./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/peterson.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-atomic/peterson.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 30b2ae2bbbfcb385de0df7e20f17282d477a17c8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:18:11,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 20:18:11,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 20:18:11,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 20:18:11,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 20:18:11,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 20:18:11,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 20:18:11,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 20:18:11,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 20:18:11,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 20:18:11,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 20:18:11,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 20:18:11,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 20:18:11,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 20:18:11,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 20:18:11,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 20:18:11,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 20:18:11,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 20:18:11,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 20:18:11,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 20:18:11,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 20:18:11,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 20:18:11,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 20:18:11,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 20:18:11,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 20:18:11,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 20:18:11,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 20:18:11,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 20:18:11,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 20:18:11,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 20:18:11,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 20:18:11,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 20:18:11,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 20:18:11,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 20:18:11,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 20:18:11,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 20:18:11,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 20:18:11,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 20:18:11,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 20:18:11,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 20:18:11,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 20:18:11,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 20:18:11,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 20:18:11,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 20:18:11,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 20:18:11,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 20:18:11,724 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 20:18:11,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 20:18:11,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 20:18:11,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 20:18:11,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 20:18:11,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 20:18:11,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 20:18:11,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 20:18:11,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 20:18:11,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 20:18:11,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 20:18:11,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 20:18:11,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 20:18:11,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 20:18:11,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 20:18:11,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 20:18:11,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 20:18:11,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 20:18:11,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 20:18:11,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 20:18:11,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 20:18:11,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 20:18:11,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 20:18:11,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 20:18:11,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 20:18:11,732 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 -> 30b2ae2bbbfcb385de0df7e20f17282d477a17c8 [2020-07-28 20:18:12,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 20:18:12,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 20:18:12,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 20:18:12,128 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 20:18:12,129 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 20:18:12,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/peterson.i [2020-07-28 20:18:12,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60528584/762423e81f524416bed1e84e2c9492ea/FLAGd10a317b9 [2020-07-28 20:18:12,732 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 20:18:12,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i [2020-07-28 20:18:12,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60528584/762423e81f524416bed1e84e2c9492ea/FLAGd10a317b9 [2020-07-28 20:18:13,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60528584/762423e81f524416bed1e84e2c9492ea [2020-07-28 20:18:13,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 20:18:13,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 20:18:13,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 20:18:13,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 20:18:13,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 20:18:13,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ade0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13, skipping insertion in model container [2020-07-28 20:18:13,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 20:18:13,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 20:18:13,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 20:18:13,716 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 20:18:13,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 20:18:13,829 INFO L208 MainTranslator]: Completed translation [2020-07-28 20:18:13,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13 WrapperNode [2020-07-28 20:18:13,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 20:18:13,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 20:18:13,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 20:18:13,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 20:18:13,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 20:18:13,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 20:18:13,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 20:18:13,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 20:18:13,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (1/1) ... [2020-07-28 20:18:13,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 20:18:13,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 20:18:13,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 20:18:13,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 20:18:13,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (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 20:18:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 20:18:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-07-28 20:18:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-07-28 20:18:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-07-28 20:18:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-07-28 20:18:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 20:18:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 20:18:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 20:18:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 20:18:13,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 20:18:13,993 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 20:18:14,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 20:18:14,409 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 20:18:14,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 08:18:14 BoogieIcfgContainer [2020-07-28 20:18:14,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 20:18:14,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 20:18:14,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 20:18:14,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 20:18:14,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 08:18:13" (1/3) ... [2020-07-28 20:18:14,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19128306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 08:18:14, skipping insertion in model container [2020-07-28 20:18:14,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 08:18:13" (2/3) ... [2020-07-28 20:18:14,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19128306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 08:18:14, skipping insertion in model container [2020-07-28 20:18:14,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 08:18:14" (3/3) ... [2020-07-28 20:18:14,421 INFO L109 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-07-28 20:18:14,430 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-07-28 20:18:14,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 20:18:14,436 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-28 20:18:14,437 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-07-28 20:18:14,465 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,466 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,466 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,466 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,468 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,468 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,476 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,486 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 20:18:14,512 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-28 20:18:14,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 20:18:14,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 20:18:14,535 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 20:18:14,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 20:18:14,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 20:18:14,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 20:18:14,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 20:18:14,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 20:18:14,553 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions, 146 flow [2020-07-28 20:18:14,555 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-07-28 20:18:14,594 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-07-28 20:18:14,594 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-07-28 20:18:14,599 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-07-28 20:18:14,602 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-07-28 20:18:14,621 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-07-28 20:18:14,621 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-07-28 20:18:14,622 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-07-28 20:18:14,624 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 756 [2020-07-28 20:18:14,626 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-07-28 20:18:15,802 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-07-28 20:18:15,882 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1396 [2020-07-28 20:18:15,883 INFO L214 etLargeBlockEncoding]: Total number of compositions: 33 [2020-07-28 20:18:15,887 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 34 transitions, 90 flow [2020-07-28 20:18:15,913 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 197 states. [2020-07-28 20:18:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-07-28 20:18:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 20:18:15,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:18:15,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 20:18:15,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:18:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:18:15,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1379963486, now seen corresponding path program 1 times [2020-07-28 20:18:15,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:18:15,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230779078] [2020-07-28 20:18:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:18:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:18:16,143 INFO L280 TraceCheckUtils]: 0: Hoare triple {458#true} [215] ULTIMATE.startENTRY-->L696: Formula: (let ((.cse1 (store |v_#valid_33| 0 0))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20| 1))) (and (= 0 v_~flag1~0_41) (= 0 |v_ULTIMATE.start_main_~#t2~0.offset_17|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t1~0.base_20|) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20|)) (= 0 v_~flag2~0_56) (= 0 |v_ULTIMATE.start_main_~#t1~0.offset_17|) (= (store .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20| 1) |v_#valid_31|) (= (store (store |v_#length_13| |v_ULTIMATE.start_main_~#t1~0.base_20| 4) |v_ULTIMATE.start_main_~#t2~0.base_20| 4) |v_#length_12|) (= (store |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20| (store (select |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20|) |v_ULTIMATE.start_main_~#t1~0.offset_17| 0)) |v_#memory_int_14|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t2~0.base_20|) (= 0 v_~x~0_54) (< 0 |v_#StackHeapBarrier_9|) (= 0 (select .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20|)) (= 0 |v_#NULL.base_3|) (= 0 |v_#NULL.offset_3|) (= 0 v_~turn~0_70)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_33|, #memory_int=|v_#memory_int_15|, #length=|v_#length_13|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_7|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_17|, #NULL.offset=|v_#NULL.offset_3|, #NULL.base=|v_#NULL.base_3|, ULTIMATE.start_main_~#t1~0.base=|v_ULTIMATE.start_main_~#t1~0.base_20|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_12|, ~flag2~0=v_~flag2~0_56, #valid=|v_#valid_31|, #memory_int=|v_#memory_int_14|, ~flag1~0=v_~flag1~0_41, #length=|v_#length_12|, ~turn~0=v_~turn~0_70, ULTIMATE.start_main_~#t1~0.offset=|v_ULTIMATE.start_main_~#t1~0.offset_17|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_20|, ULTIMATE.start_main_#t~mem5=|v_ULTIMATE.start_main_#t~mem5_11|, ~x~0=v_~x~0_54, ULTIMATE.start_main_#t~mem4=|v_ULTIMATE.start_main_#t~mem4_12|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~#t2~0.offset, #NULL.offset, #NULL.base, ULTIMATE.start_main_~#t1~0.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, #memory_int, ~flag1~0, #length, ~turn~0, ULTIMATE.start_main_~#t1~0.offset, ULTIMATE.start_main_~#t2~0.base, ULTIMATE.start_main_#t~mem5, ~x~0, ULTIMATE.start_main_#t~mem4] {458#true} is VALID [2020-07-28 20:18:16,144 INFO L280 TraceCheckUtils]: 1: Hoare triple {458#true} [175] L696-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~_.base_3|) (= 0 |v_thr1Thread1of1ForFork0_#in~_.offset_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_3, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_3|, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_3} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, thr1Thread1of1ForFork0_#in~_.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~_.base, thr1Thread1of1ForFork0_#res.offset, thr1Thread1of1ForFork0_~_.offset] {458#true} is VALID [2020-07-28 20:18:16,145 INFO L280 TraceCheckUtils]: 2: Hoare triple {458#true} [182] thr1ENTRY-->L678: Formula: (and (= |v_thr1Thread1of1ForFork0_#in~_.offset_4| v_thr1Thread1of1ForFork0_~_.offset_4) (= v_thr1Thread1of1ForFork0_~_.base_4 |v_thr1Thread1of1ForFork0_#in~_.base_4|) (= 1 v_~flag1~0_6)) InVars {thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_4|, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_4|} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_4, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_4|, ~flag1~0=v_~flag1~0_6, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_4|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_4} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, ~flag1~0, thr1Thread1of1ForFork0_~_.offset] {458#true} is VALID [2020-07-28 20:18:16,145 INFO L280 TraceCheckUtils]: 3: Hoare triple {458#true} [162] L678-->L679-2: Formula: (= v_~turn~0_6 1) InVars {} OutVars{~turn~0=v_~turn~0_6} AuxVars[] AssignedVars[~turn~0] {458#true} is VALID [2020-07-28 20:18:16,147 INFO L280 TraceCheckUtils]: 4: Hoare triple {458#true} [192] L679-2-->L681: Formula: false InVars {} OutVars{~x~0=v_~x~0_21} AuxVars[] AssignedVars[~x~0] {459#false} is VALID [2020-07-28 20:18:16,147 INFO L280 TraceCheckUtils]: 5: Hoare triple {459#false} [189] L681-->thr1Err0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= v_~x~0_17 0)) InVars {~x~0=v_~x~0_17} OutVars{~x~0=v_~x~0_17} AuxVars[] AssignedVars[] {459#false} is VALID [2020-07-28 20:18:16,150 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 20:18:16,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230779078] [2020-07-28 20:18:16,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:18:16,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 20:18:16,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375547098] [2020-07-28 20:18:16,159 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-28 20:18:16,161 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:18:16,164 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 20:18:16,190 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 20:18:16,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 20:18:16,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:18:16,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 20:18:16,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 20:18:16,203 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2020-07-28 20:18:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:16,298 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2020-07-28 20:18:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 20:18:16,298 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-28 20:18:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:18:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 20:18:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2020-07-28 20:18:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 20:18:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2020-07-28 20:18:16,304 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 32 transitions. [2020-07-28 20:18:16,371 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 20:18:16,391 INFO L225 Difference]: With dead ends: 197 [2020-07-28 20:18:16,392 INFO L226 Difference]: Without dead ends: 174 [2020-07-28 20:18:16,394 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 20:18:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-07-28 20:18:16,439 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,441 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,441 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,442 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,442 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,442 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,443 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,443 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,443 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,444 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,444 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,444 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,445 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,445 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,446 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,446 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,446 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,447 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,447 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,447 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,448 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,448 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,448 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,449 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,449 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,449 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,450 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,450 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,450 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,451 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,451 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,451 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,452 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,452 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,452 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,452 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,453 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,453 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,453 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,454 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,454 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,454 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,455 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,455 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,456 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,456 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,456 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,457 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,457 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,457 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,458 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,458 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,459 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,459 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,459 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,460 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,460 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,460 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,461 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,461 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,462 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,462 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,462 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,463 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,463 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,464 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,464 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,465 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,465 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,465 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,466 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,466 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,467 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,467 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,468 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,468 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,468 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,469 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,469 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,469 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,470 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,470 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,470 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,471 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,471 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,472 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,472 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,472 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,473 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,473 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,474 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,474 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,475 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,475 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,475 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,476 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,476 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,476 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,477 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,477 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,478 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,478 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,478 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,479 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,479 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,480 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,480 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,480 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,481 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,481 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,482 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,482 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,483 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,483 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,483 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,484 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,484 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,485 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,485 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,485 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,486 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,486 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,487 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,487 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,487 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,488 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,488 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,489 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,489 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,489 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,490 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,490 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,490 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,491 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,491 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,492 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,492 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,492 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,493 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,493 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,494 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,494 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,494 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,495 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,495 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,496 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,496 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,496 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,497 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,497 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,498 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,498 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,499 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,499 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,499 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,500 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,500 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,501 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,501 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,501 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,502 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,502 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,503 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,503 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,503 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,504 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,504 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,505 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,505 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,505 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,506 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,506 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,507 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,507 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-07-28 20:18:16,508 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:18:16,509 INFO L82 GeneralOperation]: Start isEquivalent. First operand 174 states. Second operand 174 states. [2020-07-28 20:18:16,510 INFO L74 IsIncluded]: Start isIncluded. First operand 174 states. Second operand 174 states. [2020-07-28 20:18:16,510 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 174 states. [2020-07-28 20:18:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:16,527 INFO L93 Difference]: Finished difference Result 174 states and 406 transitions. [2020-07-28 20:18:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2020-07-28 20:18:16,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:16,531 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:16,531 INFO L74 IsIncluded]: Start isIncluded. First operand 174 states. Second operand 174 states. [2020-07-28 20:18:16,531 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 174 states. [2020-07-28 20:18:16,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:16,547 INFO L93 Difference]: Finished difference Result 174 states and 406 transitions. [2020-07-28 20:18:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2020-07-28 20:18:16,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:16,550 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:16,550 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:18:16,550 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:18:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-28 20:18:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 406 transitions. [2020-07-28 20:18:16,565 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 406 transitions. Word has length 6 [2020-07-28 20:18:16,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:18:16,566 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 406 transitions. [2020-07-28 20:18:16,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 20:18:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2020-07-28 20:18:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 20:18:16,567 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:18:16,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 20:18:16,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 20:18:16,568 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:18:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:18:16,569 INFO L82 PathProgramCache]: Analyzing trace with hash 170777462, now seen corresponding path program 1 times [2020-07-28 20:18:16,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:18:16,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73312245] [2020-07-28 20:18:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:18:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:18:16,646 INFO L280 TraceCheckUtils]: 0: Hoare triple {1355#true} [215] ULTIMATE.startENTRY-->L696: Formula: (let ((.cse1 (store |v_#valid_33| 0 0))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20| 1))) (and (= 0 v_~flag1~0_41) (= 0 |v_ULTIMATE.start_main_~#t2~0.offset_17|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t1~0.base_20|) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20|)) (= 0 v_~flag2~0_56) (= 0 |v_ULTIMATE.start_main_~#t1~0.offset_17|) (= (store .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20| 1) |v_#valid_31|) (= (store (store |v_#length_13| |v_ULTIMATE.start_main_~#t1~0.base_20| 4) |v_ULTIMATE.start_main_~#t2~0.base_20| 4) |v_#length_12|) (= (store |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20| (store (select |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20|) |v_ULTIMATE.start_main_~#t1~0.offset_17| 0)) |v_#memory_int_14|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t2~0.base_20|) (= 0 v_~x~0_54) (< 0 |v_#StackHeapBarrier_9|) (= 0 (select .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20|)) (= 0 |v_#NULL.base_3|) (= 0 |v_#NULL.offset_3|) (= 0 v_~turn~0_70)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_33|, #memory_int=|v_#memory_int_15|, #length=|v_#length_13|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_7|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_17|, #NULL.offset=|v_#NULL.offset_3|, #NULL.base=|v_#NULL.base_3|, ULTIMATE.start_main_~#t1~0.base=|v_ULTIMATE.start_main_~#t1~0.base_20|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_12|, ~flag2~0=v_~flag2~0_56, #valid=|v_#valid_31|, #memory_int=|v_#memory_int_14|, ~flag1~0=v_~flag1~0_41, #length=|v_#length_12|, ~turn~0=v_~turn~0_70, ULTIMATE.start_main_~#t1~0.offset=|v_ULTIMATE.start_main_~#t1~0.offset_17|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_20|, ULTIMATE.start_main_#t~mem5=|v_ULTIMATE.start_main_#t~mem5_11|, ~x~0=v_~x~0_54, ULTIMATE.start_main_#t~mem4=|v_ULTIMATE.start_main_#t~mem4_12|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~#t2~0.offset, #NULL.offset, #NULL.base, ULTIMATE.start_main_~#t1~0.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, #memory_int, ~flag1~0, #length, ~turn~0, ULTIMATE.start_main_~#t1~0.offset, ULTIMATE.start_main_~#t2~0.base, ULTIMATE.start_main_#t~mem5, ~x~0, ULTIMATE.start_main_#t~mem4] {1355#true} is VALID [2020-07-28 20:18:16,646 INFO L280 TraceCheckUtils]: 1: Hoare triple {1355#true} [175] L696-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~_.base_3|) (= 0 |v_thr1Thread1of1ForFork0_#in~_.offset_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_3, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_3|, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_3} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, thr1Thread1of1ForFork0_#in~_.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~_.base, thr1Thread1of1ForFork0_#res.offset, thr1Thread1of1ForFork0_~_.offset] {1355#true} is VALID [2020-07-28 20:18:16,647 INFO L280 TraceCheckUtils]: 2: Hoare triple {1355#true} [182] thr1ENTRY-->L678: Formula: (and (= |v_thr1Thread1of1ForFork0_#in~_.offset_4| v_thr1Thread1of1ForFork0_~_.offset_4) (= v_thr1Thread1of1ForFork0_~_.base_4 |v_thr1Thread1of1ForFork0_#in~_.base_4|) (= 1 v_~flag1~0_6)) InVars {thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_4|, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_4|} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_4, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_4|, ~flag1~0=v_~flag1~0_6, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_4|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_4} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, ~flag1~0, thr1Thread1of1ForFork0_~_.offset] {1355#true} is VALID [2020-07-28 20:18:16,647 INFO L280 TraceCheckUtils]: 3: Hoare triple {1355#true} [162] L678-->L679-2: Formula: (= v_~turn~0_6 1) InVars {} OutVars{~turn~0=v_~turn~0_6} AuxVars[] AssignedVars[~turn~0] {1355#true} is VALID [2020-07-28 20:18:16,648 INFO L280 TraceCheckUtils]: 4: Hoare triple {1355#true} [164] L679-2-->L679-3: Formula: (or (not (= 1 v_~flag2~0_3)) (not (= 1 v_~turn~0_4))) InVars {~turn~0=v_~turn~0_4, ~flag2~0=v_~flag2~0_3} OutVars{~turn~0=v_~turn~0_4, ~flag2~0=v_~flag2~0_3} AuxVars[] AssignedVars[] {1355#true} is VALID [2020-07-28 20:18:16,649 INFO L280 TraceCheckUtils]: 5: Hoare triple {1355#true} [166] L679-3-->L681: Formula: (= v_~x~0_4 0) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] {1357#(= 0 ~x~0)} is VALID [2020-07-28 20:18:16,650 INFO L280 TraceCheckUtils]: 6: Hoare triple {1357#(= 0 ~x~0)} [189] L681-->thr1Err0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= v_~x~0_17 0)) InVars {~x~0=v_~x~0_17} OutVars{~x~0=v_~x~0_17} AuxVars[] AssignedVars[] {1356#false} is VALID [2020-07-28 20:18:16,651 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 20:18:16,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73312245] [2020-07-28 20:18:16,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:18:16,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 20:18:16,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14574348] [2020-07-28 20:18:16,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-28 20:18:16,654 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:18:16,654 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 20:18:16,665 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:18:16,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 20:18:16,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:18:16,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 20:18:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:18:16,666 INFO L87 Difference]: Start difference. First operand 174 states and 406 transitions. Second operand 3 states. [2020-07-28 20:18:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:16,747 INFO L93 Difference]: Finished difference Result 189 states and 416 transitions. [2020-07-28 20:18:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 20:18:16,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-28 20:18:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:18:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:18:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-07-28 20:18:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:18:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-07-28 20:18:16,750 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 41 transitions. [2020-07-28 20:18:16,800 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 20:18:16,805 INFO L225 Difference]: With dead ends: 189 [2020-07-28 20:18:16,805 INFO L226 Difference]: Without dead ends: 154 [2020-07-28 20:18:16,806 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 20:18:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-28 20:18:16,816 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,816 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,817 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,817 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,817 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,817 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,818 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,818 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,818 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,818 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,819 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,819 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,819 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,820 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,820 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,820 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,820 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,821 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,821 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,842 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,843 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,843 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,843 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,843 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,843 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,844 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,844 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,844 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,844 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,844 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,845 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,845 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,845 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,845 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,851 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,851 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,851 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,852 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,852 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,852 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,852 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,853 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,853 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,853 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,853 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,853 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,854 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,854 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,854 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,854 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,854 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,855 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,855 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,855 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,855 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,855 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,856 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,857 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,857 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,857 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,857 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,857 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,858 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,858 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,858 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,858 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,858 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,859 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,859 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,859 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,859 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,860 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,860 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,860 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,861 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,861 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,862 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,862 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,862 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,862 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,863 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,866 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,866 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,867 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,867 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,867 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,867 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,868 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,868 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,868 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,868 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,868 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,869 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,869 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,869 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,869 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,869 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,870 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,870 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,870 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,870 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,870 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,871 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,871 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,871 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,871 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,871 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,872 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,872 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,872 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,872 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,872 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,873 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,873 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,873 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,873 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,873 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,874 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,875 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,875 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,876 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,876 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,877 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,877 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,877 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,877 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,877 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,878 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,878 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,879 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,879 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,879 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,879 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,880 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,880 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,880 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,880 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,881 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,881 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,881 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2020-07-28 20:18:16,881 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:18:16,882 INFO L82 GeneralOperation]: Start isEquivalent. First operand 154 states. Second operand 140 states. [2020-07-28 20:18:16,882 INFO L74 IsIncluded]: Start isIncluded. First operand 154 states. Second operand 140 states. [2020-07-28 20:18:16,882 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 140 states. [2020-07-28 20:18:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:16,892 INFO L93 Difference]: Finished difference Result 154 states and 338 transitions. [2020-07-28 20:18:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 338 transitions. [2020-07-28 20:18:16,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:16,897 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:16,897 INFO L74 IsIncluded]: Start isIncluded. First operand 140 states. Second operand 154 states. [2020-07-28 20:18:16,897 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 154 states. [2020-07-28 20:18:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:16,906 INFO L93 Difference]: Finished difference Result 154 states and 338 transitions. [2020-07-28 20:18:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 338 transitions. [2020-07-28 20:18:16,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:16,908 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:16,909 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:18:16,909 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:18:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-28 20:18:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 317 transitions. [2020-07-28 20:18:16,917 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 317 transitions. Word has length 7 [2020-07-28 20:18:16,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:18:16,917 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 317 transitions. [2020-07-28 20:18:16,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 20:18:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 317 transitions. [2020-07-28 20:18:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 20:18:16,918 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:18:16,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 20:18:16,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 20:18:16,919 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:18:16,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:18:16,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1618546552, now seen corresponding path program 1 times [2020-07-28 20:18:16,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:18:16,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087885136] [2020-07-28 20:18:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:18:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:18:17,032 INFO L280 TraceCheckUtils]: 0: Hoare triple {2137#true} [215] ULTIMATE.startENTRY-->L696: Formula: (let ((.cse1 (store |v_#valid_33| 0 0))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20| 1))) (and (= 0 v_~flag1~0_41) (= 0 |v_ULTIMATE.start_main_~#t2~0.offset_17|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t1~0.base_20|) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20|)) (= 0 v_~flag2~0_56) (= 0 |v_ULTIMATE.start_main_~#t1~0.offset_17|) (= (store .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20| 1) |v_#valid_31|) (= (store (store |v_#length_13| |v_ULTIMATE.start_main_~#t1~0.base_20| 4) |v_ULTIMATE.start_main_~#t2~0.base_20| 4) |v_#length_12|) (= (store |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20| (store (select |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20|) |v_ULTIMATE.start_main_~#t1~0.offset_17| 0)) |v_#memory_int_14|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t2~0.base_20|) (= 0 v_~x~0_54) (< 0 |v_#StackHeapBarrier_9|) (= 0 (select .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20|)) (= 0 |v_#NULL.base_3|) (= 0 |v_#NULL.offset_3|) (= 0 v_~turn~0_70)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_33|, #memory_int=|v_#memory_int_15|, #length=|v_#length_13|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_7|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_17|, #NULL.offset=|v_#NULL.offset_3|, #NULL.base=|v_#NULL.base_3|, ULTIMATE.start_main_~#t1~0.base=|v_ULTIMATE.start_main_~#t1~0.base_20|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_12|, ~flag2~0=v_~flag2~0_56, #valid=|v_#valid_31|, #memory_int=|v_#memory_int_14|, ~flag1~0=v_~flag1~0_41, #length=|v_#length_12|, ~turn~0=v_~turn~0_70, ULTIMATE.start_main_~#t1~0.offset=|v_ULTIMATE.start_main_~#t1~0.offset_17|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_20|, ULTIMATE.start_main_#t~mem5=|v_ULTIMATE.start_main_#t~mem5_11|, ~x~0=v_~x~0_54, ULTIMATE.start_main_#t~mem4=|v_ULTIMATE.start_main_#t~mem4_12|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~#t2~0.offset, #NULL.offset, #NULL.base, ULTIMATE.start_main_~#t1~0.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, #memory_int, ~flag1~0, #length, ~turn~0, ULTIMATE.start_main_~#t1~0.offset, ULTIMATE.start_main_~#t2~0.base, ULTIMATE.start_main_#t~mem5, ~x~0, ULTIMATE.start_main_#t~mem4] {2137#true} is VALID [2020-07-28 20:18:17,033 INFO L280 TraceCheckUtils]: 1: Hoare triple {2137#true} [175] L696-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~_.base_3|) (= 0 |v_thr1Thread1of1ForFork0_#in~_.offset_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_3, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_3|, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_3} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, thr1Thread1of1ForFork0_#in~_.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~_.base, thr1Thread1of1ForFork0_#res.offset, thr1Thread1of1ForFork0_~_.offset] {2137#true} is VALID [2020-07-28 20:18:17,033 INFO L280 TraceCheckUtils]: 2: Hoare triple {2137#true} [198] L696-1-->L697-1: Formula: (= (store |v_#memory_int_9| |v_ULTIMATE.start_main_~#t2~0.base_11| (store (select |v_#memory_int_9| |v_ULTIMATE.start_main_~#t2~0.base_11|) |v_ULTIMATE.start_main_~#t2~0.offset_10| 1)) |v_#memory_int_8|) InVars {#memory_int=|v_#memory_int_9|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_10|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_11|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, #memory_int=|v_#memory_int_8|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_10|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_11|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #memory_int] {2137#true} is VALID [2020-07-28 20:18:17,033 INFO L280 TraceCheckUtils]: 3: Hoare triple {2137#true} [177] L697-1-->thr2ENTRY: Formula: (and (= 0 |v_thr2Thread1of1ForFork1_#in~_.offset_3|) (= 0 |v_thr2Thread1of1ForFork1_#in~_.base_3|) (= 1 v_thr2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thr2Thread1of1ForFork1_thidvar0=v_thr2Thread1of1ForFork1_thidvar0_2, thr2Thread1of1ForFork1_~_.offset=v_thr2Thread1of1ForFork1_~_.offset_3, thr2Thread1of1ForFork1_#res.base=|v_thr2Thread1of1ForFork1_#res.base_3|, thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_3|, thr2Thread1of1ForFork1_#res.offset=|v_thr2Thread1of1ForFork1_#res.offset_3|, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_3|, thr2Thread1of1ForFork1_~_.base=v_thr2Thread1of1ForFork1_~_.base_3} AuxVars[] AssignedVars[thr2Thread1of1ForFork1_thidvar0, thr2Thread1of1ForFork1_~_.offset, thr2Thread1of1ForFork1_#res.base, thr2Thread1of1ForFork1_#in~_.offset, thr2Thread1of1ForFork1_#res.offset, thr2Thread1of1ForFork1_#in~_.base, thr2Thread1of1ForFork1_~_.base] {2137#true} is VALID [2020-07-28 20:18:17,034 INFO L280 TraceCheckUtils]: 4: Hoare triple {2137#true} [190] thr2ENTRY-->L687: Formula: (and (= 1 v_~flag2~0_6) (= |v_thr2Thread1of1ForFork1_#in~_.base_4| v_thr2Thread1of1ForFork1_~_.base_4) (= v_thr2Thread1of1ForFork1_~_.offset_4 |v_thr2Thread1of1ForFork1_#in~_.offset_4|)) InVars {thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_4|, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_4|} OutVars{thr2Thread1of1ForFork1_~_.offset=v_thr2Thread1of1ForFork1_~_.offset_4, thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_4|, ~flag2~0=v_~flag2~0_6, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_4|, thr2Thread1of1ForFork1_~_.base=v_thr2Thread1of1ForFork1_~_.base_4} AuxVars[] AssignedVars[thr2Thread1of1ForFork1_~_.offset, ~flag2~0, thr2Thread1of1ForFork1_~_.base] {2137#true} is VALID [2020-07-28 20:18:17,034 INFO L280 TraceCheckUtils]: 5: Hoare triple {2137#true} [148] L687-->L688-2: Formula: (= v_~turn~0_1 0) InVars {} OutVars{~turn~0=v_~turn~0_1} AuxVars[] AssignedVars[~turn~0] {2137#true} is VALID [2020-07-28 20:18:17,035 INFO L280 TraceCheckUtils]: 6: Hoare triple {2137#true} [150] L688-2-->L688-3: Formula: (or (not (= 1 v_~flag1~0_1)) (not (= 0 v_~turn~0_2))) InVars {~turn~0=v_~turn~0_2, ~flag1~0=v_~flag1~0_1} OutVars{~turn~0=v_~turn~0_2, ~flag1~0=v_~flag1~0_1} AuxVars[] AssignedVars[] {2137#true} is VALID [2020-07-28 20:18:17,035 INFO L280 TraceCheckUtils]: 7: Hoare triple {2137#true} [152] L688-3-->L690: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] {2139#(= 1 ~x~0)} is VALID [2020-07-28 20:18:17,036 INFO L280 TraceCheckUtils]: 8: Hoare triple {2139#(= 1 ~x~0)} [196] L690-->thr2Err0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= 1 v_~x~0_29)) InVars {~x~0=v_~x~0_29} OutVars{~x~0=v_~x~0_29} AuxVars[] AssignedVars[] {2138#false} is VALID [2020-07-28 20:18:17,037 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 20:18:17,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087885136] [2020-07-28 20:18:17,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:18:17,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 20:18:17,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055200170] [2020-07-28 20:18:17,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-07-28 20:18:17,038 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:18:17,039 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 20:18:17,050 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 20:18:17,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 20:18:17,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:18:17,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 20:18:17,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 20:18:17,052 INFO L87 Difference]: Start difference. First operand 140 states and 317 transitions. Second operand 3 states. [2020-07-28 20:18:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,113 INFO L93 Difference]: Finished difference Result 135 states and 290 transitions. [2020-07-28 20:18:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 20:18:17,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-07-28 20:18:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:18:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:18:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2020-07-28 20:18:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 20:18:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2020-07-28 20:18:17,116 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 37 transitions. [2020-07-28 20:18:17,157 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:18:17,159 INFO L225 Difference]: With dead ends: 135 [2020-07-28 20:18:17,159 INFO L226 Difference]: Without dead ends: 96 [2020-07-28 20:18:17,160 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 20:18:17,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-28 20:18:17,164 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,164 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,164 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,165 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,165 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,165 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,165 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,166 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,166 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,166 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,167 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,167 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,167 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,168 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,168 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,168 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,169 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,169 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,169 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,169 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,170 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,170 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,170 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,170 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,171 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,171 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,171 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,172 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,172 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,172 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,173 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,173 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,173 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,173 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,174 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,174 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,174 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,174 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,175 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,175 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,175 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,176 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,176 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,176 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,177 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,177 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,177 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,177 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,178 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,178 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,178 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,178 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,179 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,179 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,179 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,179 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,180 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,180 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,180 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,180 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,181 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,181 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,181 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,182 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,182 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,182 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,182 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,183 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,183 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,183 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,184 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,184 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,184 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,184 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,185 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,185 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,185 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,185 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,186 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,186 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,186 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,187 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,187 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,187 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,188 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,188 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,188 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,188 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,189 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,189 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,189 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,189 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,190 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,190 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,190 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,191 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-28 20:18:17,191 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:18:17,191 INFO L82 GeneralOperation]: Start isEquivalent. First operand 96 states. Second operand 96 states. [2020-07-28 20:18:17,191 INFO L74 IsIncluded]: Start isIncluded. First operand 96 states. Second operand 96 states. [2020-07-28 20:18:17,192 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 96 states. [2020-07-28 20:18:17,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,196 INFO L93 Difference]: Finished difference Result 96 states and 204 transitions. [2020-07-28 20:18:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2020-07-28 20:18:17,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:17,197 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:17,197 INFO L74 IsIncluded]: Start isIncluded. First operand 96 states. Second operand 96 states. [2020-07-28 20:18:17,197 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 96 states. [2020-07-28 20:18:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,202 INFO L93 Difference]: Finished difference Result 96 states and 204 transitions. [2020-07-28 20:18:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2020-07-28 20:18:17,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:17,202 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:17,203 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:18:17,203 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:18:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-28 20:18:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 204 transitions. [2020-07-28 20:18:17,207 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 204 transitions. Word has length 9 [2020-07-28 20:18:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:18:17,208 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 204 transitions. [2020-07-28 20:18:17,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 20:18:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2020-07-28 20:18:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 20:18:17,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:18:17,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 20:18:17,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 20:18:17,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:18:17,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:18:17,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1612301587, now seen corresponding path program 1 times [2020-07-28 20:18:17,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:18:17,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034765092] [2020-07-28 20:18:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:18:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:18:17,270 INFO L280 TraceCheckUtils]: 0: Hoare triple {2661#true} [215] ULTIMATE.startENTRY-->L696: Formula: (let ((.cse1 (store |v_#valid_33| 0 0))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20| 1))) (and (= 0 v_~flag1~0_41) (= 0 |v_ULTIMATE.start_main_~#t2~0.offset_17|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t1~0.base_20|) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20|)) (= 0 v_~flag2~0_56) (= 0 |v_ULTIMATE.start_main_~#t1~0.offset_17|) (= (store .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20| 1) |v_#valid_31|) (= (store (store |v_#length_13| |v_ULTIMATE.start_main_~#t1~0.base_20| 4) |v_ULTIMATE.start_main_~#t2~0.base_20| 4) |v_#length_12|) (= (store |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20| (store (select |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20|) |v_ULTIMATE.start_main_~#t1~0.offset_17| 0)) |v_#memory_int_14|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t2~0.base_20|) (= 0 v_~x~0_54) (< 0 |v_#StackHeapBarrier_9|) (= 0 (select .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20|)) (= 0 |v_#NULL.base_3|) (= 0 |v_#NULL.offset_3|) (= 0 v_~turn~0_70)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_33|, #memory_int=|v_#memory_int_15|, #length=|v_#length_13|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_7|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_17|, #NULL.offset=|v_#NULL.offset_3|, #NULL.base=|v_#NULL.base_3|, ULTIMATE.start_main_~#t1~0.base=|v_ULTIMATE.start_main_~#t1~0.base_20|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_12|, ~flag2~0=v_~flag2~0_56, #valid=|v_#valid_31|, #memory_int=|v_#memory_int_14|, ~flag1~0=v_~flag1~0_41, #length=|v_#length_12|, ~turn~0=v_~turn~0_70, ULTIMATE.start_main_~#t1~0.offset=|v_ULTIMATE.start_main_~#t1~0.offset_17|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_20|, ULTIMATE.start_main_#t~mem5=|v_ULTIMATE.start_main_#t~mem5_11|, ~x~0=v_~x~0_54, ULTIMATE.start_main_#t~mem4=|v_ULTIMATE.start_main_#t~mem4_12|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~#t2~0.offset, #NULL.offset, #NULL.base, ULTIMATE.start_main_~#t1~0.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, #memory_int, ~flag1~0, #length, ~turn~0, ULTIMATE.start_main_~#t1~0.offset, ULTIMATE.start_main_~#t2~0.base, ULTIMATE.start_main_#t~mem5, ~x~0, ULTIMATE.start_main_#t~mem4] {2661#true} is VALID [2020-07-28 20:18:17,270 INFO L280 TraceCheckUtils]: 1: Hoare triple {2661#true} [175] L696-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~_.base_3|) (= 0 |v_thr1Thread1of1ForFork0_#in~_.offset_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_3, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_3|, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_3} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, thr1Thread1of1ForFork0_#in~_.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~_.base, thr1Thread1of1ForFork0_#res.offset, thr1Thread1of1ForFork0_~_.offset] {2661#true} is VALID [2020-07-28 20:18:17,271 INFO L280 TraceCheckUtils]: 2: Hoare triple {2661#true} [182] thr1ENTRY-->L678: Formula: (and (= |v_thr1Thread1of1ForFork0_#in~_.offset_4| v_thr1Thread1of1ForFork0_~_.offset_4) (= v_thr1Thread1of1ForFork0_~_.base_4 |v_thr1Thread1of1ForFork0_#in~_.base_4|) (= 1 v_~flag1~0_6)) InVars {thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_4|, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_4|} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_4, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_4|, ~flag1~0=v_~flag1~0_6, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_4|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_4} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, ~flag1~0, thr1Thread1of1ForFork0_~_.offset] {2663#(= 1 ~flag1~0)} is VALID [2020-07-28 20:18:17,272 INFO L280 TraceCheckUtils]: 3: Hoare triple {2663#(= 1 ~flag1~0)} [162] L678-->L679-2: Formula: (= v_~turn~0_6 1) InVars {} OutVars{~turn~0=v_~turn~0_6} AuxVars[] AssignedVars[~turn~0] {2663#(= 1 ~flag1~0)} is VALID [2020-07-28 20:18:17,272 INFO L280 TraceCheckUtils]: 4: Hoare triple {2663#(= 1 ~flag1~0)} [164] L679-2-->L679-3: Formula: (or (not (= 1 v_~flag2~0_3)) (not (= 1 v_~turn~0_4))) InVars {~turn~0=v_~turn~0_4, ~flag2~0=v_~flag2~0_3} OutVars{~turn~0=v_~turn~0_4, ~flag2~0=v_~flag2~0_3} AuxVars[] AssignedVars[] {2663#(= 1 ~flag1~0)} is VALID [2020-07-28 20:18:17,273 INFO L280 TraceCheckUtils]: 5: Hoare triple {2663#(= 1 ~flag1~0)} [166] L679-3-->L681: Formula: (= v_~x~0_4 0) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] {2663#(= 1 ~flag1~0)} is VALID [2020-07-28 20:18:17,277 INFO L280 TraceCheckUtils]: 6: Hoare triple {2663#(= 1 ~flag1~0)} [198] L696-1-->L697-1: Formula: (= (store |v_#memory_int_9| |v_ULTIMATE.start_main_~#t2~0.base_11| (store (select |v_#memory_int_9| |v_ULTIMATE.start_main_~#t2~0.base_11|) |v_ULTIMATE.start_main_~#t2~0.offset_10| 1)) |v_#memory_int_8|) InVars {#memory_int=|v_#memory_int_9|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_10|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_11|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, #memory_int=|v_#memory_int_8|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_10|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_11|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #memory_int] {2663#(= 1 ~flag1~0)} is VALID [2020-07-28 20:18:17,278 INFO L280 TraceCheckUtils]: 7: Hoare triple {2663#(= 1 ~flag1~0)} [177] L697-1-->thr2ENTRY: Formula: (and (= 0 |v_thr2Thread1of1ForFork1_#in~_.offset_3|) (= 0 |v_thr2Thread1of1ForFork1_#in~_.base_3|) (= 1 v_thr2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thr2Thread1of1ForFork1_thidvar0=v_thr2Thread1of1ForFork1_thidvar0_2, thr2Thread1of1ForFork1_~_.offset=v_thr2Thread1of1ForFork1_~_.offset_3, thr2Thread1of1ForFork1_#res.base=|v_thr2Thread1of1ForFork1_#res.base_3|, thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_3|, thr2Thread1of1ForFork1_#res.offset=|v_thr2Thread1of1ForFork1_#res.offset_3|, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_3|, thr2Thread1of1ForFork1_~_.base=v_thr2Thread1of1ForFork1_~_.base_3} AuxVars[] AssignedVars[thr2Thread1of1ForFork1_thidvar0, thr2Thread1of1ForFork1_~_.offset, thr2Thread1of1ForFork1_#res.base, thr2Thread1of1ForFork1_#in~_.offset, thr2Thread1of1ForFork1_#res.offset, thr2Thread1of1ForFork1_#in~_.base, thr2Thread1of1ForFork1_~_.base] {2663#(= 1 ~flag1~0)} is VALID [2020-07-28 20:18:17,278 INFO L280 TraceCheckUtils]: 8: Hoare triple {2663#(= 1 ~flag1~0)} [190] thr2ENTRY-->L687: Formula: (and (= 1 v_~flag2~0_6) (= |v_thr2Thread1of1ForFork1_#in~_.base_4| v_thr2Thread1of1ForFork1_~_.base_4) (= v_thr2Thread1of1ForFork1_~_.offset_4 |v_thr2Thread1of1ForFork1_#in~_.offset_4|)) InVars {thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_4|, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_4|} OutVars{thr2Thread1of1ForFork1_~_.offset=v_thr2Thread1of1ForFork1_~_.offset_4, thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_4|, ~flag2~0=v_~flag2~0_6, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_4|, thr2Thread1of1ForFork1_~_.base=v_thr2Thread1of1ForFork1_~_.base_4} AuxVars[] AssignedVars[thr2Thread1of1ForFork1_~_.offset, ~flag2~0, thr2Thread1of1ForFork1_~_.base] {2663#(= 1 ~flag1~0)} is VALID [2020-07-28 20:18:17,279 INFO L280 TraceCheckUtils]: 9: Hoare triple {2663#(= 1 ~flag1~0)} [148] L687-->L688-2: Formula: (= v_~turn~0_1 0) InVars {} OutVars{~turn~0=v_~turn~0_1} AuxVars[] AssignedVars[~turn~0] {2664#(and (= 0 ~turn~0) (= 1 ~flag1~0))} is VALID [2020-07-28 20:18:17,280 INFO L280 TraceCheckUtils]: 10: Hoare triple {2664#(and (= 0 ~turn~0) (= 1 ~flag1~0))} [150] L688-2-->L688-3: Formula: (or (not (= 1 v_~flag1~0_1)) (not (= 0 v_~turn~0_2))) InVars {~turn~0=v_~turn~0_2, ~flag1~0=v_~flag1~0_1} OutVars{~turn~0=v_~turn~0_2, ~flag1~0=v_~flag1~0_1} AuxVars[] AssignedVars[] {2662#false} is VALID [2020-07-28 20:18:17,280 INFO L280 TraceCheckUtils]: 11: Hoare triple {2662#false} [152] L688-3-->L690: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] {2662#false} is VALID [2020-07-28 20:18:17,281 INFO L280 TraceCheckUtils]: 12: Hoare triple {2662#false} [189] L681-->thr1Err0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= v_~x~0_17 0)) InVars {~x~0=v_~x~0_17} OutVars{~x~0=v_~x~0_17} AuxVars[] AssignedVars[] {2662#false} is VALID [2020-07-28 20:18:17,282 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 20:18:17,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034765092] [2020-07-28 20:18:17,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:18:17,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 20:18:17,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076656559] [2020-07-28 20:18:17,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-28 20:18:17,283 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:18:17,283 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 20:18:17,299 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:18:17,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 20:18:17,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:18:17,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 20:18:17,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 20:18:17,300 INFO L87 Difference]: Start difference. First operand 96 states and 204 transitions. Second operand 4 states. [2020-07-28 20:18:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,395 INFO L93 Difference]: Finished difference Result 106 states and 227 transitions. [2020-07-28 20:18:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 20:18:17,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-28 20:18:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:18:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 20:18:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2020-07-28 20:18:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 20:18:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2020-07-28 20:18:17,399 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 44 transitions. [2020-07-28 20:18:17,457 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:18:17,458 INFO L225 Difference]: With dead ends: 106 [2020-07-28 20:18:17,459 INFO L226 Difference]: Without dead ends: 82 [2020-07-28 20:18:17,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 20:18:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-28 20:18:17,461 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,462 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,462 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,462 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,464 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,465 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,465 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,465 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,465 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,466 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,466 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,466 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,466 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,467 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,467 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,467 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,468 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,468 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,468 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,468 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,469 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,469 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,469 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,469 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,470 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,470 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,470 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,470 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,471 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,471 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,471 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,471 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,472 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,472 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,472 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,472 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,473 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,473 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,473 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,473 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,474 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,474 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,474 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,474 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,475 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,475 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,475 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,476 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,476 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,476 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,476 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,477 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,477 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,477 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,477 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,478 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,478 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,478 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,478 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,479 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,479 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,479 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,479 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,480 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,480 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,480 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,480 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,481 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,481 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,481 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,481 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,482 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,482 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,482 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,482 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,483 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,483 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,483 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,484 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,484 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,484 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,484 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 20:18:17,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-28 20:18:17,485 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:18:17,485 INFO L82 GeneralOperation]: Start isEquivalent. First operand 82 states. Second operand 82 states. [2020-07-28 20:18:17,485 INFO L74 IsIncluded]: Start isIncluded. First operand 82 states. Second operand 82 states. [2020-07-28 20:18:17,486 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 82 states. [2020-07-28 20:18:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,489 INFO L93 Difference]: Finished difference Result 82 states and 160 transitions. [2020-07-28 20:18:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-07-28 20:18:17,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:17,490 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:17,491 INFO L74 IsIncluded]: Start isIncluded. First operand 82 states. Second operand 82 states. [2020-07-28 20:18:17,491 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 82 states. [2020-07-28 20:18:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,495 INFO L93 Difference]: Finished difference Result 82 states and 160 transitions. [2020-07-28 20:18:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-07-28 20:18:17,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:17,496 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:17,496 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:18:17,496 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:18:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-28 20:18:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-07-28 20:18:17,500 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 13 [2020-07-28 20:18:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:18:17,500 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-07-28 20:18:17,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 20:18:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-07-28 20:18:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 20:18:17,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 20:18:17,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 20:18:17,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-28 20:18:17,502 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 20:18:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 20:18:17,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1894970123, now seen corresponding path program 2 times [2020-07-28 20:18:17,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 20:18:17,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121259555] [2020-07-28 20:18:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 20:18:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 20:18:17,553 INFO L280 TraceCheckUtils]: 0: Hoare triple {3101#true} [215] ULTIMATE.startENTRY-->L696: Formula: (let ((.cse1 (store |v_#valid_33| 0 0))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20| 1))) (and (= 0 v_~flag1~0_41) (= 0 |v_ULTIMATE.start_main_~#t2~0.offset_17|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t1~0.base_20|) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20|)) (= 0 v_~flag2~0_56) (= 0 |v_ULTIMATE.start_main_~#t1~0.offset_17|) (= (store .cse0 |v_ULTIMATE.start_main_~#t2~0.base_20| 1) |v_#valid_31|) (= (store (store |v_#length_13| |v_ULTIMATE.start_main_~#t1~0.base_20| 4) |v_ULTIMATE.start_main_~#t2~0.base_20| 4) |v_#length_12|) (= (store |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20| (store (select |v_#memory_int_15| |v_ULTIMATE.start_main_~#t1~0.base_20|) |v_ULTIMATE.start_main_~#t1~0.offset_17| 0)) |v_#memory_int_14|) (< |v_#StackHeapBarrier_9| |v_ULTIMATE.start_main_~#t2~0.base_20|) (= 0 v_~x~0_54) (< 0 |v_#StackHeapBarrier_9|) (= 0 (select .cse1 |v_ULTIMATE.start_main_~#t1~0.base_20|)) (= 0 |v_#NULL.base_3|) (= 0 |v_#NULL.offset_3|) (= 0 v_~turn~0_70)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_9|, #valid=|v_#valid_33|, #memory_int=|v_#memory_int_15|, #length=|v_#length_13|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_7|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_17|, #NULL.offset=|v_#NULL.offset_3|, #NULL.base=|v_#NULL.base_3|, ULTIMATE.start_main_~#t1~0.base=|v_ULTIMATE.start_main_~#t1~0.base_20|, #StackHeapBarrier=|v_#StackHeapBarrier_9|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_12|, ~flag2~0=v_~flag2~0_56, #valid=|v_#valid_31|, #memory_int=|v_#memory_int_14|, ~flag1~0=v_~flag1~0_41, #length=|v_#length_12|, ~turn~0=v_~turn~0_70, ULTIMATE.start_main_~#t1~0.offset=|v_ULTIMATE.start_main_~#t1~0.offset_17|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_20|, ULTIMATE.start_main_#t~mem5=|v_ULTIMATE.start_main_#t~mem5_11|, ~x~0=v_~x~0_54, ULTIMATE.start_main_#t~mem4=|v_ULTIMATE.start_main_#t~mem4_12|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~#t2~0.offset, #NULL.offset, #NULL.base, ULTIMATE.start_main_~#t1~0.base, ULTIMATE.start_main_#res, ~flag2~0, #valid, #memory_int, ~flag1~0, #length, ~turn~0, ULTIMATE.start_main_~#t1~0.offset, ULTIMATE.start_main_~#t2~0.base, ULTIMATE.start_main_#t~mem5, ~x~0, ULTIMATE.start_main_#t~mem4] {3101#true} is VALID [2020-07-28 20:18:17,554 INFO L280 TraceCheckUtils]: 1: Hoare triple {3101#true} [175] L696-->thr1ENTRY: Formula: (and (= 0 |v_thr1Thread1of1ForFork0_#in~_.base_3|) (= 0 |v_thr1Thread1of1ForFork0_#in~_.offset_3|) (= 0 v_thr1Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_3, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_3|, thr1Thread1of1ForFork0_#res.base=|v_thr1Thread1of1ForFork0_#res.base_3|, thr1Thread1of1ForFork0_thidvar0=v_thr1Thread1of1ForFork0_thidvar0_2, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_3|, thr1Thread1of1ForFork0_#res.offset=|v_thr1Thread1of1ForFork0_#res.offset_3|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_3} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, thr1Thread1of1ForFork0_#in~_.offset, thr1Thread1of1ForFork0_#res.base, thr1Thread1of1ForFork0_thidvar0, thr1Thread1of1ForFork0_#in~_.base, thr1Thread1of1ForFork0_#res.offset, thr1Thread1of1ForFork0_~_.offset] {3101#true} is VALID [2020-07-28 20:18:17,554 INFO L280 TraceCheckUtils]: 2: Hoare triple {3101#true} [182] thr1ENTRY-->L678: Formula: (and (= |v_thr1Thread1of1ForFork0_#in~_.offset_4| v_thr1Thread1of1ForFork0_~_.offset_4) (= v_thr1Thread1of1ForFork0_~_.base_4 |v_thr1Thread1of1ForFork0_#in~_.base_4|) (= 1 v_~flag1~0_6)) InVars {thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_4|, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_4|} OutVars{thr1Thread1of1ForFork0_~_.base=v_thr1Thread1of1ForFork0_~_.base_4, thr1Thread1of1ForFork0_#in~_.offset=|v_thr1Thread1of1ForFork0_#in~_.offset_4|, ~flag1~0=v_~flag1~0_6, thr1Thread1of1ForFork0_#in~_.base=|v_thr1Thread1of1ForFork0_#in~_.base_4|, thr1Thread1of1ForFork0_~_.offset=v_thr1Thread1of1ForFork0_~_.offset_4} AuxVars[] AssignedVars[thr1Thread1of1ForFork0_~_.base, ~flag1~0, thr1Thread1of1ForFork0_~_.offset] {3101#true} is VALID [2020-07-28 20:18:17,554 INFO L280 TraceCheckUtils]: 3: Hoare triple {3101#true} [198] L696-1-->L697-1: Formula: (= (store |v_#memory_int_9| |v_ULTIMATE.start_main_~#t2~0.base_11| (store (select |v_#memory_int_9| |v_ULTIMATE.start_main_~#t2~0.base_11|) |v_ULTIMATE.start_main_~#t2~0.offset_10| 1)) |v_#memory_int_8|) InVars {#memory_int=|v_#memory_int_9|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_10|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_11|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, #memory_int=|v_#memory_int_8|, ULTIMATE.start_main_~#t2~0.offset=|v_ULTIMATE.start_main_~#t2~0.offset_10|, ULTIMATE.start_main_~#t2~0.base=|v_ULTIMATE.start_main_~#t2~0.base_11|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #memory_int] {3101#true} is VALID [2020-07-28 20:18:17,554 INFO L280 TraceCheckUtils]: 4: Hoare triple {3101#true} [177] L697-1-->thr2ENTRY: Formula: (and (= 0 |v_thr2Thread1of1ForFork1_#in~_.offset_3|) (= 0 |v_thr2Thread1of1ForFork1_#in~_.base_3|) (= 1 v_thr2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thr2Thread1of1ForFork1_thidvar0=v_thr2Thread1of1ForFork1_thidvar0_2, thr2Thread1of1ForFork1_~_.offset=v_thr2Thread1of1ForFork1_~_.offset_3, thr2Thread1of1ForFork1_#res.base=|v_thr2Thread1of1ForFork1_#res.base_3|, thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_3|, thr2Thread1of1ForFork1_#res.offset=|v_thr2Thread1of1ForFork1_#res.offset_3|, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_3|, thr2Thread1of1ForFork1_~_.base=v_thr2Thread1of1ForFork1_~_.base_3} AuxVars[] AssignedVars[thr2Thread1of1ForFork1_thidvar0, thr2Thread1of1ForFork1_~_.offset, thr2Thread1of1ForFork1_#res.base, thr2Thread1of1ForFork1_#in~_.offset, thr2Thread1of1ForFork1_#res.offset, thr2Thread1of1ForFork1_#in~_.base, thr2Thread1of1ForFork1_~_.base] {3101#true} is VALID [2020-07-28 20:18:17,556 INFO L280 TraceCheckUtils]: 5: Hoare triple {3101#true} [190] thr2ENTRY-->L687: Formula: (and (= 1 v_~flag2~0_6) (= |v_thr2Thread1of1ForFork1_#in~_.base_4| v_thr2Thread1of1ForFork1_~_.base_4) (= v_thr2Thread1of1ForFork1_~_.offset_4 |v_thr2Thread1of1ForFork1_#in~_.offset_4|)) InVars {thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_4|, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_4|} OutVars{thr2Thread1of1ForFork1_~_.offset=v_thr2Thread1of1ForFork1_~_.offset_4, thr2Thread1of1ForFork1_#in~_.offset=|v_thr2Thread1of1ForFork1_#in~_.offset_4|, ~flag2~0=v_~flag2~0_6, thr2Thread1of1ForFork1_#in~_.base=|v_thr2Thread1of1ForFork1_#in~_.base_4|, thr2Thread1of1ForFork1_~_.base=v_thr2Thread1of1ForFork1_~_.base_4} AuxVars[] AssignedVars[thr2Thread1of1ForFork1_~_.offset, ~flag2~0, thr2Thread1of1ForFork1_~_.base] {3103#(= 1 ~flag2~0)} is VALID [2020-07-28 20:18:17,556 INFO L280 TraceCheckUtils]: 6: Hoare triple {3103#(= 1 ~flag2~0)} [148] L687-->L688-2: Formula: (= v_~turn~0_1 0) InVars {} OutVars{~turn~0=v_~turn~0_1} AuxVars[] AssignedVars[~turn~0] {3103#(= 1 ~flag2~0)} is VALID [2020-07-28 20:18:17,557 INFO L280 TraceCheckUtils]: 7: Hoare triple {3103#(= 1 ~flag2~0)} [162] L678-->L679-2: Formula: (= v_~turn~0_6 1) InVars {} OutVars{~turn~0=v_~turn~0_6} AuxVars[] AssignedVars[~turn~0] {3104#(and (= 1 ~turn~0) (= 1 ~flag2~0))} is VALID [2020-07-28 20:18:17,558 INFO L280 TraceCheckUtils]: 8: Hoare triple {3104#(and (= 1 ~turn~0) (= 1 ~flag2~0))} [164] L679-2-->L679-3: Formula: (or (not (= 1 v_~flag2~0_3)) (not (= 1 v_~turn~0_4))) InVars {~turn~0=v_~turn~0_4, ~flag2~0=v_~flag2~0_3} OutVars{~turn~0=v_~turn~0_4, ~flag2~0=v_~flag2~0_3} AuxVars[] AssignedVars[] {3102#false} is VALID [2020-07-28 20:18:17,558 INFO L280 TraceCheckUtils]: 9: Hoare triple {3102#false} [166] L679-3-->L681: Formula: (= v_~x~0_4 0) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] {3102#false} is VALID [2020-07-28 20:18:17,559 INFO L280 TraceCheckUtils]: 10: Hoare triple {3102#false} [150] L688-2-->L688-3: Formula: (or (not (= 1 v_~flag1~0_1)) (not (= 0 v_~turn~0_2))) InVars {~turn~0=v_~turn~0_2, ~flag1~0=v_~flag1~0_1} OutVars{~turn~0=v_~turn~0_2, ~flag1~0=v_~flag1~0_1} AuxVars[] AssignedVars[] {3102#false} is VALID [2020-07-28 20:18:17,559 INFO L280 TraceCheckUtils]: 11: Hoare triple {3102#false} [152] L688-3-->L690: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] {3102#false} is VALID [2020-07-28 20:18:17,559 INFO L280 TraceCheckUtils]: 12: Hoare triple {3102#false} [189] L681-->thr1Err0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (not (<= v_~x~0_17 0)) InVars {~x~0=v_~x~0_17} OutVars{~x~0=v_~x~0_17} AuxVars[] AssignedVars[] {3102#false} is VALID [2020-07-28 20:18:17,560 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 20:18:17,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121259555] [2020-07-28 20:18:17,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 20:18:17,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 20:18:17,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909196050] [2020-07-28 20:18:17,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-28 20:18:17,562 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 20:18:17,562 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 20:18:17,575 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:18:17,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 20:18:17,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 20:18:17,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 20:18:17,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 20:18:17,577 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 4 states. [2020-07-28 20:18:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,618 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2020-07-28 20:18:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 20:18:17,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-28 20:18:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 20:18:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 20:18:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2020-07-28 20:18:17,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 20:18:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2020-07-28 20:18:17,620 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 19 transitions. [2020-07-28 20:18:17,642 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 20:18:17,642 INFO L225 Difference]: With dead ends: 36 [2020-07-28 20:18:17,642 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 20:18:17,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 20:18:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 20:18:17,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 20:18:17,643 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 20:18:17,643 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 20:18:17,643 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 20:18:17,644 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 20:18:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,644 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 20:18:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 20:18:17,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:17,644 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:17,644 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 20:18:17,645 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 20:18:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 20:18:17,645 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 20:18:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 20:18:17,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:17,645 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 20:18:17,645 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 20:18:17,645 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 20:18:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 20:18:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 20:18:17,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-28 20:18:17,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 20:18:17,646 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 20:18:17,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 20:18:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 20:18:17,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 20:18:17,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-28 20:18:17,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 08:18:17 BasicIcfg [2020-07-28 20:18:17,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 20:18:17,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 20:18:17,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 20:18:17,653 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 20:18:17,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 08:18:14" (3/4) ... [2020-07-28 20:18:17,657 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 20:18:17,664 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-07-28 20:18:17,665 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-07-28 20:18:17,669 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-07-28 20:18:17,669 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 20:18:17,669 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 20:18:17,712 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 20:18:17,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 20:18:17,715 INFO L168 Benchmark]: Toolchain (without parser) took 4674.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.2 MB). Free memory was 962.9 MB in the beginning and 1.1 GB in the end (delta: -109.8 MB). Peak memory consumption was 109.3 MB. Max. memory is 11.5 GB. [2020-07-28 20:18:17,716 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 20:18:17,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -159.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2020-07-28 20:18:17,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.68 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 20:18:17,718 INFO L168 Benchmark]: Boogie Preprocessor took 31.66 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 20:18:17,719 INFO L168 Benchmark]: RCFGBuilder took 496.95 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2020-07-28 20:18:17,719 INFO L168 Benchmark]: TraceAbstraction took 3238.32 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.0 MB). Peak memory consumption was 80.5 MB. Max. memory is 11.5 GB. [2020-07-28 20:18:17,720 INFO L168 Benchmark]: Witness Printer took 60.10 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 20:18:17,723 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 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 788.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -159.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.68 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.66 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 496.95 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3238.32 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.0 MB). Peak memory consumption was 80.5 MB. Max. memory is 11.5 GB. * Witness Printer took 60.10 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: 1.3s, 61 ProgramPointsBefore, 34 ProgramPointsAfterwards, 62 TransitionsBefore, 34 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 330 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1396 CheckedPairsTotal, 33 TotalNumberOfCompositions - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: 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 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 139 SDtfs, 59 SDslu, 65 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred 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: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 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...