/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:45:25,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:45:25,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:45:25,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:45:25,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:45:25,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:45:25,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:45:25,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:45:25,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:45:25,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:45:25,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:45:25,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:45:25,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:45:25,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:45:25,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:45:25,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:45:25,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:45:25,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:45:25,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:45:25,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:45:25,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:45:25,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:45:25,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:45:25,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:45:25,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:45:25,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:45:25,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:45:25,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:45:25,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:45:25,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:45:25,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:45:25,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:45:25,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:45:25,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:45:25,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:45:25,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:45:25,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:45:25,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:45:25,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:45:25,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:45:25,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:45:25,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 21:45:25,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:45:25,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:45:25,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:45:25,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:45:25,775 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:45:25,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:45:25,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:45:25,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:45:25,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:45:25,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:45:25,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:45:25,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:45:25,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:45:25,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:45:25,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:45:25,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:45:25,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:45:25,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:45:25,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:45:25,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:45:25,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:45:25,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:45:25,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:45:25,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:45:25,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:45:25,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:45:25,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:45:25,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:45:25,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:45:26,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:45:26,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:45:26,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:45:26,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:45:26,082 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:45:26,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-17 21:45:26,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/136ef6d2a/75f4bf706bfb484290300fb0a3d1b81b/FLAG734bde72b [2020-04-17 21:45:26,725 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:45:26,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-17 21:45:26,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/136ef6d2a/75f4bf706bfb484290300fb0a3d1b81b/FLAG734bde72b [2020-04-17 21:45:27,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/136ef6d2a/75f4bf706bfb484290300fb0a3d1b81b [2020-04-17 21:45:27,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:45:27,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:45:27,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:45:27,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:45:27,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:45:27,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ed5182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27, skipping insertion in model container [2020-04-17 21:45:27,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:45:27,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:45:27,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:45:27,560 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:45:27,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:45:27,752 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:45:27,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27 WrapperNode [2020-04-17 21:45:27,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:45:27,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:45:27,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:45:27,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:45:27,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:45:27,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:45:27,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:45:27,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:45:27,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (1/1) ... [2020-04-17 21:45:27,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:45:27,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:45:27,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:45:27,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:45:27,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (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 [2020-04-17 21:45:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:45:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:45:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:45:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:45:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:45:27,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:45:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:45:27,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:45:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:45:27,891 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:45:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:45:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:45:27,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:45:27,893 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:45:28,282 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:45:28,283 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:45:28,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:45:28 BoogieIcfgContainer [2020-04-17 21:45:28,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:45:28,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:45:28,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:45:28,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:45:28,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:45:27" (1/3) ... [2020-04-17 21:45:28,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28df32f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:45:28, skipping insertion in model container [2020-04-17 21:45:28,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:27" (2/3) ... [2020-04-17 21:45:28,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28df32f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:45:28, skipping insertion in model container [2020-04-17 21:45:28,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:45:28" (3/3) ... [2020-04-17 21:45:28,297 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-04-17 21:45:28,306 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:45:28,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:45:28,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:45:28,314 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:45:28,350 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,351 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,351 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,352 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,353 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,353 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,354 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,354 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,354 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,354 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,355 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,355 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,356 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,356 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,357 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,357 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,358 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,359 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,365 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,365 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,365 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,366 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,379 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,380 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,380 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,380 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,382 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,383 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,383 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,384 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:28,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:45:28,425 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:45:28,425 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:45:28,425 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:45:28,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:45:28,426 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:45:28,426 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:45:28,426 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:45:28,426 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:45:28,443 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 21:45:28,445 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 21:45:28,489 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 21:45:28,490 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:45:28,495 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:45:28,498 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 21:45:28,518 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 21:45:28,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:45:28,520 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:45:28,523 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:45:28,525 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:45:30,437 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-17 21:45:30,438 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 21:45:30,442 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 21:45:30,473 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 21:45:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 21:45:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:45:30,487 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:30,488 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:30,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:30,496 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-17 21:45:30,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:30,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210808588] [2020-04-17 21:45:30,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:30,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210808588] [2020-04-17 21:45:30,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:30,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:45:30,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280798532] [2020-04-17 21:45:30,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:30,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:30,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:30,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:30,881 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 21:45:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:30,950 INFO L93 Difference]: Finished difference Result 282 states and 804 transitions. [2020-04-17 21:45:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:30,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:45:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:30,969 INFO L225 Difference]: With dead ends: 282 [2020-04-17 21:45:30,970 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 21:45:30,974 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:30,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 21:45:31,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 21:45:31,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 21:45:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 596 transitions. [2020-04-17 21:45:31,044 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 596 transitions. Word has length 8 [2020-04-17 21:45:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,045 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 596 transitions. [2020-04-17 21:45:31,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 596 transitions. [2020-04-17 21:45:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:45:31,047 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,047 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,048 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,048 INFO L82 PathProgramCache]: Analyzing trace with hash -457725721, now seen corresponding path program 1 times [2020-04-17 21:45:31,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174850044] [2020-04-17 21:45:31,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174850044] [2020-04-17 21:45:31,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:31,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218526173] [2020-04-17 21:45:31,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:31,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:31,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:31,098 INFO L87 Difference]: Start difference. First operand 218 states and 596 transitions. Second operand 3 states. [2020-04-17 21:45:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:31,131 INFO L93 Difference]: Finished difference Result 250 states and 644 transitions. [2020-04-17 21:45:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:31,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 21:45:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:31,137 INFO L225 Difference]: With dead ends: 250 [2020-04-17 21:45:31,137 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 21:45:31,138 INFO L678 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 [2020-04-17 21:45:31,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 21:45:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2020-04-17 21:45:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 21:45:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 528 transitions. [2020-04-17 21:45:31,161 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 528 transitions. Word has length 10 [2020-04-17 21:45:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,161 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 528 transitions. [2020-04-17 21:45:31,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 528 transitions. [2020-04-17 21:45:31,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:45:31,163 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,163 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,163 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,164 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-17 21:45:31,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393656541] [2020-04-17 21:45:31,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393656541] [2020-04-17 21:45:31,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:45:31,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789435353] [2020-04-17 21:45:31,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:31,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:31,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:31,227 INFO L87 Difference]: Start difference. First operand 202 states and 528 transitions. Second operand 3 states. [2020-04-17 21:45:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:31,235 INFO L93 Difference]: Finished difference Result 194 states and 502 transitions. [2020-04-17 21:45:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:31,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 21:45:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:31,237 INFO L225 Difference]: With dead ends: 194 [2020-04-17 21:45:31,237 INFO L226 Difference]: Without dead ends: 194 [2020-04-17 21:45:31,238 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-17 21:45:31,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-17 21:45:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-17 21:45:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 502 transitions. [2020-04-17 21:45:31,267 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 502 transitions. Word has length 10 [2020-04-17 21:45:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,268 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 502 transitions. [2020-04-17 21:45:31,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:31,268 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 502 transitions. [2020-04-17 21:45:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:45:31,269 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,270 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 1 times [2020-04-17 21:45:31,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266733940] [2020-04-17 21:45:31,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266733940] [2020-04-17 21:45:31,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:31,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809096203] [2020-04-17 21:45:31,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:45:31,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:45:31,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:45:31,332 INFO L87 Difference]: Start difference. First operand 194 states and 502 transitions. Second operand 4 states. [2020-04-17 21:45:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:31,361 INFO L93 Difference]: Finished difference Result 278 states and 696 transitions. [2020-04-17 21:45:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:45:31,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:45:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:31,363 INFO L225 Difference]: With dead ends: 278 [2020-04-17 21:45:31,364 INFO L226 Difference]: Without dead ends: 152 [2020-04-17 21:45:31,364 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-04-17 21:45:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-04-17 21:45:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-04-17 21:45:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 370 transitions. [2020-04-17 21:45:31,374 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 370 transitions. Word has length 11 [2020-04-17 21:45:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,374 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 370 transitions. [2020-04-17 21:45:31,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:45:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 370 transitions. [2020-04-17 21:45:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:45:31,376 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,376 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,376 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1324362317, now seen corresponding path program 2 times [2020-04-17 21:45:31,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133982405] [2020-04-17 21:45:31,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133982405] [2020-04-17 21:45:31,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:45:31,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352539631] [2020-04-17 21:45:31,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:31,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:31,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:31,412 INFO L87 Difference]: Start difference. First operand 152 states and 370 transitions. Second operand 3 states. [2020-04-17 21:45:31,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:31,420 INFO L93 Difference]: Finished difference Result 150 states and 363 transitions. [2020-04-17 21:45:31,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:31,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 21:45:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:31,422 INFO L225 Difference]: With dead ends: 150 [2020-04-17 21:45:31,422 INFO L226 Difference]: Without dead ends: 150 [2020-04-17 21:45:31,422 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-17 21:45:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-17 21:45:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-17 21:45:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 363 transitions. [2020-04-17 21:45:31,430 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 363 transitions. Word has length 11 [2020-04-17 21:45:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,430 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 363 transitions. [2020-04-17 21:45:31,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 363 transitions. [2020-04-17 21:45:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:45:31,431 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,432 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,432 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1243290927, now seen corresponding path program 1 times [2020-04-17 21:45:31,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555907265] [2020-04-17 21:45:31,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555907265] [2020-04-17 21:45:31,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:31,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316850261] [2020-04-17 21:45:31,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:45:31,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:45:31,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:45:31,511 INFO L87 Difference]: Start difference. First operand 150 states and 363 transitions. Second operand 4 states. [2020-04-17 21:45:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:31,545 INFO L93 Difference]: Finished difference Result 188 states and 448 transitions. [2020-04-17 21:45:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:45:31,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 21:45:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:31,546 INFO L225 Difference]: With dead ends: 188 [2020-04-17 21:45:31,547 INFO L226 Difference]: Without dead ends: 104 [2020-04-17 21:45:31,547 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-17 21:45:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-17 21:45:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-17 21:45:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-17 21:45:31,552 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-04-17 21:45:31,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,552 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-17 21:45:31,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:45:31,553 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-17 21:45:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:45:31,556 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,556 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,556 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 1 times [2020-04-17 21:45:31,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928711361] [2020-04-17 21:45:31,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928711361] [2020-04-17 21:45:31,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:45:31,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502031891] [2020-04-17 21:45:31,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:45:31,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:45:31,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:45:31,596 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-04-17 21:45:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:31,634 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-04-17 21:45:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:45:31,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:45:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:31,636 INFO L225 Difference]: With dead ends: 128 [2020-04-17 21:45:31,636 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 21:45:31,636 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 21:45:31,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-17 21:45:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 21:45:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-17 21:45:31,639 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-04-17 21:45:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,640 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-17 21:45:31,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:45:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-17 21:45:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:45:31,641 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,641 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,641 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-04-17 21:45:31,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151526426] [2020-04-17 21:45:31,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151526426] [2020-04-17 21:45:31,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:31,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604277362] [2020-04-17 21:45:31,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:45:31,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:45:31,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:45:31,703 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-17 21:45:31,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:31,741 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-17 21:45:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:45:31,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:45:31,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:31,742 INFO L225 Difference]: With dead ends: 81 [2020-04-17 21:45:31,742 INFO L226 Difference]: Without dead ends: 59 [2020-04-17 21:45:31,743 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-17 21:45:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-17 21:45:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-17 21:45:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-17 21:45:31,746 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-17 21:45:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,747 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-17 21:45:31,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:45:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-17 21:45:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:45:31,747 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,748 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,748 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-17 21:45:31,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765122091] [2020-04-17 21:45:31,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765122091] [2020-04-17 21:45:31,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:45:31,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233358394] [2020-04-17 21:45:31,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:45:31,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:45:31,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:31,845 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-17 21:45:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:31,890 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-17 21:45:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:45:31,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:45:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:31,891 INFO L225 Difference]: With dead ends: 60 [2020-04-17 21:45:31,892 INFO L226 Difference]: Without dead ends: 45 [2020-04-17 21:45:31,892 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:45:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-17 21:45:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-17 21:45:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-17 21:45:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-17 21:45:31,895 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-17 21:45:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:31,895 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-17 21:45:31,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:45:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-17 21:45:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 21:45:31,896 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:31,896 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:31,896 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:31,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:31,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-17 21:45:31,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:31,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795405992] [2020-04-17 21:45:31,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:31,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795405992] [2020-04-17 21:45:31,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:31,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:45:31,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939717405] [2020-04-17 21:45:31,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:45:31,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:31,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:45:31,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:45:31,987 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-17 21:45:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:32,048 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-17 21:45:32,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:45:32,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 21:45:32,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:32,049 INFO L225 Difference]: With dead ends: 42 [2020-04-17 21:45:32,049 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 21:45:32,050 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 21:45:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 21:45:32,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 21:45:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 21:45:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 21:45:32,051 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-17 21:45:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:32,052 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 21:45:32,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:45:32,052 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 21:45:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 21:45:32,053 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:32,053 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:32,053 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:32,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:32,053 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-17 21:45:32,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:32,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661016743] [2020-04-17 21:45:32,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:32,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661016743] [2020-04-17 21:45:32,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:32,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:32,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302791459] [2020-04-17 21:45:32,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:32,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:32,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:32,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:32,100 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-04-17 21:45:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:32,106 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 21:45:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:32,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 21:45:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:32,107 INFO L225 Difference]: With dead ends: 35 [2020-04-17 21:45:32,107 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:45:32,107 INFO L678 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 [2020-04-17 21:45:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:45:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:45:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:45:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:45:32,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 21:45:32,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:32,108 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:45:32,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:45:32,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:45:32,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:45:32 BasicIcfg [2020-04-17 21:45:32,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:45:32,115 INFO L168 Benchmark]: Toolchain (without parser) took 5082.40 ms. Allocated memory was 137.4 MB in the beginning and 252.2 MB in the end (delta: 114.8 MB). Free memory was 100.3 MB in the beginning and 164.9 MB in the end (delta: -64.7 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:32,116 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 21:45:32,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.23 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 98.5 MB in the beginning and 156.4 MB in the end (delta: -57.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:32,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.25 ms. Allocated memory is still 199.8 MB. Free memory was 156.4 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:32,118 INFO L168 Benchmark]: Boogie Preprocessor took 27.11 ms. Allocated memory is still 199.8 MB. Free memory was 154.4 MB in the beginning and 153.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:32,119 INFO L168 Benchmark]: RCFGBuilder took 458.50 ms. Allocated memory is still 199.8 MB. Free memory was 153.0 MB in the beginning and 130.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:32,120 INFO L168 Benchmark]: TraceAbstraction took 3824.32 ms. Allocated memory was 199.8 MB in the beginning and 252.2 MB in the end (delta: 52.4 MB). Free memory was 130.6 MB in the beginning and 164.9 MB in the end (delta: -34.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:32,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.23 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 98.5 MB in the beginning and 156.4 MB in the end (delta: -57.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.25 ms. Allocated memory is still 199.8 MB. Free memory was 156.4 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.11 ms. Allocated memory is still 199.8 MB. Free memory was 154.4 MB in the beginning and 153.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.50 ms. Allocated memory is still 199.8 MB. Free memory was 153.0 MB in the beginning and 130.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3824.32 ms. Allocated memory was 199.8 MB in the beginning and 252.2 MB in the end (delta: 52.4 MB). Free memory was 130.6 MB in the beginning and 164.9 MB in the end (delta: -34.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 199 SDtfs, 127 SDslu, 194 SDs, 0 SdLazy, 129 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 4185 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...