/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 14:53:35,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 14:53:35,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 14:53:35,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 14:53:35,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 14:53:35,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 14:53:35,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 14:53:35,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 14:53:35,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 14:53:35,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 14:53:35,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 14:53:35,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 14:53:35,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 14:53:35,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 14:53:35,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 14:53:35,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 14:53:35,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 14:53:35,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 14:53:35,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 14:53:35,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 14:53:35,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 14:53:35,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 14:53:35,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 14:53:35,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 14:53:35,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 14:53:35,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 14:53:35,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 14:53:35,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 14:53:35,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 14:53:35,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 14:53:35,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 14:53:35,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 14:53:35,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 14:53:35,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 14:53:35,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 14:53:35,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 14:53:35,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 14:53:35,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 14:53:35,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 14:53:35,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 14:53:35,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 14:53:35,967 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-VariableLbe-McrStrategy.epf [2020-04-18 14:53:35,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 14:53:35,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 14:53:35,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 14:53:35,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 14:53:35,993 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 14:53:35,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 14:53:35,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 14:53:35,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 14:53:35,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 14:53:35,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 14:53:35,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 14:53:35,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 14:53:35,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 14:53:35,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 14:53:35,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 14:53:35,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 14:53:35,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 14:53:35,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 14:53:35,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 14:53:35,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 14:53:35,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 14:53:35,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 14:53:35,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 14:53:35,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 14:53:35,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 14:53:35,999 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 14:53:35,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 14:53:35,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 14:53:35,999 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 14:53:35,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 14:53:36,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 14:53:36,296 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 14:53:36,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 14:53:36,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 14:53:36,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 14:53:36,324 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 14:53:36,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-18 14:53:36,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a26a9dfa/928a27c5111a447c967d5bf8ffc78872/FLAG8bddcc8aa [2020-04-18 14:53:36,966 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 14:53:36,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-18 14:53:36,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a26a9dfa/928a27c5111a447c967d5bf8ffc78872/FLAG8bddcc8aa [2020-04-18 14:53:37,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a26a9dfa/928a27c5111a447c967d5bf8ffc78872 [2020-04-18 14:53:37,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 14:53:37,268 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 14:53:37,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 14:53:37,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 14:53:37,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 14:53:37,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:37,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e71aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37, skipping insertion in model container [2020-04-18 14:53:37,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:37,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 14:53:37,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 14:53:37,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:53:37,827 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 14:53:37,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:53:37,990 INFO L208 MainTranslator]: Completed translation [2020-04-18 14:53:37,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37 WrapperNode [2020-04-18 14:53:37,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 14:53:37,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 14:53:37,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 14:53:37,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 14:53:38,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 14:53:38,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 14:53:38,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 14:53:38,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 14:53:38,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (1/1) ... [2020-04-18 14:53:38,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 14:53:38,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 14:53:38,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 14:53:38,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 14:53:38,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (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 14:53:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 14:53:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 14:53:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 14:53:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 14:53:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 14:53:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 14:53:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 14:53:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 14:53:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 14:53:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 14:53:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 14:53:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 14:53:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 14:53:38,163 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 14:53:38,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 14:53:38,581 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 14:53:38,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:53:38 BoogieIcfgContainer [2020-04-18 14:53:38,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 14:53:38,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 14:53:38,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 14:53:38,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 14:53:38,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:53:37" (1/3) ... [2020-04-18 14:53:38,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f16df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:53:38, skipping insertion in model container [2020-04-18 14:53:38,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:37" (2/3) ... [2020-04-18 14:53:38,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f16df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:53:38, skipping insertion in model container [2020-04-18 14:53:38,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:53:38" (3/3) ... [2020-04-18 14:53:38,595 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-04-18 14:53:38,607 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 14:53:38,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 14:53:38,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 14:53:38,617 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 14:53:38,651 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,652 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,652 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,652 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,653 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,653 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,654 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,655 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,655 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,655 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,656 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,656 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,658 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,658 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,658 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,659 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,660 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,661 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,667 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,667 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,667 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,668 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,682 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,683 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,683 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,683 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,687 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,688 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,689 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,689 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:53:38,709 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 14:53:38,729 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 14:53:38,729 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 14:53:38,729 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 14:53:38,730 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 14:53:38,730 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 14:53:38,730 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 14:53:38,730 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 14:53:38,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 14:53:38,747 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 14:53:38,750 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 14:53:38,792 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 14:53:38,793 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:53:38,798 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 14:53:38,801 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 14:53:38,823 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 14:53:38,824 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:53:38,824 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 14:53:38,826 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 14:53:38,828 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 14:53:40,264 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 14:53:40,429 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-18 14:53:40,429 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 14:53:40,433 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 14:53:40,460 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 14:53:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 14:53:40,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:53:40,471 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:40,472 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:40,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:40,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-18 14:53:40,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:40,487 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [450403534] [2020-04-18 14:53:40,501 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:40,514 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:53:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 14:53:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:53:40,516 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:40,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:40,517 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 2 times [2020-04-18 14:53:40,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:40,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366635575] [2020-04-18 14:53:40,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:40,760 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 14:53:40,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366635575] [2020-04-18 14:53:40,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:40,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 14:53:40,765 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:40,767 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:40,774 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:53:40,774 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:40,785 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:40,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:40,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:40,791 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 14:53:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:40,796 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 14:53:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 14:53:40,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:40,798 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [450403534] [2020-04-18 14:53:40,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:40,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 14:53:40,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [450403534] [2020-04-18 14:53:40,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 14:53:40,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:40,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:40,806 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 14:53:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:40,863 INFO L93 Difference]: Finished difference Result 282 states and 804 transitions. [2020-04-18 14:53:40,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 14:53:40,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 14:53:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:40,898 INFO L225 Difference]: With dead ends: 282 [2020-04-18 14:53:40,898 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 14:53:40,900 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 14:53:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 14:53:40,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 14:53:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 14:53:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 596 transitions. [2020-04-18 14:53:40,980 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 596 transitions. Word has length 8 [2020-04-18 14:53:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:40,982 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 596 transitions. [2020-04-18 14:53:40,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 14:53:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 596 transitions. [2020-04-18 14:53:40,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:53:40,984 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:40,984 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:40,985 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:40,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:40,985 INFO L82 PathProgramCache]: Analyzing trace with hash -457725721, now seen corresponding path program 1 times [2020-04-18 14:53:40,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:40,986 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [722706037] [2020-04-18 14:53:40,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:40,987 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 14:53:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 14:53:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:53:40,988 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:40,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:40,989 INFO L82 PathProgramCache]: Analyzing trace with hash -457725721, now seen corresponding path program 2 times [2020-04-18 14:53:40,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:40,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312735481] [2020-04-18 14:53:40,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,104 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 14:53:41,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312735481] [2020-04-18 14:53:41,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:41,105 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,107 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,109 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 14:53:41,109 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,116 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:41,117 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 14:53:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,125 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2020-04-18 14:53:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-04-18 14:53:41,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:53:41,126 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:53:41,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,126 INFO L82 PathProgramCache]: Analyzing trace with hash -409878001, now seen corresponding path program 3 times [2020-04-18 14:53:41,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:41,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128608066] [2020-04-18 14:53:41,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,180 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 14:53:41,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128608066] [2020-04-18 14:53:41,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:41,181 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,184 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 14:53:41,185 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,191 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:53:41,194 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 3 states. [2020-04-18 14:53:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,200 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2020-04-18 14:53:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-04-18 14:53:41,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:41,201 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [722706037] [2020-04-18 14:53:41,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:41,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:53:41,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [722706037] [2020-04-18 14:53:41,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 14:53:41,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:41,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:41,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:53:41,205 INFO L87 Difference]: Start difference. First operand 218 states and 596 transitions. Second operand 4 states. [2020-04-18 14:53:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,230 INFO L93 Difference]: Finished difference Result 250 states and 644 transitions. [2020-04-18 14:53:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 14:53:41,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 14:53:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:41,234 INFO L225 Difference]: With dead ends: 250 [2020-04-18 14:53:41,236 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 14:53:41,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 14:53:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 14:53:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2020-04-18 14:53:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 14:53:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 528 transitions. [2020-04-18 14:53:41,270 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 528 transitions. Word has length 10 [2020-04-18 14:53:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:41,271 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 528 transitions. [2020-04-18 14:53:41,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 14:53:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 528 transitions. [2020-04-18 14:53:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:53:41,274 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:41,274 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:41,275 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,275 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-18 14:53:41,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:41,276 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1470154139] [2020-04-18 14:53:41,276 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,277 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 14:53:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 14:53:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:53:41,278 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 42723214, now seen corresponding path program 2 times [2020-04-18 14:53:41,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:41,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016097832] [2020-04-18 14:53:41,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,318 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 14:53:41,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016097832] [2020-04-18 14:53:41,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:41,319 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,320 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,321 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 14:53:41,321 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,332 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:41,333 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 14:53:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,339 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 14:53:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 14:53:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:53:41,340 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:53:41,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 3 times [2020-04-18 14:53:41,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:41,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915992664] [2020-04-18 14:53:41,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,376 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 14:53:41,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915992664] [2020-04-18 14:53:41,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 14:53:41,377 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,378 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,379 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 14:53:41,379 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:53:41,385 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 3 states. [2020-04-18 14:53:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,386 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 14:53:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 14:53:41,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:41,386 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1470154139] [2020-04-18 14:53:41,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:41,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 14:53:41,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1470154139] [2020-04-18 14:53:41,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 14:53:41,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:41,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:41,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:53:41,388 INFO L87 Difference]: Start difference. First operand 202 states and 528 transitions. Second operand 4 states. [2020-04-18 14:53:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,417 INFO L93 Difference]: Finished difference Result 198 states and 514 transitions. [2020-04-18 14:53:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 14:53:41,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 14:53:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:41,420 INFO L225 Difference]: With dead ends: 198 [2020-04-18 14:53:41,420 INFO L226 Difference]: Without dead ends: 198 [2020-04-18 14:53:41,420 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 14:53:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-04-18 14:53:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-04-18 14:53:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-18 14:53:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 514 transitions. [2020-04-18 14:53:41,434 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 514 transitions. Word has length 10 [2020-04-18 14:53:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:41,435 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 514 transitions. [2020-04-18 14:53:41,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 14:53:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 514 transitions. [2020-04-18 14:53:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:53:41,436 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:41,436 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:41,436 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash 178653510, now seen corresponding path program 1 times [2020-04-18 14:53:41,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:41,437 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [202519521] [2020-04-18 14:53:41,438 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,439 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 43 transitions. [2020-04-18 14:53:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 14:53:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:53:41,440 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:41,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,440 INFO L82 PathProgramCache]: Analyzing trace with hash 178655340, now seen corresponding path program 2 times [2020-04-18 14:53:41,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:41,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78882148] [2020-04-18 14:53:41,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,505 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 14:53:41,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78882148] [2020-04-18 14:53:41,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:41,507 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,508 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,510 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2020-04-18 14:53:41,510 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,513 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:41,514 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-04-18 14:53:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,517 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2020-04-18 14:53:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2020-04-18 14:53:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:53:41,518 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:53:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,519 INFO L82 PathProgramCache]: Analyzing trace with hash 178653510, now seen corresponding path program 3 times [2020-04-18 14:53:41,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:41,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749651515] [2020-04-18 14:53:41,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,592 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 14:53:41,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749651515] [2020-04-18 14:53:41,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 14:53:41,593 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,594 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,597 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-04-18 14:53:41,598 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,611 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:53:41,612 INFO L87 Difference]: Start difference. First operand 28 states and 44 transitions. Second operand 3 states. [2020-04-18 14:53:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,613 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2020-04-18 14:53:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2020-04-18 14:53:41,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:41,614 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [202519521] [2020-04-18 14:53:41,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:41,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 14:53:41,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [202519521] [2020-04-18 14:53:41,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 14:53:41,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:41,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:41,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:53:41,617 INFO L87 Difference]: Start difference. First operand 198 states and 514 transitions. Second operand 4 states. [2020-04-18 14:53:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,659 INFO L93 Difference]: Finished difference Result 192 states and 495 transitions. [2020-04-18 14:53:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 14:53:41,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 14:53:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:41,665 INFO L225 Difference]: With dead ends: 192 [2020-04-18 14:53:41,665 INFO L226 Difference]: Without dead ends: 192 [2020-04-18 14:53:41,666 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 14:53:41,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-04-18 14:53:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-04-18 14:53:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-04-18 14:53:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 495 transitions. [2020-04-18 14:53:41,690 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 495 transitions. Word has length 11 [2020-04-18 14:53:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:41,690 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 495 transitions. [2020-04-18 14:53:41,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 14:53:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 495 transitions. [2020-04-18 14:53:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:53:41,692 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:41,692 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:41,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,695 INFO L82 PathProgramCache]: Analyzing trace with hash 707253593, now seen corresponding path program 1 times [2020-04-18 14:53:41,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:41,695 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1673623052] [2020-04-18 14:53:41,696 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,696 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 76 transitions. [2020-04-18 14:53:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-04-18 14:53:41,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:53:41,701 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash 707255423, now seen corresponding path program 2 times [2020-04-18 14:53:41,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:41,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846515634] [2020-04-18 14:53:41,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,777 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 14:53:41,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846515634] [2020-04-18 14:53:41,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:41,779 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,780 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,784 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 14:53:41,786 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,795 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:41,796 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-04-18 14:53:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,809 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2020-04-18 14:53:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 78 transitions. [2020-04-18 14:53:41,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:53:41,810 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:53:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,810 INFO L82 PathProgramCache]: Analyzing trace with hash 707253593, now seen corresponding path program 3 times [2020-04-18 14:53:41,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:41,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534251603] [2020-04-18 14:53:41,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,904 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 14:53:41,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534251603] [2020-04-18 14:53:41,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:41,906 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,907 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,911 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 51 transitions. [2020-04-18 14:53:41,911 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,919 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:53:41,920 INFO L87 Difference]: Start difference. First operand 44 states and 78 transitions. Second operand 3 states. [2020-04-18 14:53:41,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,930 INFO L93 Difference]: Finished difference Result 48 states and 80 transitions. [2020-04-18 14:53:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 80 transitions. [2020-04-18 14:53:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:53:41,931 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:53:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1276846233, now seen corresponding path program 4 times [2020-04-18 14:53:41,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:41,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409100754] [2020-04-18 14:53:41,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:41,979 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 14:53:41,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409100754] [2020-04-18 14:53:41,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:41,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:41,981 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:41,982 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:41,984 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-04-18 14:53:41,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:41,992 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:41,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:41,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:53:41,993 INFO L87 Difference]: Start difference. First operand 48 states and 80 transitions. Second operand 3 states. [2020-04-18 14:53:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:41,996 INFO L93 Difference]: Finished difference Result 48 states and 80 transitions. [2020-04-18 14:53:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 80 transitions. [2020-04-18 14:53:41,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:41,997 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1673623052] [2020-04-18 14:53:41,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:41,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:53:41,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1673623052] [2020-04-18 14:53:41,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 14:53:41,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:41,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 14:53:41,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:53:41,998 INFO L87 Difference]: Start difference. First operand 192 states and 495 transitions. Second operand 5 states. [2020-04-18 14:53:42,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,051 INFO L93 Difference]: Finished difference Result 260 states and 637 transitions. [2020-04-18 14:53:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 14:53:42,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 14:53:42,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:42,055 INFO L225 Difference]: With dead ends: 260 [2020-04-18 14:53:42,055 INFO L226 Difference]: Without dead ends: 200 [2020-04-18 14:53:42,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:53:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-04-18 14:53:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-04-18 14:53:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-04-18 14:53:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 453 transitions. [2020-04-18 14:53:42,068 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 453 transitions. Word has length 12 [2020-04-18 14:53:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:42,069 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 453 transitions. [2020-04-18 14:53:42,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 14:53:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 453 transitions. [2020-04-18 14:53:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:53:42,070 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:42,070 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:42,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,071 INFO L82 PathProgramCache]: Analyzing trace with hash 131136693, now seen corresponding path program 1 times [2020-04-18 14:53:42,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:42,072 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [335785987] [2020-04-18 14:53:42,072 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 108 transitions. [2020-04-18 14:53:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 14:53:42,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:53:42,076 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,078 INFO L82 PathProgramCache]: Analyzing trace with hash 131168283, now seen corresponding path program 2 times [2020-04-18 14:53:42,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:42,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802162606] [2020-04-18 14:53:42,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:42,112 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 14:53:42,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802162606] [2020-04-18 14:53:42,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:42,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:42,114 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:42,114 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,118 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 39 transitions. [2020-04-18 14:53:42,118 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:42,121 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:42,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:42,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:42,122 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-04-18 14:53:42,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,129 INFO L93 Difference]: Finished difference Result 54 states and 112 transitions. [2020-04-18 14:53:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 112 transitions. [2020-04-18 14:53:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:53:42,130 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:53:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,130 INFO L82 PathProgramCache]: Analyzing trace with hash 131136693, now seen corresponding path program 3 times [2020-04-18 14:53:42,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:42,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458589613] [2020-04-18 14:53:42,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:42,160 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 14:53:42,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458589613] [2020-04-18 14:53:42,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:42,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:42,161 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:42,162 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,166 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 65 transitions. [2020-04-18 14:53:42,166 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:42,176 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 14:53:42,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:42,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:53:42,177 INFO L87 Difference]: Start difference. First operand 54 states and 112 transitions. Second operand 4 states. [2020-04-18 14:53:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,189 INFO L93 Difference]: Finished difference Result 54 states and 112 transitions. [2020-04-18 14:53:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 112 transitions. [2020-04-18 14:53:42,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:42,190 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [335785987] [2020-04-18 14:53:42,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:42,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:53:42,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [335785987] [2020-04-18 14:53:42,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 14:53:42,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:42,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:42,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:53:42,191 INFO L87 Difference]: Start difference. First operand 188 states and 453 transitions. Second operand 4 states. [2020-04-18 14:53:42,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,220 INFO L93 Difference]: Finished difference Result 230 states and 538 transitions. [2020-04-18 14:53:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 14:53:42,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 14:53:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:42,222 INFO L225 Difference]: With dead ends: 230 [2020-04-18 14:53:42,222 INFO L226 Difference]: Without dead ends: 134 [2020-04-18 14:53:42,222 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 14:53:42,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-04-18 14:53:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-04-18 14:53:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-04-18 14:53:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 300 transitions. [2020-04-18 14:53:42,228 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 300 transitions. Word has length 12 [2020-04-18 14:53:42,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:42,229 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 300 transitions. [2020-04-18 14:53:42,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 14:53:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 300 transitions. [2020-04-18 14:53:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:53:42,231 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:42,231 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:42,232 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 1 times [2020-04-18 14:53:42,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:42,232 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [174972361] [2020-04-18 14:53:42,233 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,235 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 14:53:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 14:53:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:53:42,236 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1034198235, now seen corresponding path program 2 times [2020-04-18 14:53:42,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:42,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962124260] [2020-04-18 14:53:42,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:42,273 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 14:53:42,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962124260] [2020-04-18 14:53:42,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:42,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:53:42,275 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:42,277 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,281 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 46 transitions. [2020-04-18 14:53:42,281 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:42,285 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:42,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:42,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:42,286 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-04-18 14:53:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,296 INFO L93 Difference]: Finished difference Result 84 states and 183 transitions. [2020-04-18 14:53:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 183 transitions. [2020-04-18 14:53:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:53:42,296 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:53:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 3 times [2020-04-18 14:53:42,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:42,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470096285] [2020-04-18 14:53:42,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:42,341 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 14:53:42,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470096285] [2020-04-18 14:53:42,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:42,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:42,342 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:42,345 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,350 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-04-18 14:53:42,350 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:42,363 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:42,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:42,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:53:42,364 INFO L87 Difference]: Start difference. First operand 84 states and 183 transitions. Second operand 4 states. [2020-04-18 14:53:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,384 INFO L93 Difference]: Finished difference Result 105 states and 209 transitions. [2020-04-18 14:53:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 209 transitions. [2020-04-18 14:53:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:53:42,385 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:53:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,385 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 4 times [2020-04-18 14:53:42,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:42,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920801948] [2020-04-18 14:53:42,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:42,418 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 14:53:42,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920801948] [2020-04-18 14:53:42,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:42,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:53:42,419 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:42,420 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,423 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-04-18 14:53:42,423 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:42,431 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:42,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:42,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:53:42,431 INFO L87 Difference]: Start difference. First operand 105 states and 209 transitions. Second operand 4 states. [2020-04-18 14:53:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,452 INFO L93 Difference]: Finished difference Result 114 states and 215 transitions. [2020-04-18 14:53:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 215 transitions. [2020-04-18 14:53:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:53:42,453 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:53:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 5 times [2020-04-18 14:53:42,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:42,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881505351] [2020-04-18 14:53:42,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:42,512 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 14:53:42,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881505351] [2020-04-18 14:53:42,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:42,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:42,514 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:42,515 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,520 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 14:53:42,520 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:42,543 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:53:42,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:42,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 14:53:42,544 INFO L87 Difference]: Start difference. First operand 114 states and 215 transitions. Second operand 4 states. [2020-04-18 14:53:42,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,557 INFO L93 Difference]: Finished difference Result 114 states and 215 transitions. [2020-04-18 14:53:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 215 transitions. [2020-04-18 14:53:42,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:42,558 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [174972361] [2020-04-18 14:53:42,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:42,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:53:42,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [174972361] [2020-04-18 14:53:42,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 14:53:42,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:42,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 14:53:42,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:53:42,560 INFO L87 Difference]: Start difference. First operand 134 states and 300 transitions. Second operand 8 states. [2020-04-18 14:53:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,927 INFO L93 Difference]: Finished difference Result 192 states and 369 transitions. [2020-04-18 14:53:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 14:53:42,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 14:53:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:42,931 INFO L225 Difference]: With dead ends: 192 [2020-04-18 14:53:42,931 INFO L226 Difference]: Without dead ends: 43 [2020-04-18 14:53:42,932 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2020-04-18 14:53:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-04-18 14:53:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-04-18 14:53:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-04-18 14:53:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 70 transitions. [2020-04-18 14:53:42,934 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 70 transitions. Word has length 13 [2020-04-18 14:53:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:42,934 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 70 transitions. [2020-04-18 14:53:42,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 14:53:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2020-04-18 14:53:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:53:42,935 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:42,935 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:42,935 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-18 14:53:42,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:42,936 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [461130663] [2020-04-18 14:53:42,937 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,938 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 14:53:42,939 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 14:53:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:53:42,940 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:42,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,940 INFO L82 PathProgramCache]: Analyzing trace with hash 246315656, now seen corresponding path program 2 times [2020-04-18 14:53:42,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:42,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743807677] [2020-04-18 14:53:42,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:42,966 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 14:53:42,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743807677] [2020-04-18 14:53:42,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:42,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:53:42,967 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:42,968 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:42,970 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-04-18 14:53:42,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:42,974 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:42,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:42,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:42,975 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-04-18 14:53:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:42,983 INFO L93 Difference]: Finished difference Result 118 states and 270 transitions. [2020-04-18 14:53:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 270 transitions. [2020-04-18 14:53:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:53:42,984 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:53:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:42,984 INFO L82 PathProgramCache]: Analyzing trace with hash 246284066, now seen corresponding path program 3 times [2020-04-18 14:53:42,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:42,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596102159] [2020-04-18 14:53:42,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:43,015 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 14:53:43,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596102159] [2020-04-18 14:53:43,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:43,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:53:43,016 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:43,017 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,020 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2020-04-18 14:53:43,020 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:43,030 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:43,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:43,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:53:43,031 INFO L87 Difference]: Start difference. First operand 118 states and 270 transitions. Second operand 4 states. [2020-04-18 14:53:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,049 INFO L93 Difference]: Finished difference Result 154 states and 327 transitions. [2020-04-18 14:53:43,049 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 327 transitions. [2020-04-18 14:53:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:53:43,050 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:53:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:43,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1444708712, now seen corresponding path program 4 times [2020-04-18 14:53:43,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:43,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297079384] [2020-04-18 14:53:43,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:43,086 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 14:53:43,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297079384] [2020-04-18 14:53:43,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:43,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:53:43,087 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:43,088 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,092 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 14:53:43,093 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:43,101 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:43,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:53:43,102 INFO L87 Difference]: Start difference. First operand 154 states and 327 transitions. Second operand 4 states. [2020-04-18 14:53:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,124 INFO L93 Difference]: Finished difference Result 172 states and 348 transitions. [2020-04-18 14:53:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 348 transitions. [2020-04-18 14:53:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:53:43,125 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:53:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:43,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 5 times [2020-04-18 14:53:43,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:43,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899789932] [2020-04-18 14:53:43,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:43,197 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 14:53:43,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899789932] [2020-04-18 14:53:43,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:43,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:53:43,199 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:43,200 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,205 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 14:53:43,205 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:43,240 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:43,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 14:53:43,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:53:43,241 INFO L87 Difference]: Start difference. First operand 172 states and 348 transitions. Second operand 5 states. [2020-04-18 14:53:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,269 INFO L93 Difference]: Finished difference Result 172 states and 348 transitions. [2020-04-18 14:53:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 348 transitions. [2020-04-18 14:53:43,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:43,270 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [461130663] [2020-04-18 14:53:43,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:43,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 14:53:43,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [461130663] [2020-04-18 14:53:43,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 14:53:43,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:43,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 14:53:43,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 14:53:43,272 INFO L87 Difference]: Start difference. First operand 43 states and 70 transitions. Second operand 9 states. [2020-04-18 14:53:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,442 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2020-04-18 14:53:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 14:53:43,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 14:53:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:43,443 INFO L225 Difference]: With dead ends: 39 [2020-04-18 14:53:43,443 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 14:53:43,444 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-04-18 14:53:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 14:53:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-04-18 14:53:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-04-18 14:53:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-04-18 14:53:43,445 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 14 [2020-04-18 14:53:43,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:43,446 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-04-18 14:53:43,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 14:53:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2020-04-18 14:53:43,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:53:43,448 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:53:43,449 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:53:43,449 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:53:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:43,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-18 14:53:43,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:53:43,450 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [46789918] [2020-04-18 14:53:43,450 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,453 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 14:53:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 14:53:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:53:43,455 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:53:43,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:43,456 INFO L82 PathProgramCache]: Analyzing trace with hash -954149052, now seen corresponding path program 2 times [2020-04-18 14:53:43,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:43,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775832674] [2020-04-18 14:53:43,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:43,481 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 14:53:43,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775832674] [2020-04-18 14:53:43,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:43,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:53:43,482 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:43,483 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,486 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 43 transitions. [2020-04-18 14:53:43,486 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:43,491 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:43,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:53:43,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:53:43,492 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-04-18 14:53:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,502 INFO L93 Difference]: Finished difference Result 158 states and 380 transitions. [2020-04-18 14:53:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 380 transitions. [2020-04-18 14:53:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:53:43,503 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:53:43,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:43,503 INFO L82 PathProgramCache]: Analyzing trace with hash -955128342, now seen corresponding path program 3 times [2020-04-18 14:53:43,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:43,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989683483] [2020-04-18 14:53:43,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:43,534 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 14:53:43,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989683483] [2020-04-18 14:53:43,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:43,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:53:43,535 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:43,536 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,539 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 53 transitions. [2020-04-18 14:53:43,540 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:43,549 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:43,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:43,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:53:43,550 INFO L87 Difference]: Start difference. First operand 158 states and 380 transitions. Second operand 4 states. [2020-04-18 14:53:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,568 INFO L93 Difference]: Finished difference Result 214 states and 482 transitions. [2020-04-18 14:53:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 482 transitions. [2020-04-18 14:53:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:53:43,569 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:53:43,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1836297316, now seen corresponding path program 4 times [2020-04-18 14:53:43,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:43,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193831704] [2020-04-18 14:53:43,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:43,595 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 14:53:43,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193831704] [2020-04-18 14:53:43,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:43,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:53:43,597 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:43,598 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 59 transitions. [2020-04-18 14:53:43,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:43,609 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:43,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:53:43,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:53:43,610 INFO L87 Difference]: Start difference. First operand 214 states and 482 transitions. Second operand 4 states. [2020-04-18 14:53:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,630 INFO L93 Difference]: Finished difference Result 246 states and 532 transitions. [2020-04-18 14:53:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 532 transitions. [2020-04-18 14:53:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:53:43,631 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:53:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:43,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1553257578, now seen corresponding path program 5 times [2020-04-18 14:53:43,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:43,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933578395] [2020-04-18 14:53:43,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:43,710 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 14:53:43,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933578395] [2020-04-18 14:53:43,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:43,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:53:43,711 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:43,712 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,715 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 43 transitions. [2020-04-18 14:53:43,715 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:43,750 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:53:43,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 14:53:43,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:53:43,751 INFO L87 Difference]: Start difference. First operand 246 states and 532 transitions. Second operand 5 states. [2020-04-18 14:53:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,809 INFO L93 Difference]: Finished difference Result 261 states and 544 transitions. [2020-04-18 14:53:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 544 transitions. [2020-04-18 14:53:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:53:43,811 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 14:53:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:53:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 6 times [2020-04-18 14:53:43,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:53:43,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216665864] [2020-04-18 14:53:43,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:53:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:53:43,862 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 14:53:43,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216665864] [2020-04-18 14:53:43,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:53:43,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:53:43,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:53:43,864 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:53:43,868 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-04-18 14:53:43,868 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:53:43,894 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:53:43,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:53:43,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-04-18 14:53:43,895 INFO L87 Difference]: Start difference. First operand 261 states and 544 transitions. Second operand 6 states. [2020-04-18 14:53:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:43,942 INFO L93 Difference]: Finished difference Result 261 states and 544 transitions. [2020-04-18 14:53:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 544 transitions. [2020-04-18 14:53:43,944 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:43,945 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [46789918] [2020-04-18 14:53:43,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:53:43,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 14:53:43,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [46789918] [2020-04-18 14:53:43,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 14:53:43,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:53:43,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 14:53:43,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-04-18 14:53:43,947 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 10 states. [2020-04-18 14:53:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:53:44,077 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2020-04-18 14:53:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 14:53:44,078 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 14:53:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:53:44,078 INFO L225 Difference]: With dead ends: 28 [2020-04-18 14:53:44,079 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 14:53:44,079 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-04-18 14:53:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 14:53:44,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 14:53:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 14:53:44,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 14:53:44,080 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 14:53:44,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:53:44,080 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 14:53:44,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 14:53:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 14:53:44,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:53:44,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:53:44 BasicIcfg [2020-04-18 14:53:44,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 14:53:44,086 INFO L168 Benchmark]: Toolchain (without parser) took 6838.90 ms. Allocated memory was 135.8 MB in the beginning and 299.9 MB in the end (delta: 164.1 MB). Free memory was 98.7 MB in the beginning and 258.3 MB in the end (delta: -159.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-04-18 14:53:44,086 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 14:53:44,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.25 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 97.0 MB in the beginning and 155.3 MB in the end (delta: -58.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-18 14:53:44,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.09 ms. Allocated memory is still 200.8 MB. Free memory was 155.3 MB in the beginning and 153.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 14:53:44,088 INFO L168 Benchmark]: Boogie Preprocessor took 31.63 ms. Allocated memory is still 200.8 MB. Free memory was 153.2 MB in the beginning and 151.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 14:53:44,088 INFO L168 Benchmark]: RCFGBuilder took 491.48 ms. Allocated memory is still 200.8 MB. Free memory was 151.8 MB in the beginning and 129.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 14:53:44,089 INFO L168 Benchmark]: TraceAbstraction took 5496.67 ms. Allocated memory was 200.8 MB in the beginning and 299.9 MB in the end (delta: 99.1 MB). Free memory was 129.1 MB in the beginning and 258.3 MB in the end (delta: -129.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 14:53:44,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 721.25 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 97.0 MB in the beginning and 155.3 MB in the end (delta: -58.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 71.09 ms. Allocated memory is still 200.8 MB. Free memory was 155.3 MB in the beginning and 153.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.63 ms. Allocated memory is still 200.8 MB. Free memory was 153.2 MB in the beginning and 151.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.48 ms. Allocated memory is still 200.8 MB. Free memory was 151.8 MB in the beginning and 129.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5496.67 ms. Allocated memory was 200.8 MB in the beginning and 299.9 MB in the end (delta: 99.1 MB). Free memory was 129.1 MB in the beginning and 258.3 MB in the end (delta: -129.2 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: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 158 SDtfs, 119 SDslu, 286 SDs, 0 SdLazy, 321 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 374 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 28 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...