/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:11:14,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:11:14,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:11:14,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:11:14,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:11:14,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:11:14,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:11:14,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:11:14,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:11:14,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:11:14,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:11:14,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:11:14,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:11:14,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:11:14,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:11:14,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:11:14,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:11:14,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:11:14,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:11:14,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:11:14,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:11:14,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:11:14,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:11:14,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:11:14,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 11:11:14,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:11:14,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:11:14,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:11:14,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:11:14,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:11:14,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:11:14,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:11:14,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:11:14,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:11:14,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:11:14,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:11:14,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:11:14,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:11:14,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:11:14,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:11:14,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:11:14,337 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:11:14,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:11:14,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:11:14,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:11:14,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:11:14,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:11:14,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:11:14,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:11:14,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:11:14,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:11:14,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:11:14,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:11:14,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:11:14,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:11:14,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:11:14,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:11:14,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:11:14,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:11:14,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:11:14,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:11:14,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:11:14,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:11:14,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:11:14,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:11:14,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:11:14,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:11:14,782 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:11:14,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe022_tso.oepc.i [2020-12-22 11:11:14,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43abbdf43/271cb315a38840b6ae386892c36b11a8/FLAG1299cc406 [2020-12-22 11:11:15,635 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:11:15,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe022_tso.oepc.i [2020-12-22 11:11:15,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43abbdf43/271cb315a38840b6ae386892c36b11a8/FLAG1299cc406 [2020-12-22 11:11:15,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43abbdf43/271cb315a38840b6ae386892c36b11a8 [2020-12-22 11:11:15,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:11:15,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:11:15,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:11:15,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:11:15,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:11:15,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:11:15" (1/1) ... [2020-12-22 11:11:15,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f0a80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:15, skipping insertion in model container [2020-12-22 11:11:15,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:11:15" (1/1) ... [2020-12-22 11:11:15,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:11:16,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:11:16,238 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe022_tso.oepc.i[950,963] [2020-12-22 11:11:16,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:11:16,441 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:11:16,456 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe022_tso.oepc.i[950,963] [2020-12-22 11:11:16,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:11:16,629 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:11:16,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16 WrapperNode [2020-12-22 11:11:16,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:11:16,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:11:16,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:11:16,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:11:16,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:11:16,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:11:16,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:11:16,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:11:16,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (1/1) ... [2020-12-22 11:11:16,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:11:16,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:11:16,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:11:16,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:11:16,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (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 [2020-12-22 11:11:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:11:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:11:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:11:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:11:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:11:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:11:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:11:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:11:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:11:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:11:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:11:16,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:11:16,822 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:11:17,256 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:11:17,256 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:11:17,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:17 BoogieIcfgContainer [2020-12-22 11:11:17,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:11:17,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:11:17,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:11:17,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:11:17,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:11:15" (1/3) ... [2020-12-22 11:11:17,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c0c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:11:17, skipping insertion in model container [2020-12-22 11:11:17,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:11:16" (2/3) ... [2020-12-22 11:11:17,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c0c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:11:17, skipping insertion in model container [2020-12-22 11:11:17,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:17" (3/3) ... [2020-12-22 11:11:17,268 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2020-12-22 11:11:17,276 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:11:17,277 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:11:17,282 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:11:17,283 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:11:17,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,343 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,344 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,346 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,346 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,346 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,348 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,352 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,352 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,360 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,360 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,360 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:11:17,363 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:11:17,386 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 11:11:17,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:11:17,413 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:11:17,413 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:11:17,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:11:17,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:11:17,414 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:11:17,414 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:11:17,414 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:11:17,429 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:11:17,432 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-22 11:11:17,435 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-22 11:11:17,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-22 11:11:17,481 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-22 11:11:17,482 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:11:17,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-22 11:11:17,488 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-22 11:11:20,175 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:11:20,472 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:11:20,569 INFO L131 LiptonReduction]: Checked pairs total: 1534 [2020-12-22 11:11:20,569 INFO L133 LiptonReduction]: Total number of compositions: 54 [2020-12-22 11:11:20,576 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-22 11:11:20,588 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-22 11:11:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-22 11:11:20,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 11:11:20,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:20,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 11:11:20,598 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:20,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1865753681, now seen corresponding path program 1 times [2020-12-22 11:11:20,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:20,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85797532] [2020-12-22 11:11:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:20,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85797532] [2020-12-22 11:11:20,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:20,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:11:20,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093230472] [2020-12-22 11:11:20,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:11:20,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:20,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:11:20,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:11:20,828 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-22 11:11:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:20,860 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-22 11:11:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:11:20,862 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 11:11:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:20,876 INFO L225 Difference]: With dead ends: 90 [2020-12-22 11:11:20,876 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 11:11:20,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:11:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 11:11:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-22 11:11:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 11:11:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-22 11:11:20,947 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-22 11:11:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:20,948 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-22 11:11:20,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:11:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-22 11:11:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 11:11:20,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:20,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:20,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:11:20,950 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:20,956 INFO L82 PathProgramCache]: Analyzing trace with hash -2003798512, now seen corresponding path program 1 times [2020-12-22 11:11:20,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:20,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416492924] [2020-12-22 11:11:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:21,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416492924] [2020-12-22 11:11:21,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:21,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:11:21,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879635518] [2020-12-22 11:11:21,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:11:21,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:21,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:11:21,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:11:21,159 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-22 11:11:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:21,204 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-12-22 11:11:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:11:21,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 11:11:21,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:21,207 INFO L225 Difference]: With dead ends: 82 [2020-12-22 11:11:21,207 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 11:11:21,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:21,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 11:11:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 11:11:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 11:11:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-12-22 11:11:21,231 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-12-22 11:11:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:21,231 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-12-22 11:11:21,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:11:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-12-22 11:11:21,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:11:21,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:21,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:21,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:11:21,235 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:21,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1988772591, now seen corresponding path program 1 times [2020-12-22 11:11:21,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:21,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202972268] [2020-12-22 11:11:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:21,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202972268] [2020-12-22 11:11:21,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:21,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:11:21,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8303366] [2020-12-22 11:11:21,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:21,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:21,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:21,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:21,359 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 5 states. [2020-12-22 11:11:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:21,396 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2020-12-22 11:11:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:11:21,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 11:11:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:21,401 INFO L225 Difference]: With dead ends: 78 [2020-12-22 11:11:21,401 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 11:11:21,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:11:21,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 11:11:21,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-22 11:11:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 11:11:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-12-22 11:11:21,410 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 8 [2020-12-22 11:11:21,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:21,411 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-12-22 11:11:21,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-12-22 11:11:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:11:21,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:21,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:21,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:11:21,413 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:21,414 INFO L82 PathProgramCache]: Analyzing trace with hash 567543910, now seen corresponding path program 1 times [2020-12-22 11:11:21,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:21,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276155463] [2020-12-22 11:11:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:21,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276155463] [2020-12-22 11:11:21,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:21,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:11:21,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374121440] [2020-12-22 11:11:21,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:11:21,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:21,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:11:21,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:11:21,533 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 3 states. [2020-12-22 11:11:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:21,545 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-22 11:11:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:11:21,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 11:11:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:21,546 INFO L225 Difference]: With dead ends: 33 [2020-12-22 11:11:21,546 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 11:11:21,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:11:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 11:11:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 11:11:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 11:11:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-22 11:11:21,551 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 10 [2020-12-22 11:11:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:21,551 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-22 11:11:21,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:11:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-22 11:11:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:11:21,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:21,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:21,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:11:21,553 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:21,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1481014395, now seen corresponding path program 1 times [2020-12-22 11:11:21,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:21,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990105768] [2020-12-22 11:11:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:21,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990105768] [2020-12-22 11:11:21,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:21,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:11:21,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732471936] [2020-12-22 11:11:21,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:11:21,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:21,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:11:21,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:11:21,654 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-12-22 11:11:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:21,672 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-12-22 11:11:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:11:21,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 11:11:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:21,674 INFO L225 Difference]: With dead ends: 23 [2020-12-22 11:11:21,674 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 11:11:21,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:11:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 11:11:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 11:11:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 11:11:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-12-22 11:11:21,677 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11 [2020-12-22 11:11:21,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:21,678 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-12-22 11:11:21,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:11:21,678 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-12-22 11:11:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:11:21,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:11:21,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:11:21,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:11:21,679 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:11:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:11:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1576465132, now seen corresponding path program 1 times [2020-12-22 11:11:21,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:11:21,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471315147] [2020-12-22 11:11:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:11:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:11:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:11:21,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471315147] [2020-12-22 11:11:21,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:11:21,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:11:21,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880630777] [2020-12-22 11:11:21,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:11:21,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:11:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:11:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:11:21,762 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 5 states. [2020-12-22 11:11:21,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:11:21,793 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-12-22 11:11:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:11:21,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:11:21,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:11:21,794 INFO L225 Difference]: With dead ends: 22 [2020-12-22 11:11:21,794 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:11:21,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:11:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:11:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:11:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:11:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:11:21,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-22 11:11:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:11:21,796 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:11:21,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:11:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:11:21,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:11:21,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:11:21,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:11:21 BasicIcfg [2020-12-22 11:11:21,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:11:21,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:11:21,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:11:21,802 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:11:21,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:11:17" (3/4) ... [2020-12-22 11:11:21,806 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:11:21,814 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:11:21,814 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:11:21,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-22 11:11:21,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:11:21,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:11:21,821 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:11:21,865 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe022_tso.oepc.i-witness.graphml [2020-12-22 11:11:21,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:11:21,867 INFO L168 Benchmark]: Toolchain (without parser) took 5930.85 ms. Allocated memory was 172.0 MB in the beginning and 212.9 MB in the end (delta: 40.9 MB). Free memory was 146.5 MB in the beginning and 178.6 MB in the end (delta: -32.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:21,868 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 147.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:11:21,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.20 ms. Allocated memory is still 172.0 MB. Free memory was 146.1 MB in the beginning and 150.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:21,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.80 ms. Allocated memory is still 172.0 MB. Free memory was 150.3 MB in the beginning and 148.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:21,870 INFO L168 Benchmark]: Boogie Preprocessor took 29.77 ms. Allocated memory is still 172.0 MB. Free memory was 148.2 MB in the beginning and 147.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:21,871 INFO L168 Benchmark]: RCFGBuilder took 548.16 ms. Allocated memory is still 172.0 MB. Free memory was 146.6 MB in the beginning and 126.2 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:21,872 INFO L168 Benchmark]: TraceAbstraction took 4539.79 ms. Allocated memory was 172.0 MB in the beginning and 212.9 MB in the end (delta: 40.9 MB). Free memory was 125.7 MB in the beginning and 181.2 MB in the end (delta: -55.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:11:21,872 INFO L168 Benchmark]: Witness Printer took 64.24 ms. Allocated memory is still 212.9 MB. Free memory was 181.2 MB in the beginning and 178.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:11:21,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 147.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 692.20 ms. Allocated memory is still 172.0 MB. Free memory was 146.1 MB in the beginning and 150.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.80 ms. Allocated memory is still 172.0 MB. Free memory was 150.3 MB in the beginning and 148.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.77 ms. Allocated memory is still 172.0 MB. Free memory was 148.2 MB in the beginning and 147.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 548.16 ms. Allocated memory is still 172.0 MB. Free memory was 146.6 MB in the beginning and 126.2 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4539.79 ms. Allocated memory was 172.0 MB in the beginning and 212.9 MB in the end (delta: 40.9 MB). Free memory was 125.7 MB in the beginning and 181.2 MB in the end (delta: -55.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 64.24 ms. Allocated memory is still 212.9 MB. Free memory was 181.2 MB in the beginning and 178.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 504 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 1534 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 82 SDtfs, 67 SDslu, 76 SDs, 0 SdLazy, 37 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1425 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...