/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-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:17:57,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:17:57,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:17:57,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:17:57,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:17:57,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:17:57,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:17:57,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:17:57,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:17:57,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:17:57,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:17:57,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:17:57,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:17:57,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:17:57,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:17:57,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:17:57,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:17:57,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:17:57,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:17:57,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:17:57,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:17:57,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:17:57,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:17:57,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:17:57,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:17:57,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:17:57,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:17:57,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:17:57,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:17:57,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:17:57,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:17:57,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:17:57,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:17:57,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:17:57,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:17:57,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:17:57,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:17:57,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:17:57,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:17:57,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:17:57,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:17:57,998 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-McrStrategy.epf [2020-04-18 11:17:58,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:17:58,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:17:58,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:17:58,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:17:58,032 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:17:58,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:17:58,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:17:58,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:17:58,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:17:58,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:17:58,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:17:58,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:17:58,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:17:58,034 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:17:58,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:17:58,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:17:58,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:17:58,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:17:58,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:17:58,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:17:58,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:17:58,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:17:58,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:17:58,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:17:58,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:17:58,039 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:17:58,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:17:58,040 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:17:58,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:17:58,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:17:58,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:17:58,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:17:58,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:17:58,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:17:58,318 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:17:58,319 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-04-18 11:17:58,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6089806ca/79ce78198b974c7abd6c3aea0974dfb7/FLAG0307a0249 [2020-04-18 11:17:58,961 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:17:58,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-04-18 11:17:58,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6089806ca/79ce78198b974c7abd6c3aea0974dfb7/FLAG0307a0249 [2020-04-18 11:17:59,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6089806ca/79ce78198b974c7abd6c3aea0974dfb7 [2020-04-18 11:17:59,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:17:59,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:17:59,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:17:59,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:17:59,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:17:59,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:17:59" (1/1) ... [2020-04-18 11:17:59,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6b4f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:17:59, skipping insertion in model container [2020-04-18 11:17:59,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:17:59" (1/1) ... [2020-04-18 11:17:59,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:17:59,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:17:59,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:17:59,897 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:17:59,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:18:00,054 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:18:00,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00 WrapperNode [2020-04-18 11:18:00,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:18:00,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:18:00,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:18:00,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:18:00,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:18:00,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:18:00,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:18:00,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:18:00,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (1/1) ... [2020-04-18 11:18:00,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:18:00,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:18:00,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:18:00,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:18:00,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (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 [2020-04-18 11:18:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:18:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:18:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:18:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:18:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:18:00,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:18:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:18:00,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:18:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:18:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:18:00,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:18:00,201 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:18:00,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:18:00,511 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:18:00,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:18:00 BoogieIcfgContainer [2020-04-18 11:18:00,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:18:00,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:18:00,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:18:00,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:18:00,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:17:59" (1/3) ... [2020-04-18 11:18:00,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fab8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:18:00, skipping insertion in model container [2020-04-18 11:18:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:18:00" (2/3) ... [2020-04-18 11:18:00,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fab8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:18:00, skipping insertion in model container [2020-04-18 11:18:00,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:18:00" (3/3) ... [2020-04-18 11:18:00,524 INFO L109 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-04-18 11:18:00,534 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:18:00,535 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:18:00,542 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:18:00,544 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:18:00,569 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,570 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,570 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,570 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,571 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,574 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,575 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,575 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,575 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,576 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,576 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,576 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,585 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,586 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,586 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,587 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,607 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,607 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,607 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,608 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:18:00,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 11:18:00,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:18:00,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:18:00,636 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:18:00,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:18:00,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:18:00,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:18:00,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:18:00,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:18:00,651 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-04-18 11:18:00,653 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-04-18 11:18:00,690 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-04-18 11:18:00,690 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:18:00,695 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 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. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:18:00,697 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-04-18 11:18:00,719 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-04-18 11:18:00,719 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:18:00,720 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 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. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:18:00,722 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 11:18:00,723 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:18:02,359 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1300 [2020-04-18 11:18:02,359 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-04-18 11:18:02,363 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 11:18:02,376 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 11:18:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:18:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:18:02,385 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:18:02,386 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:18:02,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:18:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-04-18 11:18:02,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:18:02,400 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2092283486] [2020-04-18 11:18:02,415 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:02,427 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:18:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:18:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:18:02,429 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:18:02,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:02,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 2 times [2020-04-18 11:18:02,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:02,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084576260] [2020-04-18 11:18:02,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:02,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084576260] [2020-04-18 11:18:02,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:02,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:18:02,670 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:02,672 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:02,674 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:18:02,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:02,689 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:18:02,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:18:02,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:18:02,696 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 11:18:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:02,699 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:18:02,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:18:02,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:18:02,700 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2092283486] [2020-04-18 11:18:02,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:18:02,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:18:02,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2092283486] [2020-04-18 11:18:02,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:18:02,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:18:02,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:18:02,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:18:02,708 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 11:18:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:02,732 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-18 11:18:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:18:02,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 11:18:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:18:02,744 INFO L225 Difference]: With dead ends: 72 [2020-04-18 11:18:02,744 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 11:18:02,746 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:18:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 11:18:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 11:18:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 11:18:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-18 11:18:02,810 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-18 11:18:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:18:02,811 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-18 11:18:02,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:18:02,816 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-18 11:18:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:18:02,817 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:18:02,824 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:18:02,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:18:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:02,826 INFO L82 PathProgramCache]: Analyzing trace with hash 359297998, now seen corresponding path program 1 times [2020-04-18 11:18:02,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:18:02,827 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1397797562] [2020-04-18 11:18:02,827 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:02,828 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 11 transitions. [2020-04-18 11:18:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:18:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:18:02,829 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:18:02,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:02,829 INFO L82 PathProgramCache]: Analyzing trace with hash 359297998, now seen corresponding path program 2 times [2020-04-18 11:18:02,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:02,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682830296] [2020-04-18 11:18:02,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:02,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682830296] [2020-04-18 11:18:02,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:02,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:18:02,892 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:02,893 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:02,895 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 9 transitions. [2020-04-18 11:18:02,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:02,900 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:18:02,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:18:02,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:18:02,901 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 11:18:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:02,902 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-04-18 11:18:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-04-18 11:18:02,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:18:02,902 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1397797562] [2020-04-18 11:18:02,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:18:02,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:18:02,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1397797562] [2020-04-18 11:18:02,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:18:02,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:18:02,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:18:02,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:18:02,905 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-04-18 11:18:02,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:02,912 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-04-18 11:18:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:18:02,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 11:18:02,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:18:02,914 INFO L225 Difference]: With dead ends: 55 [2020-04-18 11:18:02,914 INFO L226 Difference]: Without dead ends: 55 [2020-04-18 11:18:02,916 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:18:02,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-18 11:18:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-18 11:18:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-18 11:18:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-04-18 11:18:02,924 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-04-18 11:18:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:18:02,924 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-04-18 11:18:02,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:18:02,925 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-04-18 11:18:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:18:02,925 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:18:02,926 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:18:02,926 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:18:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-04-18 11:18:02,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:18:02,927 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1390529059] [2020-04-18 11:18:02,927 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:02,928 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 28 transitions. [2020-04-18 11:18:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-04-18 11:18:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:18:02,929 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:18:02,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:02,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 2 times [2020-04-18 11:18:02,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:02,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782982286] [2020-04-18 11:18:02,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:03,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782982286] [2020-04-18 11:18:03,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:03,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:18:03,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:03,037 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,038 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 21 transitions. [2020-04-18 11:18:03,038 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:03,056 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:18:03,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:18:03,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:18:03,057 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2020-04-18 11:18:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,068 INFO L93 Difference]: Finished difference Result 18 states and 28 transitions. [2020-04-18 11:18:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2020-04-18 11:18:03,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:18:03,069 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1390529059] [2020-04-18 11:18:03,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:18:03,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:18:03,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1390529059] [2020-04-18 11:18:03,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:18:03,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:18:03,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:18:03,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:18:03,071 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-04-18 11:18:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,092 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-04-18 11:18:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:18:03,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-18 11:18:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:18:03,094 INFO L225 Difference]: With dead ends: 56 [2020-04-18 11:18:03,094 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 11:18:03,094 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:18:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 11:18:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 11:18:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 11:18:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 11:18:03,100 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-04-18 11:18:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:18:03,100 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 11:18:03,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:18:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 11:18:03,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:18:03,101 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:18:03,101 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:18:03,101 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:18:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-04-18 11:18:03,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:18:03,102 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [609935857] [2020-04-18 11:18:03,103 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,104 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 33 transitions. [2020-04-18 11:18:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 11:18:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:18:03,105 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:18:03,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,105 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 2 times [2020-04-18 11:18:03,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:03,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348061681] [2020-04-18 11:18:03,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:03,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348061681] [2020-04-18 11:18:03,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:03,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:18:03,177 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:03,177 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,179 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:18:03,179 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:03,209 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:18:03,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:18:03,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:18:03,210 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-04-18 11:18:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,221 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2020-04-18 11:18:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-04-18 11:18:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:18:03,222 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:18:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,222 INFO L82 PathProgramCache]: Analyzing trace with hash -442629835, now seen corresponding path program 3 times [2020-04-18 11:18:03,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:03,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458034913] [2020-04-18 11:18:03,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:03,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458034913] [2020-04-18 11:18:03,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:03,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:18:03,256 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:03,256 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,257 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:18:03,257 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:03,264 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:18:03,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:18:03,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:18:03,264 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 3 states. [2020-04-18 11:18:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,274 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2020-04-18 11:18:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-04-18 11:18:03,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:18:03,275 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [609935857] [2020-04-18 11:18:03,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:18:03,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:18:03,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [609935857] [2020-04-18 11:18:03,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:18:03,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:18:03,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:18:03,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:18:03,278 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-04-18 11:18:03,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,299 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-04-18 11:18:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:18:03,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:18:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:18:03,301 INFO L225 Difference]: With dead ends: 51 [2020-04-18 11:18:03,301 INFO L226 Difference]: Without dead ends: 41 [2020-04-18 11:18:03,301 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:18:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-04-18 11:18:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-04-18 11:18:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-04-18 11:18:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-04-18 11:18:03,309 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-04-18 11:18:03,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:18:03,309 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-04-18 11:18:03,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:18:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-04-18 11:18:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:18:03,310 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:18:03,310 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:18:03,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:18:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-04-18 11:18:03,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:18:03,311 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [877663266] [2020-04-18 11:18:03,311 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,312 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:18:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:18:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:18:03,313 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:18:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1687996405, now seen corresponding path program 2 times [2020-04-18 11:18:03,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:03,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238672497] [2020-04-18 11:18:03,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:03,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238672497] [2020-04-18 11:18:03,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:03,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:18:03,348 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:03,349 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,350 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 11:18:03,350 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:03,353 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:18:03,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:18:03,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:18:03,354 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:18:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,357 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 11:18:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 11:18:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:18:03,357 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:18:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1687948045, now seen corresponding path program 3 times [2020-04-18 11:18:03,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:03,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999465459] [2020-04-18 11:18:03,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:03,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999465459] [2020-04-18 11:18:03,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:03,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:18:03,381 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:03,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,383 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:18:03,383 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:03,389 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:18:03,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:18:03,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:18:03,390 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2020-04-18 11:18:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,394 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 11:18:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 11:18:03,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:18:03,394 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [877663266] [2020-04-18 11:18:03,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:18:03,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:18:03,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [877663266] [2020-04-18 11:18:03,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:18:03,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:18:03,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:18:03,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:18:03,396 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 4 states. [2020-04-18 11:18:03,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,421 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-04-18 11:18:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:18:03,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:18:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:18:03,422 INFO L225 Difference]: With dead ends: 42 [2020-04-18 11:18:03,422 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 11:18:03,423 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:18:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 11:18:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-04-18 11:18:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-18 11:18:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-04-18 11:18:03,426 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-04-18 11:18:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:18:03,427 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-04-18 11:18:03,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:18:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-04-18 11:18:03,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:18:03,427 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:18:03,428 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:18:03,428 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:18:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,428 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-04-18 11:18:03,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:18:03,429 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [849400287] [2020-04-18 11:18:03,429 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,430 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 62 transitions. [2020-04-18 11:18:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:18:03,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:18:03,431 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:18:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,431 INFO L82 PathProgramCache]: Analyzing trace with hash -856780571, now seen corresponding path program 2 times [2020-04-18 11:18:03,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:03,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084175315] [2020-04-18 11:18:03,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:03,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084175315] [2020-04-18 11:18:03,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:03,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:18:03,468 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:03,468 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,471 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 11:18:03,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:03,513 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:18:03,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:18:03,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:18:03,514 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 11:18:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,527 INFO L93 Difference]: Finished difference Result 44 states and 73 transitions. [2020-04-18 11:18:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 73 transitions. [2020-04-18 11:18:03,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:18:03,528 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:18:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,529 INFO L82 PathProgramCache]: Analyzing trace with hash -855336731, now seen corresponding path program 3 times [2020-04-18 11:18:03,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:03,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316850261] [2020-04-18 11:18:03,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:03,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316850261] [2020-04-18 11:18:03,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:03,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:18:03,641 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:03,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,645 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 38 transitions. [2020-04-18 11:18:03,645 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:03,660 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:18:03,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:18:03,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:18:03,661 INFO L87 Difference]: Start difference. First operand 44 states and 73 transitions. Second operand 4 states. [2020-04-18 11:18:03,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,680 INFO L93 Difference]: Finished difference Result 50 states and 78 transitions. [2020-04-18 11:18:03,680 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 78 transitions. [2020-04-18 11:18:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:18:03,681 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:18:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:18:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 4 times [2020-04-18 11:18:03,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:18:03,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333878651] [2020-04-18 11:18:03,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:18:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:18:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:18:03,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333878651] [2020-04-18 11:18:03,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:18:03,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:18:03,778 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:18:03,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:18:03,781 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-04-18 11:18:03,781 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:18:03,826 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:18:03,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:18:03,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:18:03,827 INFO L87 Difference]: Start difference. First operand 50 states and 78 transitions. Second operand 6 states. [2020-04-18 11:18:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,854 INFO L93 Difference]: Finished difference Result 50 states and 78 transitions. [2020-04-18 11:18:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 78 transitions. [2020-04-18 11:18:03,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:18:03,855 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [849400287] [2020-04-18 11:18:03,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:18:03,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:18:03,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [849400287] [2020-04-18 11:18:03,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:18:03,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:18:03,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:18:03,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:18:03,857 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 8 states. [2020-04-18 11:18:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:18:03,936 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-04-18 11:18:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:18:03,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-04-18 11:18:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:18:03,940 INFO L225 Difference]: With dead ends: 25 [2020-04-18 11:18:03,941 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:18:03,943 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:18:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:18:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:18:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:18:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:18:03,945 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-04-18 11:18:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:18:03,947 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:18:03,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:18:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:18:03,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:18:03,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:18:03 BasicIcfg [2020-04-18 11:18:03,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:18:03,962 INFO L168 Benchmark]: Toolchain (without parser) took 4695.27 ms. Allocated memory was 138.9 MB in the beginning and 245.4 MB in the end (delta: 106.4 MB). Free memory was 101.0 MB in the beginning and 181.6 MB in the end (delta: -80.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:18:03,963 INFO L168 Benchmark]: CDTParser took 1.49 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 11:18:03,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.23 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 159.9 MB in the end (delta: -60.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:18:03,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.52 ms. Allocated memory is still 202.9 MB. Free memory was 159.9 MB in the beginning and 158.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:18:03,969 INFO L168 Benchmark]: Boogie Preprocessor took 22.43 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 156.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:18:03,970 INFO L168 Benchmark]: RCFGBuilder took 380.86 ms. Allocated memory is still 202.9 MB. Free memory was 156.7 MB in the beginning and 137.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:18:03,971 INFO L168 Benchmark]: TraceAbstraction took 3442.75 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 137.0 MB in the beginning and 181.6 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:18:03,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.49 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 768.23 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 159.9 MB in the end (delta: -60.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.52 ms. Allocated memory is still 202.9 MB. Free memory was 159.9 MB in the beginning and 158.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.43 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 156.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.86 ms. Allocated memory is still 202.9 MB. Free memory was 156.7 MB in the beginning and 137.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3442.75 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 137.0 MB in the beginning and 181.6 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 59 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 382 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1300 CheckedPairsTotal, 46 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 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 82 SDtfs, 35 SDslu, 96 SDs, 0 SdLazy, 59 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...