:20:15,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2020-07-28 20:20:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 20:20:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2020-07-28 20:20:15,238 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 32 transitions. [2020-07-28 20:20:15,281 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:15,299 INFO L225 Difference]: With dead ends: 123 [2020-07-28 20:20:15,299 INFO L226 Difference]: Without dead ends: 114 [2020-07-28 20:20:15,301 INFO L675 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 [2020-07-28 20:20:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-28 20:20:15,341 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,343 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,343 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,344 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,344 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,344 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,345 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,345 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,345 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,346 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,346 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,346 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,347 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,347 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,347 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,347 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,348 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,348 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,348 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,349 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,349 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,349 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,350 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,350 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,350 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,350 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,351 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,351 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,351 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,352 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,352 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,352 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,353 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,353 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,353 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,354 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,354 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,354 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,355 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,355 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,355 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,356 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,356 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,356 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,356 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,357 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,357 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,357 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,358 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,358 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,358 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,358 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,359 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,359 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,359 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,360 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,360 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,360 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,361 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,361 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,361 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,361 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,362 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,362 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,362 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,363 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,363 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,363 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,363 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,364 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,364 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,364 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,365 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,365 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,365 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,366 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,366 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,366 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,367 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,367 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,367 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,368 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,368 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,368 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,368 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,369 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,369 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,369 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,370 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,370 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,370 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,371 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,371 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,371 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,371 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,372 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,372 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,372 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,373 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,373 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,373 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,374 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,374 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,374 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,375 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,375 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,375 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,376 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,376 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,376 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,377 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,377 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,377 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,378 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-07-28 20:20:15,379 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:20:15,379 INFO L82 GeneralOperation]: Start isEquivalent. First operand 114 states. Second operand 114 states. [2020-07-28 20:20:15,380 INFO L74 IsIncluded]: Start isIncluded. First operand 114 states. Second operand 114 states. [2020-07-28 20:20:15,380 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 114 states. [2020-07-28 20:20:15,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:15,394 INFO L93 Difference]: Finished difference Result 114 states and 270 transitions. [2020-07-28 20:20:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 270 transitions. [2020-07-28 20:20:15,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:15,396 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:15,397 INFO L74 IsIncluded]: Start isIncluded. First operand 114 states. Second operand 114 states. [2020-07-28 20:20:15,397 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 114 states. [2020-07-28 20:20:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:15,409 INFO L93 Difference]: Finished difference Result 114 states and 270 transitions. [2020-07-28 20:20:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 270 transitions. [2020-07-28 20:20:15,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:15,411 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:15,411 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:20:15,411 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:20:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-28 20:20:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 270 transitions. [2020-07-28 20:20:15,422 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 270 transitions. Word has length 5 [2020-07-28 20:20:15,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:20:15,423 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 270 transitions. [2020-07-28 20:20:15,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 20:20:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 270 transitions. [2020-07-28 20:20:15,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 20:20:15,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:20:15,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 20:20:15,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 20:20:15,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:20:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:20:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash -346472462, now seen corresponding path program 1 times [2020-07-28 20:20:15,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:20:15,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797926892] [2020-07-28 20:20:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:20:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:20:15,571 INFO L280 TraceCheckUtils]: 0: Hoare triple {889#true} [250] ULTIMATE.startENTRY-->L709: Formula: (let ((.cse0 (store |v_#valid_25| 0 0))) (and (= 0 v_~flag1~0_82) (= 0 v_~x~0_49) (= (store |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17| (store (select |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17|) |v_ULTIMATE.start_main_~#t~0.offset_13| 0)) |v_#memory_int_7|) (= |v_#valid_23| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_17| 1)) (= (store |v_#length_8| |v_ULTIMATE.start_main_~#t~0.base_17| 4) |v_#length_7|) (= |v_ULTIMATE.start_main_~#t~0.offset_13| 0) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_17|)) (= 0 v_~turn~0_137) (= 0 v_~flag2~0_62) (= 0 |v_#NULL.offset_4|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t~0.base_17|) (< 0 |v_#StackHeapBarrier_9|) (= 0 |v_#NULL.base_4|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_25|, #memory_int=|v_#memory_int_8|, #length=|v_#length_8|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, #NULL.offset=|v_#NULL.offset_4|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_13|, #NULL.base=|v_#NULL.base_4|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_11|, ~flag2~0=v_~flag2~0_62, #valid=|v_#valid_23|, ULTIMATE.start_main_#t~ret3.offset=|v_ULTIMATE.start_main_#t~ret3.offset_16|, #memory_int=|v_#memory_int_7|, ULTIMATE.start_main_#t~ret3.base=|v_ULTIMATE.start_main_#t~ret3.base_16|, ~flag1~0=v_~flag1~0_82, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_17|, #length=|v_#length_7|, ~turn~0=v_~turn~0_137, ~x~0=v_~x~0_49} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, ULTIMATE.start_main_#t~ret3.offset, #memory_int, ULTIMATE.start_main_#t~ret3.base, ~flag1~0, ULTIMATE.start_main_~#t~0.base, #length, ~turn~0, ~x~0] {889#true} is VALID [2020-07-28 20:20:15,571 INFO L280 TraceCheckUtils]: 1: Hoare triple {889#true} [207] L709-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~arg.base_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2) (= |v_thr1Thread1of1ForFork0_#in~arg.offset_3| 0)) InVars {} OutVars{thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_3|, thr1Thread1of1ForFork0_~arg.offset=v_thr1Thread1of1ForFork0_~arg.offset_3, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_~arg.base=v_thr1Thread1of1ForFork0_~arg.base_3, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_#in~arg.offset, thr1Thread1of1ForFork0_~arg.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_~arg.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~arg.base, thr1Thread1of1ForFork0_#res.offset] {889#true} is VALID [2020-07-28 20:20:15,572 INFO L280 TraceCheckUtils]: 2: Hoare triple {889#true} [246] L709-1-->L694-2: Formula: (and (= v_ULTIMATE.start_thr2_~arg.offset_9 |v_ULTIMATE.start_thr2_#in~arg.offset_8|) (= |v_ULTIMATE.start_thr2_#in~arg.base_8| v_ULTIMATE.start_thr2_~arg.base_9) (= 0 |v_ULTIMATE.start_thr2_#in~arg.offset_8|) (= 0 |v_ULTIMATE.start_thr2_#in~arg.base_8|) (= 1 v_~flag2~0_53)) InVars {} OutVars{ULTIMATE.start_thr2_#res.base=|v_ULTIMATE.start_thr2_#res.base_15|, ~flag2~0=v_~flag2~0_53, ULTIMATE.start_thr2_~arg.base=v_ULTIMATE.start_thr2_~arg.base_9, ULTIMATE.start_thr2_#in~arg.offset=|v_ULTIMATE.start_thr2_#in~arg.offset_8|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_thr2_~arg.offset=v_ULTIMATE.start_thr2_~arg.offset_9, ULTIMATE.start_thr2_#res.offset=|v_ULTIMATE.start_thr2_#res.offset_15|, ULTIMATE.start_thr2_#in~arg.base=|v_ULTIMATE.start_thr2_#in~arg.base_8|} AuxVars[] AssignedVars[ULTIMATE.start_thr2_#res.base, ~flag2~0, ULTIMATE.start_thr2_~arg.base, ULTIMATE.start_thr2_#in~arg.offset, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_thr2_~arg.offset, ULTIMATE.start_thr2_#res.offset, ULTIMATE.start_thr2_#in~arg.base] {889#true} is VALID [2020-07-28 20:20:15,572 INFO L280 TraceCheckUtils]: 3: Hoare triple {889#true} [175] L694-2-->L693-2: Formula: (not (<= 1 v_~flag1~0_5)) InVars {~flag1~0=v_~flag1~0_5} OutVars{~flag1~0=v_~flag1~0_5} AuxVars[] AssignedVars[] {889#true} is VALID [2020-07-28 20:20:15,575 INFO L280 TraceCheckUtils]: 4: Hoare triple {889#true} [157] L693-2-->L701: Formula: (= v_~x~0_4 1) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] {891#(= 1 ~x~0)} is VALID [2020-07-28 20:20:15,576 INFO L280 TraceCheckUtils]: 5: Hoare triple {891#(= 1 ~x~0)} [224] L701-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= 1 v_~x~0_24)) InVars {~x~0=v_~x~0_24} OutVars{~x~0=v_~x~0_24} AuxVars[] AssignedVars[] {890#false} is VALID [2020-07-28 20:20:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 20:20:15,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797926892] [2020-07-28 20:20:15,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:20:15,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 20:20:15,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466283283] [2020-07-28 20:20:15,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-07-28 20:20:15,581 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:20:15,581 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 20:20:15,601 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:15,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 20:20:15,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:20:15,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 20:20:15,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:20:15,602 INFO L87 Difference]: Start difference. First operand 114 states and 270 transitions. Second operand 3 states. [2020-07-28 20:20:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:15,715 INFO L93 Difference]: Finished difference Result 119 states and 267 transitions. [2020-07-28 20:20:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 20:20:15,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-07-28 20:20:15,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:20:15,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:20:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2020-07-28 20:20:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:20:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2020-07-28 20:20:15,718 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 45 transitions. [2020-07-28 20:20:15,766 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:15,769 INFO L225 Difference]: With dead ends: 119 [2020-07-28 20:20:15,770 INFO L226 Difference]: Without dead ends: 98 [2020-07-28 20:20:15,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:20:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-28 20:20:15,778 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,779 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,779 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,779 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,779 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,779 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,780 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,780 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,780 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,780 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,781 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,781 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,781 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,781 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,781 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,782 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,782 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,782 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,782 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,783 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,783 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,783 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,783 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,784 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,784 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,784 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,784 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,784 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,785 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,785 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,785 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,785 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,785 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,786 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,786 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,786 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,786 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,787 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,787 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,787 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,787 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,787 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,788 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,788 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,788 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,788 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,788 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,789 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,789 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,789 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,789 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,790 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,790 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,790 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,790 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,790 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,791 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,791 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,791 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,791 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,792 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,792 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,792 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,792 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,792 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,793 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,793 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,793 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,793 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,793 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,794 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,794 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,794 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,794 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,795 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,795 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,795 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,795 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,795 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,796 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,796 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,796 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,796 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,797 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,797 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,797 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,797 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,797 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,798 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,798 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,798 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,799 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-07-28 20:20:15,799 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:20:15,799 INFO L82 GeneralOperation]: Start isEquivalent. First operand 98 states. Second operand 92 states. [2020-07-28 20:20:15,800 INFO L74 IsIncluded]: Start isIncluded. First operand 98 states. Second operand 92 states. [2020-07-28 20:20:15,800 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 92 states. [2020-07-28 20:20:15,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:15,806 INFO L93 Difference]: Finished difference Result 98 states and 220 transitions. [2020-07-28 20:20:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 220 transitions. [2020-07-28 20:20:15,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:15,807 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:15,808 INFO L74 IsIncluded]: Start isIncluded. First operand 92 states. Second operand 98 states. [2020-07-28 20:20:15,808 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 98 states. [2020-07-28 20:20:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:15,815 INFO L93 Difference]: Finished difference Result 98 states and 220 transitions. [2020-07-28 20:20:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 220 transitions. [2020-07-28 20:20:15,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:15,816 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:15,816 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:20:15,816 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:20:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-28 20:20:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 213 transitions. [2020-07-28 20:20:15,822 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 213 transitions. Word has length 6 [2020-07-28 20:20:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:20:15,823 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 213 transitions. [2020-07-28 20:20:15,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 20:20:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 213 transitions. [2020-07-28 20:20:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 20:20:15,823 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:20:15,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 20:20:15,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 20:20:15,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:20:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:20:15,824 INFO L82 PathProgramCache]: Analyzing trace with hash -347203723, now seen corresponding path program 1 times [2020-07-28 20:20:15,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:20:15,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354661594] [2020-07-28 20:20:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:20:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:20:15,863 INFO L280 TraceCheckUtils]: 0: Hoare triple {1393#true} [250] ULTIMATE.startENTRY-->L709: Formula: (let ((.cse0 (store |v_#valid_25| 0 0))) (and (= 0 v_~flag1~0_82) (= 0 v_~x~0_49) (= (store |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17| (store (select |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17|) |v_ULTIMATE.start_main_~#t~0.offset_13| 0)) |v_#memory_int_7|) (= |v_#valid_23| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_17| 1)) (= (store |v_#length_8| |v_ULTIMATE.start_main_~#t~0.base_17| 4) |v_#length_7|) (= |v_ULTIMATE.start_main_~#t~0.offset_13| 0) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_17|)) (= 0 v_~turn~0_137) (= 0 v_~flag2~0_62) (= 0 |v_#NULL.offset_4|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t~0.base_17|) (< 0 |v_#StackHeapBarrier_9|) (= 0 |v_#NULL.base_4|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_25|, #memory_int=|v_#memory_int_8|, #length=|v_#length_8|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, #NULL.offset=|v_#NULL.offset_4|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_13|, #NULL.base=|v_#NULL.base_4|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_11|, ~flag2~0=v_~flag2~0_62, #valid=|v_#valid_23|, ULTIMATE.start_main_#t~ret3.offset=|v_ULTIMATE.start_main_#t~ret3.offset_16|, #memory_int=|v_#memory_int_7|, ULTIMATE.start_main_#t~ret3.base=|v_ULTIMATE.start_main_#t~ret3.base_16|, ~flag1~0=v_~flag1~0_82, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_17|, #length=|v_#length_7|, ~turn~0=v_~turn~0_137, ~x~0=v_~x~0_49} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, ULTIMATE.start_main_#t~ret3.offset, #memory_int, ULTIMATE.start_main_#t~ret3.base, ~flag1~0, ULTIMATE.start_main_~#t~0.base, #length, ~turn~0, ~x~0] {1393#true} is VALID [2020-07-28 20:20:15,863 INFO L280 TraceCheckUtils]: 1: Hoare triple {1393#true} [207] L709-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~arg.base_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2) (= |v_thr1Thread1of1ForFork0_#in~arg.offset_3| 0)) InVars {} OutVars{thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_3|, thr1Thread1of1ForFork0_~arg.offset=v_thr1Thread1of1ForFork0_~arg.offset_3, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_~arg.base=v_thr1Thread1of1ForFork0_~arg.base_3, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_#in~arg.offset, thr1Thread1of1ForFork0_~arg.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_~arg.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~arg.base, thr1Thread1of1ForFork0_#res.offset] {1393#true} is VALID [2020-07-28 20:20:15,864 INFO L280 TraceCheckUtils]: 2: Hoare triple {1393#true} [221] thr1ENTRY-->L679-2: Formula: (and (= v_thr1Thread1of1ForFork0_~arg.base_4 |v_thr1Thread1of1ForFork0_#in~arg.base_4|) (= |v_thr1Thread1of1ForFork0_#in~arg.offset_4| v_thr1Thread1of1ForFork0_~arg.offset_4) (= 1 v_~flag1~0_19)) InVars {thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_4|, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_4|} OutVars{thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_4|, thr1Thread1of1ForFork0_~arg.offset=v_thr1Thread1of1ForFork0_~arg.offset_4, thr1Thread1of1ForFork0_~arg.base=v_thr1Thread1of1ForFork0_~arg.base_4, ~flag1~0=v_~flag1~0_19, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~arg.offset, thr1Thread1of1ForFork0_~arg.base, ~flag1~0] {1393#true} is VALID [2020-07-28 20:20:15,864 INFO L280 TraceCheckUtils]: 3: Hoare triple {1393#true} [188] L679-2-->L678-2: Formula: (not (<= 1 v_~flag2~0_1)) InVars {~flag2~0=v_~flag2~0_1} OutVars{~flag2~0=v_~flag2~0_1} AuxVars[] AssignedVars[] {1393#true} is VALID [2020-07-28 20:20:15,865 INFO L280 TraceCheckUtils]: 4: Hoare triple {1393#true} [190] L678-2-->L686: Formula: (= v_~x~0_1 0) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] {1395#(= 0 ~x~0)} is VALID [2020-07-28 20:20:15,865 INFO L280 TraceCheckUtils]: 5: Hoare triple {1395#(= 0 ~x~0)} [222] L686-->thr1Err0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= v_~x~0_20 0)) InVars {~x~0=v_~x~0_20} OutVars{~x~0=v_~x~0_20} AuxVars[] AssignedVars[] {1394#false} is VALID [2020-07-28 20:20:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 20:20:15,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354661594] [2020-07-28 20:20:15,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:20:15,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 20:20:15,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655048163] [2020-07-28 20:20:15,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-07-28 20:20:15,867 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:20:15,867 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 20:20:15,874 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:15,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 20:20:15,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:20:15,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 20:20:15,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:20:15,875 INFO L87 Difference]: Start difference. First operand 92 states and 213 transitions. Second operand 3 states. [2020-07-28 20:20:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:15,927 INFO L93 Difference]: Finished difference Result 87 states and 195 transitions. [2020-07-28 20:20:15,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 20:20:15,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-07-28 20:20:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:20:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:20:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-07-28 20:20:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:20:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-07-28 20:20:15,929 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 41 transitions. [2020-07-28 20:20:15,972 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:15,974 INFO L225 Difference]: With dead ends: 87 [2020-07-28 20:20:15,974 INFO L226 Difference]: Without dead ends: 66 [2020-07-28 20:20:15,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:20:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-28 20:20:15,979 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,979 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,979 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,979 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,980 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,980 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,980 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,980 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,980 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,981 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,981 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,981 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,981 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,981 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,982 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,982 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,982 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,982 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,983 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,983 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,983 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,983 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,983 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,984 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,984 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,984 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,984 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,984 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,985 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,985 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,985 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,985 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,985 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,986 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,986 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,986 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,986 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,987 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,987 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,987 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,987 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,987 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,988 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,988 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,988 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,988 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,988 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,989 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,989 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,989 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,989 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,990 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,990 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,990 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,990 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,991 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,991 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,991 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,991 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,992 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,992 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,992 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,992 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,992 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,993 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,993 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:15,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-07-28 20:20:15,993 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:20:15,994 INFO L82 GeneralOperation]: Start isEquivalent. First operand 66 states. Second operand 66 states. [2020-07-28 20:20:15,994 INFO L74 IsIncluded]: Start isIncluded. First operand 66 states. Second operand 66 states. [2020-07-28 20:20:15,994 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 66 states. [2020-07-28 20:20:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:15,998 INFO L93 Difference]: Finished difference Result 66 states and 148 transitions. [2020-07-28 20:20:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 148 transitions. [2020-07-28 20:20:15,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:15,999 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:15,999 INFO L74 IsIncluded]: Start isIncluded. First operand 66 states. Second operand 66 states. [2020-07-28 20:20:15,999 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 66 states. [2020-07-28 20:20:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:16,004 INFO L93 Difference]: Finished difference Result 66 states and 148 transitions. [2020-07-28 20:20:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 148 transitions. [2020-07-28 20:20:16,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:16,004 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:16,004 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:20:16,005 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:20:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-28 20:20:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 148 transitions. [2020-07-28 20:20:16,008 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 148 transitions. Word has length 6 [2020-07-28 20:20:16,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:20:16,008 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 148 transitions. [2020-07-28 20:20:16,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 20:20:16,009 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 148 transitions. [2020-07-28 20:20:16,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 20:20:16,009 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:20:16,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 20:20:16,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 20:20:16,010 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:20:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:20:16,010 INFO L82 PathProgramCache]: Analyzing trace with hash 390027313, now seen corresponding path program 1 times [2020-07-28 20:20:16,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:20:16,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238348635] [2020-07-28 20:20:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:20:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:20:16,056 INFO L280 TraceCheckUtils]: 0: Hoare triple {1749#true} [250] ULTIMATE.startENTRY-->L709: Formula: (let ((.cse0 (store |v_#valid_25| 0 0))) (and (= 0 v_~flag1~0_82) (= 0 v_~x~0_49) (= (store |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17| (store (select |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17|) |v_ULTIMATE.start_main_~#t~0.offset_13| 0)) |v_#memory_int_7|) (= |v_#valid_23| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_17| 1)) (= (store |v_#length_8| |v_ULTIMATE.start_main_~#t~0.base_17| 4) |v_#length_7|) (= |v_ULTIMATE.start_main_~#t~0.offset_13| 0) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_17|)) (= 0 v_~turn~0_137) (= 0 v_~flag2~0_62) (= 0 |v_#NULL.offset_4|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t~0.base_17|) (< 0 |v_#StackHeapBarrier_9|) (= 0 |v_#NULL.base_4|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_25|, #memory_int=|v_#memory_int_8|, #length=|v_#length_8|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, #NULL.offset=|v_#NULL.offset_4|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_13|, #NULL.base=|v_#NULL.base_4|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_11|, ~flag2~0=v_~flag2~0_62, #valid=|v_#valid_23|, ULTIMATE.start_main_#t~ret3.offset=|v_ULTIMATE.start_main_#t~ret3.offset_16|, #memory_int=|v_#memory_int_7|, ULTIMATE.start_main_#t~ret3.base=|v_ULTIMATE.start_main_#t~ret3.base_16|, ~flag1~0=v_~flag1~0_82, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_17|, #length=|v_#length_7|, ~turn~0=v_~turn~0_137, ~x~0=v_~x~0_49} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, ULTIMATE.start_main_#t~ret3.offset, #memory_int, ULTIMATE.start_main_#t~ret3.base, ~flag1~0, ULTIMATE.start_main_~#t~0.base, #length, ~turn~0, ~x~0] {1749#true} is VALID [2020-07-28 20:20:16,056 INFO L280 TraceCheckUtils]: 1: Hoare triple {1749#true} [207] L709-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~arg.base_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2) (= |v_thr1Thread1of1ForFork0_#in~arg.offset_3| 0)) InVars {} OutVars{thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_3|, thr1Thread1of1ForFork0_~arg.offset=v_thr1Thread1of1ForFork0_~arg.offset_3, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_~arg.base=v_thr1Thread1of1ForFork0_~arg.base_3, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_#in~arg.offset, thr1Thread1of1ForFork0_~arg.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_~arg.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~arg.base, thr1Thread1of1ForFork0_#res.offset] {1749#true} is VALID [2020-07-28 20:20:16,057 INFO L280 TraceCheckUtils]: 2: Hoare triple {1749#true} [246] L709-1-->L694-2: Formula: (and (= v_ULTIMATE.start_thr2_~arg.offset_9 |v_ULTIMATE.start_thr2_#in~arg.offset_8|) (= |v_ULTIMATE.start_thr2_#in~arg.base_8| v_ULTIMATE.start_thr2_~arg.base_9) (= 0 |v_ULTIMATE.start_thr2_#in~arg.offset_8|) (= 0 |v_ULTIMATE.start_thr2_#in~arg.base_8|) (= 1 v_~flag2~0_53)) InVars {} OutVars{ULTIMATE.start_thr2_#res.base=|v_ULTIMATE.start_thr2_#res.base_15|, ~flag2~0=v_~flag2~0_53, ULTIMATE.start_thr2_~arg.base=v_ULTIMATE.start_thr2_~arg.base_9, ULTIMATE.start_thr2_#in~arg.offset=|v_ULTIMATE.start_thr2_#in~arg.offset_8|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_thr2_~arg.offset=v_ULTIMATE.start_thr2_~arg.offset_9, ULTIMATE.start_thr2_#res.offset=|v_ULTIMATE.start_thr2_#res.offset_15|, ULTIMATE.start_thr2_#in~arg.base=|v_ULTIMATE.start_thr2_#in~arg.base_8|} AuxVars[] AssignedVars[ULTIMATE.start_thr2_#res.base, ~flag2~0, ULTIMATE.start_thr2_~arg.base, ULTIMATE.start_thr2_#in~arg.offset, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_thr2_~arg.offset, ULTIMATE.start_thr2_#res.offset, ULTIMATE.start_thr2_#in~arg.base] {1751#(= 1 ~flag2~0)} is VALID [2020-07-28 20:20:16,057 INFO L280 TraceCheckUtils]: 3: Hoare triple {1751#(= 1 ~flag2~0)} [221] thr1ENTRY-->L679-2: Formula: (and (= v_thr1Thread1of1ForFork0_~arg.base_4 |v_thr1Thread1of1ForFork0_#in~arg.base_4|) (= |v_thr1Thread1of1ForFork0_#in~arg.offset_4| v_thr1Thread1of1ForFork0_~arg.offset_4) (= 1 v_~flag1~0_19)) InVars {thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_4|, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_4|} OutVars{thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_4|, thr1Thread1of1ForFork0_~arg.offset=v_thr1Thread1of1ForFork0_~arg.offset_4, thr1Thread1of1ForFork0_~arg.base=v_thr1Thread1of1ForFork0_~arg.base_4, ~flag1~0=v_~flag1~0_19, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~arg.offset, thr1Thread1of1ForFork0_~arg.base, ~flag1~0] {1751#(= 1 ~flag2~0)} is VALID [2020-07-28 20:20:16,058 INFO L280 TraceCheckUtils]: 4: Hoare triple {1751#(= 1 ~flag2~0)} [188] L679-2-->L678-2: Formula: (not (<= 1 v_~flag2~0_1)) InVars {~flag2~0=v_~flag2~0_1} OutVars{~flag2~0=v_~flag2~0_1} AuxVars[] AssignedVars[] {1750#false} is VALID [2020-07-28 20:20:16,058 INFO L280 TraceCheckUtils]: 5: Hoare triple {1750#false} [190] L678-2-->L686: Formula: (= v_~x~0_1 0) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] {1750#false} is VALID [2020-07-28 20:20:16,059 INFO L280 TraceCheckUtils]: 6: Hoare triple {1750#false} [175] L694-2-->L693-2: Formula: (not (<= 1 v_~flag1~0_5)) InVars {~flag1~0=v_~flag1~0_5} OutVars{~flag1~0=v_~flag1~0_5} AuxVars[] AssignedVars[] {1750#false} is VALID [2020-07-28 20:20:16,059 INFO L280 TraceCheckUtils]: 7: Hoare triple {1750#false} [157] L693-2-->L701: Formula: (= v_~x~0_4 1) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] {1750#false} is VALID [2020-07-28 20:20:16,060 INFO L280 TraceCheckUtils]: 8: Hoare triple {1750#false} [222] L686-->thr1Err0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= v_~x~0_20 0)) InVars {~x~0=v_~x~0_20} OutVars{~x~0=v_~x~0_20} AuxVars[] AssignedVars[] {1750#false} is VALID [2020-07-28 20:20:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 20:20:16,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238348635] [2020-07-28 20:20:16,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:20:16,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 20:20:16,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679583090] [2020-07-28 20:20:16,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-07-28 20:20:16,063 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:20:16,063 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 20:20:16,073 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:16,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 20:20:16,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:20:16,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 20:20:16,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:20:16,074 INFO L87 Difference]: Start difference. First operand 66 states and 148 transitions. Second operand 3 states. [2020-07-28 20:20:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:16,147 INFO L93 Difference]: Finished difference Result 66 states and 143 transitions. [2020-07-28 20:20:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 20:20:16,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-07-28 20:20:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:20:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:20:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-07-28 20:20:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:20:16,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-07-28 20:20:16,150 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 38 transitions. [2020-07-28 20:20:16,187 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:16,189 INFO L225 Difference]: With dead ends: 66 [2020-07-28 20:20:16,189 INFO L226 Difference]: Without dead ends: 56 [2020-07-28 20:20:16,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:20:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-28 20:20:16,194 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,194 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,194 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,195 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,195 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,195 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,195 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,196 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,196 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,196 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,197 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,197 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,197 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,197 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,198 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,198 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,198 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,198 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,199 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,199 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,199 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,199 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,200 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,200 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,200 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,200 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,201 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,201 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,201 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,202 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,202 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,202 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,202 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,203 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,203 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,203 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,203 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,204 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,204 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,204 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,204 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,205 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,205 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,205 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,206 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,206 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,206 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,206 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,207 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,207 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,207 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,207 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,208 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,208 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,208 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,209 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:20:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-28 20:20:16,209 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:20:16,209 INFO L82 GeneralOperation]: Start isEquivalent. First operand 56 states. Second operand 56 states. [2020-07-28 20:20:16,210 INFO L74 IsIncluded]: Start isIncluded. First operand 56 states. Second operand 56 states. [2020-07-28 20:20:16,210 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 56 states. [2020-07-28 20:20:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:16,213 INFO L93 Difference]: Finished difference Result 56 states and 119 transitions. [2020-07-28 20:20:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2020-07-28 20:20:16,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:16,214 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:16,214 INFO L74 IsIncluded]: Start isIncluded. First operand 56 states. Second operand 56 states. [2020-07-28 20:20:16,214 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 56 states. [2020-07-28 20:20:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:16,217 INFO L93 Difference]: Finished difference Result 56 states and 119 transitions. [2020-07-28 20:20:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2020-07-28 20:20:16,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:16,218 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:16,218 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:20:16,219 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:20:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-28 20:20:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 119 transitions. [2020-07-28 20:20:16,222 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 119 transitions. Word has length 9 [2020-07-28 20:20:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:20:16,222 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 119 transitions. [2020-07-28 20:20:16,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 20:20:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2020-07-28 20:20:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 20:20:16,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:20:16,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 20:20:16,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-28 20:20:16,224 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:20:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:20:16,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1213925997, now seen corresponding path program 2 times [2020-07-28 20:20:16,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:20:16,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490709964] [2020-07-28 20:20:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:20:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:20:16,322 INFO L280 TraceCheckUtils]: 0: Hoare triple {2044#true} [250] ULTIMATE.startENTRY-->L709: Formula: (let ((.cse0 (store |v_#valid_25| 0 0))) (and (= 0 v_~flag1~0_82) (= 0 v_~x~0_49) (= (store |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17| (store (select |v_#memory_int_8| |v_ULTIMATE.start_main_~#t~0.base_17|) |v_ULTIMATE.start_main_~#t~0.offset_13| 0)) |v_#memory_int_7|) (= |v_#valid_23| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_17| 1)) (= (store |v_#length_8| |v_ULTIMATE.start_main_~#t~0.base_17| 4) |v_#length_7|) (= |v_ULTIMATE.start_main_~#t~0.offset_13| 0) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_17|)) (= 0 v_~turn~0_137) (= 0 v_~flag2~0_62) (= 0 |v_#NULL.offset_4|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t~0.base_17|) (< 0 |v_#StackHeapBarrier_9|) (= 0 |v_#NULL.base_4|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_25|, #memory_int=|v_#memory_int_8|, #length=|v_#length_8|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, #NULL.offset=|v_#NULL.offset_4|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_13|, #NULL.base=|v_#NULL.base_4|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_11|, ~flag2~0=v_~flag2~0_62, #valid=|v_#valid_23|, ULTIMATE.start_main_#t~ret3.offset=|v_ULTIMATE.start_main_#t~ret3.offset_16|, #memory_int=|v_#memory_int_7|, ULTIMATE.start_main_#t~ret3.base=|v_ULTIMATE.start_main_#t~ret3.base_16|, ~flag1~0=v_~flag1~0_82, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_17|, #length=|v_#length_7|, ~turn~0=v_~turn~0_137, ~x~0=v_~x~0_49} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, ULTIMATE.start_main_#t~ret3.offset, #memory_int, ULTIMATE.start_main_#t~ret3.base, ~flag1~0, ULTIMATE.start_main_~#t~0.base, #length, ~turn~0, ~x~0] {2044#true} is VALID [2020-07-28 20:20:16,323 INFO L280 TraceCheckUtils]: 1: Hoare triple {2044#true} [207] L709-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~arg.base_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2) (= |v_thr1Thread1of1ForFork0_#in~arg.offset_3| 0)) InVars {} OutVars{thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_3|, thr1Thread1of1ForFork0_~arg.offset=v_thr1Thread1of1ForFork0_~arg.offset_3, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_~arg.base=v_thr1Thread1of1ForFork0_~arg.base_3, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_#in~arg.offset, thr1Thread1of1ForFork0_~arg.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_~arg.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~arg.base, thr1Thread1of1ForFork0_#res.offset] {2044#true} is VALID [2020-07-28 20:20:16,326 INFO L280 TraceCheckUtils]: 2: Hoare triple {2044#true} [221] thr1ENTRY-->L679-2: Formula: (and (= v_thr1Thread1of1ForFork0_~arg.base_4 |v_thr1Thread1of1ForFork0_#in~arg.base_4|) (= |v_thr1Thread1of1ForFork0_#in~arg.offset_4| v_thr1Thread1of1ForFork0_~arg.offset_4) (= 1 v_~flag1~0_19)) InVars {thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_4|, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_4|} OutVars{thr1Thread1of1ForFork0_#in~arg.offset=|v_thr1Thread1of1ForFork0_#in~arg.offset_4|, thr1Thread1of1ForFork0_~arg.offset=v_thr1Thread1of1ForFork0_~arg.offset_4, thr1Thread1of1ForFork0_~arg.base=v_thr1Thread1of1ForFork0_~arg.base_4, ~flag1~0=v_~flag1~0_19, thr1Thread1of1ForFork0_#in~arg.base=|v_thr1Thread1of1ForFork0_#in~arg.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~arg.offset, thr1Thread1of1ForFork0_~arg.base, ~flag1~0] {2046#(= 1 ~flag1~0)} is VALID [2020-07-28 20:20:16,327 INFO L280 TraceCheckUtils]: 3: Hoare triple {2046#(= 1 ~flag1~0)} [188] L679-2-->L678-2: Formula: (not (<= 1 v_~flag2~0_1)) InVars {~flag2~0=v_~flag2~0_1} OutVars{~flag2~0=v_~flag2~0_1} AuxVars[] AssignedVars[] {2046#(= 1 ~flag1~0)} is VALID [2020-07-28 20:20:16,328 INFO L280 TraceCheckUtils]: 4: Hoare triple {2046#(= 1 ~flag1~0)} [246] L709-1-->L694-2: Formula: (and (= v_ULTIMATE.start_thr2_~arg.offset_9 |v_ULTIMATE.start_thr2_#in~arg.offset_8|) (= |v_ULTIMATE.start_thr2_#in~arg.base_8| v_ULTIMATE.start_thr2_~arg.base_9) (= 0 |v_ULTIMATE.start_thr2_#in~arg.offset_8|) (= 0 |v_ULTIMATE.start_thr2_#in~arg.base_8|) (= 1 v_~flag2~0_53)) InVars {} OutVars{ULTIMATE.start_thr2_#res.base=|v_ULTIMATE.start_thr2_#res.base_15|, ~flag2~0=v_~flag2~0_53, ULTIMATE.start_thr2_~arg.base=v_ULTIMATE.start_thr2_~arg.base_9, ULTIMATE.start_thr2_#in~arg.offset=|v_ULTIMATE.start_thr2_#in~arg.offset_8|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_thr2_~arg.offset=v_ULTIMATE.start_thr2_~arg.offset_9, ULTIMATE.start_thr2_#res.offset=|v_ULTIMATE.start_thr2_#res.offset_15|, ULTIMATE.start_thr2_#in~arg.base=|v_ULTIMATE.start_thr2_#in~arg.base_8|} AuxVars[] AssignedVars[ULTIMATE.start_thr2_#res.base, ~flag2~0, ULTIMATE.start_thr2_~arg.base, ULTIMATE.start_thr2_#in~arg.offset, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_thr2_~arg.offset, ULTIMATE.start_thr2_#res.offset, ULTIMATE.start_thr2_#in~arg.base] {2046#(= 1 ~flag1~0)} is VALID [2020-07-28 20:20:16,328 INFO L280 TraceCheckUtils]: 5: Hoare triple {2046#(= 1 ~flag1~0)} [190] L678-2-->L686: Formula: (= v_~x~0_1 0) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] {2046#(= 1 ~flag1~0)} is VALID [2020-07-28 20:20:16,329 INFO L280 TraceCheckUtils]: 6: Hoare triple {2046#(= 1 ~flag1~0)} [175] L694-2-->L693-2: Formula: (not (<= 1 v_~flag1~0_5)) InVars {~flag1~0=v_~flag1~0_5} OutVars{~flag1~0=v_~flag1~0_5} AuxVars[] AssignedVars[] {2045#false} is VALID [2020-07-28 20:20:16,329 INFO L280 TraceCheckUtils]: 7: Hoare triple {2045#false} [157] L693-2-->L701: Formula: (= v_~x~0_4 1) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] {2045#false} is VALID [2020-07-28 20:20:16,330 INFO L280 TraceCheckUtils]: 8: Hoare triple {2045#false} [222] L686-->thr1Err0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= v_~x~0_20 0)) InVars {~x~0=v_~x~0_20} OutVars{~x~0=v_~x~0_20} AuxVars[] AssignedVars[] {2045#false} is VALID [2020-07-28 20:20:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 20:20:16,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490709964] [2020-07-28 20:20:16,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:20:16,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 20:20:16,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033996080] [2020-07-28 20:20:16,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-07-28 20:20:16,332 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:20:16,332 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 20:20:16,344 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:16,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 20:20:16,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:20:16,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 20:20:16,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:20:16,345 INFO L87 Difference]: Start difference. First operand 56 states and 119 transitions. Second operand 3 states. [2020-07-28 20:20:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:16,386 INFO L93 Difference]: Finished difference Result 37 states and 93 transitions. [2020-07-28 20:20:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 20:20:16,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-07-28 20:20:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:20:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:20:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2020-07-28 20:20:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:20:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2020-07-28 20:20:16,388 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 26 transitions. [2020-07-28 20:20:16,423 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:20:16,424 INFO L225 Difference]: With dead ends: 37 [2020-07-28 20:20:16,424 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 20:20:16,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:20:16,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 20:20:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 20:20:16,425 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:20:16,425 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 20:20:16,425 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 20:20:16,425 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 20:20:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:16,426 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 20:20:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 20:20:16,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:16,426 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:16,427 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 20:20:16,427 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 20:20:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:20:16,427 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 20:20:16,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 20:20:16,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:16,427 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:20:16,428 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:20:16,428 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:20:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 20:20:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 20:20:16,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-28 20:20:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:20:16,428 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 20:20:16,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 20:20:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 20:20:16,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:20:16,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-28 20:20:16,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 08:20:16 BasicIcfg [2020-07-28 20:20:16,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 20:20:16,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 20:20:16,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 20:20:16,435 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 20:20:16,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 08:20:13" (3/4) ... [2020-07-28 20:20:16,440 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 20:20:16,447 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-07-28 20:20:16,455 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-07-28 20:20:16,456 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 20:20:16,456 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 20:20:16,522 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 20:20:16,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 20:20:16,529 INFO L168 Benchmark]: Toolchain (without parser) took 4807.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -132.9 MB). Peak memory consumption was 86.2 MB. Max. memory is 11.5 GB. [2020-07-28 20:20:16,530 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 20:20:16,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2020-07-28 20:20:16,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 20:20:16,532 INFO L168 Benchmark]: Boogie Preprocessor took 33.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 20:20:16,537 INFO L168 Benchmark]: RCFGBuilder took 613.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2020-07-28 20:20:16,538 INFO L168 Benchmark]: TraceAbstraction took 3335.49 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 244.0 kB). Peak memory consumption was 73.1 MB. Max. memory is 11.5 GB. [2020-07-28 20:20:16,538 INFO L168 Benchmark]: Witness Printer took 87.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 20:20:16,544 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 675.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 613.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3335.49 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 244.0 kB). Peak memory consumption was 73.1 MB. Max. memory is 11.5 GB. * Witness Printer took 87.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 57 ProgramPointsBefore, 27 ProgramPointsAfterwards, 65 TransitionsBefore, 33 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 35 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 0 MoverChecksTotal, 2818 CheckedPairsTotal, 41 TotalNumberOfCompositions - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 151 SDtfs, 64 SDslu, 48 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred 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: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...