/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:57:18,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:57:18,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:57:18,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:57:18,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:57:18,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:57:18,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:57:18,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:57:18,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:57:18,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:57:18,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:57:18,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:57:18,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:57:18,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:57:18,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:57:18,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:57:18,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:57:18,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:57:18,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:57:18,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:57:18,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:57:18,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:57:18,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:57:18,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:57:18,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:57:18,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:57:18,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:57:18,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:57:18,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:57:18,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:57:18,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:57:18,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:57:18,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:57:18,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:57:18,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:57:18,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:57:18,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:57:18,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:57:18,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:57:18,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:57:18,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:57:18,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:57:18,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:57:18,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:57:18,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:57:18,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:57:18,127 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:57:18,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:57:18,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:57:18,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:57:18,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:57:18,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:57:18,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:57:18,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:57:18,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:57:18,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:57:18,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:57:18,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:57:18,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:57:18,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:57:18,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:57:18,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:57:18,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:57:18,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:57:18,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:57:18,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:57:18,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:57:18,132 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:57:18,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:57:18,133 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:57:18,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:57:18,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:57:18,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:57:18,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:57:18,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:57:18,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:57:18,478 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:57:18,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-04-18 10:57:18,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b6cd95e/7db2ff950f6744819688fb98367091c9/FLAG546570e39 [2020-04-18 10:57:19,090 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:57:19,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-04-18 10:57:19,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b6cd95e/7db2ff950f6744819688fb98367091c9/FLAG546570e39 [2020-04-18 10:57:19,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b6cd95e/7db2ff950f6744819688fb98367091c9 [2020-04-18 10:57:19,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:57:19,436 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:57:19,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:57:19,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:57:19,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:57:19,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:57:19" (1/1) ... [2020-04-18 10:57:19,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c86ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:19, skipping insertion in model container [2020-04-18 10:57:19,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:57:19" (1/1) ... [2020-04-18 10:57:19,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:57:19,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:57:19,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:57:19,938 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:57:19,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:57:20,075 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:57:20,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20 WrapperNode [2020-04-18 10:57:20,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:57:20,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:57:20,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:57:20,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:57:20,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:57:20,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:57:20,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:57:20,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:57:20,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (1/1) ... [2020-04-18 10:57:20,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:57:20,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:57:20,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:57:20,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:57:20,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (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 10:57:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:57:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:57:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:57:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:57:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:57:20,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:57:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:57:20,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:57:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:57:20,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:57:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:57:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:57:20,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:57:20,268 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 10:57:20,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:57:20,685 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:57:20,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:57:20 BoogieIcfgContainer [2020-04-18 10:57:20,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:57:20,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:57:20,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:57:20,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:57:20,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:57:19" (1/3) ... [2020-04-18 10:57:20,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e6503c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:57:20, skipping insertion in model container [2020-04-18 10:57:20,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:57:20" (2/3) ... [2020-04-18 10:57:20,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e6503c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:57:20, skipping insertion in model container [2020-04-18 10:57:20,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:57:20" (3/3) ... [2020-04-18 10:57:20,702 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-04-18 10:57:20,711 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:57:20,711 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:57:20,718 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:57:20,719 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:57:20,749 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,750 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,750 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,750 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,751 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,751 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,752 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,752 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,753 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,753 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,754 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,754 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,755 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,755 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,756 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,756 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,757 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,757 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,762 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,762 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,762 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,763 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,780 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,781 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,781 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,781 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,785 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,785 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:57:20,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:57:20,820 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:57:20,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:57:20,821 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:57:20,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:57:20,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:57:20,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:57:20,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:57:20,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:57:20,845 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 10:57:20,847 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:57:20,898 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:57:20,898 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:57:20,903 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 46 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 10:57:20,906 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:57:20,935 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:57:20,936 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:57:20,936 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 46 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 10:57:20,941 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:57:20,944 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:57:22,787 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-18 10:57:22,788 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 10:57:22,794 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:57:22,843 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:57:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:57:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:57:22,859 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:57:22,861 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:57:22,861 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:57:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:22,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-18 10:57:22,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:57:22,879 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1118713431] [2020-04-18 10:57:22,895 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:22,910 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:57:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:57:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:57:22,914 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:57:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:22,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 2 times [2020-04-18 10:57:22,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:22,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818774465] [2020-04-18 10:57:22,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:23,165 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 10:57:23,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818774465] [2020-04-18 10:57:23,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:23,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:57:23,171 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:23,171 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:23,178 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:57:23,178 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:23,186 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:23,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:23,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:23,194 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:57:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,198 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:57:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:57:23,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:23,200 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1118713431] [2020-04-18 10:57:23,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:57:23,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:57:23,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1118713431] [2020-04-18 10:57:23,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:57:23,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:57:23,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:23,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:23,209 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:57:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,261 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 10:57:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:57:23,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:57:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:57:23,291 INFO L225 Difference]: With dead ends: 282 [2020-04-18 10:57:23,291 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 10:57:23,301 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 10:57:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 10:57:23,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 10:57:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 10:57:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 10:57:23,385 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 10:57:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:57:23,386 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 10:57:23,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:57:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 10:57:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:57:23,388 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:57:23,388 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:57:23,389 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:57:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:23,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-18 10:57:23,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:57:23,390 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [247522561] [2020-04-18 10:57:23,390 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:23,391 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 10:57:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:57:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:57:23,392 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:57:23,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:23,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379138, now seen corresponding path program 2 times [2020-04-18 10:57:23,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:23,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723722005] [2020-04-18 10:57:23,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:23,460 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 10:57:23,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723722005] [2020-04-18 10:57:23,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:23,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:23,462 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:23,464 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:23,466 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:57:23,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:23,471 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:23,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:23,471 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 10:57:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,476 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 10:57:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 10:57:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:57:23,476 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:57:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:23,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 3 times [2020-04-18 10:57:23,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:23,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754756266] [2020-04-18 10:57:23,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:23,572 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 10:57:23,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754756266] [2020-04-18 10:57:23,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:23,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:23,574 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:23,577 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:23,578 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:57:23,578 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:23,592 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:57:23,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:57:23,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:57:23,593 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 10:57:23,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,605 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 10:57:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 10:57:23,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:23,606 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [247522561] [2020-04-18 10:57:23,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:57:23,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:57:23,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [247522561] [2020-04-18 10:57:23,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:57:23,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:57:23,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:57:23,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:57:23,608 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 10:57:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,632 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 10:57:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:57:23,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:57:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:57:23,635 INFO L225 Difference]: With dead ends: 278 [2020-04-18 10:57:23,635 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 10:57:23,636 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 10:57:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 10:57:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 10:57:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 10:57:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 10:57:23,652 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 10:57:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:57:23,652 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 10:57:23,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:57:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 10:57:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:57:23,654 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:57:23,654 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:57:23,654 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:57:23,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:23,655 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-18 10:57:23,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:57:23,656 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1991753981] [2020-04-18 10:57:23,657 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:23,657 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 10:57:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 10:57:23,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:57:23,660 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:57:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash 415020294, now seen corresponding path program 2 times [2020-04-18 10:57:23,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:23,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232241176] [2020-04-18 10:57:23,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:23,748 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 10:57:23,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232241176] [2020-04-18 10:57:23,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:23,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:23,750 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:23,751 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:23,752 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 10:57:23,752 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:23,776 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:23,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:23,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:23,777 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 10:57:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,781 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 10:57:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 10:57:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:57:23,781 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:57:23,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:23,782 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 3 times [2020-04-18 10:57:23,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:23,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688003283] [2020-04-18 10:57:23,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:23,832 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 10:57:23,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688003283] [2020-04-18 10:57:23,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:23,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:57:23,833 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:23,834 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:23,835 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 10:57:23,836 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:23,846 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:57:23,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:57:23,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:57:23,847 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2020-04-18 10:57:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,862 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-04-18 10:57:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-04-18 10:57:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:57:23,862 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:57:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:23,863 INFO L82 PathProgramCache]: Analyzing trace with hash 808893834, now seen corresponding path program 4 times [2020-04-18 10:57:23,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:23,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077633409] [2020-04-18 10:57:23,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:23,905 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 10:57:23,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077633409] [2020-04-18 10:57:23,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:23,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:57:23,906 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:23,907 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:23,908 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 10:57:23,909 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:23,917 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:57:23,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:57:23,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:57:23,918 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-04-18 10:57:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,935 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-04-18 10:57:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-04-18 10:57:23,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:23,937 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1991753981] [2020-04-18 10:57:23,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:57:23,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:57:23,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1991753981] [2020-04-18 10:57:23,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:57:23,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:57:23,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:57:23,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:57:23,938 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 6 states. [2020-04-18 10:57:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:23,986 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 10:57:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:57:23,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-18 10:57:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:57:23,988 INFO L225 Difference]: With dead ends: 218 [2020-04-18 10:57:23,988 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 10:57:23,989 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:57:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 10:57:23,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 10:57:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 10:57:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 10:57:23,998 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 10:57:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:57:23,999 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 10:57:23,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:57:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 10:57:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:57:24,000 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:57:24,000 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:57:24,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:57:24,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-18 10:57:24,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:57:24,001 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [718547965] [2020-04-18 10:57:24,002 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,003 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:57:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:57:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:57:24,004 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:57:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1558338202, now seen corresponding path program 2 times [2020-04-18 10:57:24,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:24,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673914278] [2020-04-18 10:57:24,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:24,059 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 10:57:24,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673914278] [2020-04-18 10:57:24,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:24,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:24,060 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:24,062 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,064 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 10:57:24,065 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:24,069 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:24,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:24,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:24,069 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 10:57:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,074 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:57:24,074 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:57:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:57:24,074 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:57:24,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 3 times [2020-04-18 10:57:24,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:24,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337570552] [2020-04-18 10:57:24,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:24,113 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 10:57:24,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337570552] [2020-04-18 10:57:24,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:24,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:57:24,114 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:24,115 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,118 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:57:24,119 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:24,137 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:24,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:24,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:57:24,138 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 3 states. [2020-04-18 10:57:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,145 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:57:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:57:24,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:24,146 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [718547965] [2020-04-18 10:57:24,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:57:24,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:57:24,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [718547965] [2020-04-18 10:57:24,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:57:24,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:57:24,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:57:24,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:57:24,148 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-18 10:57:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,177 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 10:57:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:57:24,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 10:57:24,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:57:24,180 INFO L225 Difference]: With dead ends: 144 [2020-04-18 10:57:24,180 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 10:57:24,181 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 10:57:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 10:57:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 10:57:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 10:57:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 10:57:24,201 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 10:57:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:57:24,202 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 10:57:24,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:57:24,202 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 10:57:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:57:24,206 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:57:24,206 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:57:24,207 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:57:24,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-18 10:57:24,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:57:24,207 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [903961986] [2020-04-18 10:57:24,208 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,210 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 10:57:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 10:57:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:57:24,215 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:57:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1063843815, now seen corresponding path program 2 times [2020-04-18 10:57:24,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:24,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931476895] [2020-04-18 10:57:24,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:24,249 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 10:57:24,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931476895] [2020-04-18 10:57:24,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:24,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:24,251 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:24,252 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,255 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 10:57:24,255 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:24,259 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:24,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:24,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:24,259 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 10:57:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,264 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 10:57:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 10:57:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:57:24,264 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:57:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1063869855, now seen corresponding path program 3 times [2020-04-18 10:57:24,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:24,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756237061] [2020-04-18 10:57:24,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:24,304 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 10:57:24,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756237061] [2020-04-18 10:57:24,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:24,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:24,306 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:24,307 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,311 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 10:57:24,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:24,323 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:24,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:24,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:57:24,324 INFO L87 Difference]: Start difference. First operand 60 states and 125 transitions. Second operand 3 states. [2020-04-18 10:57:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,328 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2020-04-18 10:57:24,328 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2020-04-18 10:57:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:57:24,329 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:57:24,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1063870665, now seen corresponding path program 4 times [2020-04-18 10:57:24,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:24,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956884312] [2020-04-18 10:57:24,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:24,438 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 10:57:24,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956884312] [2020-04-18 10:57:24,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:24,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:24,440 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:24,441 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,445 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-04-18 10:57:24,446 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:24,463 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:57:24,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:57:24,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:57:24,464 INFO L87 Difference]: Start difference. First operand 69 states and 134 transitions. Second operand 4 states. [2020-04-18 10:57:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,481 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2020-04-18 10:57:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2020-04-18 10:57:24,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:24,482 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [903961986] [2020-04-18 10:57:24,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:57:24,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:57:24,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [903961986] [2020-04-18 10:57:24,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:57:24,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:57:24,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:57:24,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:57:24,484 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 6 states. [2020-04-18 10:57:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,653 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 10:57:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 10:57:24,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 10:57:24,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:57:24,655 INFO L225 Difference]: With dead ends: 164 [2020-04-18 10:57:24,655 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 10:57:24,655 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:57:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 10:57:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 10:57:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 10:57:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 10:57:24,661 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 10:57:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:57:24,662 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 10:57:24,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:57:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 10:57:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:57:24,662 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:57:24,663 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:57:24,663 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:57:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,663 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-18 10:57:24,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:57:24,664 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1249621989] [2020-04-18 10:57:24,665 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,666 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 160 transitions. [2020-04-18 10:57:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 10:57:24,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:57:24,668 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:57:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1309642661, now seen corresponding path program 2 times [2020-04-18 10:57:24,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:24,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390593793] [2020-04-18 10:57:24,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:24,696 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 10:57:24,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390593793] [2020-04-18 10:57:24,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:24,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:24,697 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:24,699 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,701 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 10:57:24,701 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:24,705 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:24,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:24,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:24,706 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-04-18 10:57:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,726 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 10:57:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 10:57:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:57:24,727 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:57:24,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1309616621, now seen corresponding path program 3 times [2020-04-18 10:57:24,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:24,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647787444] [2020-04-18 10:57:24,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:24,750 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 10:57:24,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647787444] [2020-04-18 10:57:24,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:24,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:24,751 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:24,752 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,755 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 10:57:24,755 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:24,760 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:24,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:24,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:57:24,761 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 3 states. [2020-04-18 10:57:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,764 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2020-04-18 10:57:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2020-04-18 10:57:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:57:24,765 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:57:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:24,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1309615811, now seen corresponding path program 4 times [2020-04-18 10:57:24,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:24,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019752236] [2020-04-18 10:57:24,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:24,815 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 10:57:24,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019752236] [2020-04-18 10:57:24,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:24,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:57:24,816 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:24,817 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:24,822 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 10:57:24,822 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:24,845 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:24,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:57:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:57:24,846 INFO L87 Difference]: Start difference. First operand 90 states and 183 transitions. Second operand 5 states. [2020-04-18 10:57:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:24,875 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2020-04-18 10:57:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2020-04-18 10:57:24,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:24,876 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1249621989] [2020-04-18 10:57:24,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:57:24,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:57:24,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1249621989] [2020-04-18 10:57:24,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:57:24,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:57:24,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:57:24,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:57:24,877 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 7 states. [2020-04-18 10:57:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,040 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 10:57:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 10:57:25,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 10:57:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:57:25,042 INFO L225 Difference]: With dead ends: 122 [2020-04-18 10:57:25,042 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 10:57:25,043 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:57:25,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 10:57:25,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 10:57:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 10:57:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 10:57:25,047 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 10:57:25,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:57:25,047 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 10:57:25,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:57:25,047 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 10:57:25,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:57:25,048 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:57:25,048 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:57:25,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:57:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-18 10:57:25,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:57:25,049 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1313725990] [2020-04-18 10:57:25,050 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,052 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 10:57:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 10:57:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:57:25,054 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:57:25,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1944216008, now seen corresponding path program 2 times [2020-04-18 10:57:25,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436223771] [2020-04-18 10:57:25,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,079 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 10:57:25,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436223771] [2020-04-18 10:57:25,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:25,080 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,081 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,083 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-04-18 10:57:25,084 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,087 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:25,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:25,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:25,088 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 10:57:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,091 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 10:57:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 10:57:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:57:25,092 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:57:25,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1943408768, now seen corresponding path program 3 times [2020-04-18 10:57:25,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935028870] [2020-04-18 10:57:25,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,118 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 10:57:25,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935028870] [2020-04-18 10:57:25,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:25,119 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,123 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 10:57:25,123 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,127 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:25,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:25,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:57:25,128 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 3 states. [2020-04-18 10:57:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,130 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 10:57:25,131 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 10:57:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:57:25,131 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:57:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1943352968, now seen corresponding path program 4 times [2020-04-18 10:57:25,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087154099] [2020-04-18 10:57:25,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,158 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 10:57:25,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087154099] [2020-04-18 10:57:25,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:57:25,159 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,160 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,163 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 10:57:25,163 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,171 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:57:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:25,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:57:25,176 INFO L87 Difference]: Start difference. First operand 80 states and 149 transitions. Second operand 3 states. [2020-04-18 10:57:25,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,180 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 10:57:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 10:57:25,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:25,181 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1313725990] [2020-04-18 10:57:25,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:57:25,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:57:25,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1313725990] [2020-04-18 10:57:25,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:57:25,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:57:25,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:57:25,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:57:25,184 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 5 states. [2020-04-18 10:57:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,206 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 10:57:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:57:25,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 10:57:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:57:25,207 INFO L225 Difference]: With dead ends: 115 [2020-04-18 10:57:25,207 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 10:57:25,208 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:57:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 10:57:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 10:57:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 10:57:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 10:57:25,211 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 10:57:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:57:25,213 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 10:57:25,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:57:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 10:57:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:57:25,214 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:57:25,214 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:57:25,214 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:57:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,215 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-18 10:57:25,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:57:25,216 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1555319914] [2020-04-18 10:57:25,217 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,222 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 10:57:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 10:57:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:57:25,225 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:57:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,226 INFO L82 PathProgramCache]: Analyzing trace with hash 141184219, now seen corresponding path program 2 times [2020-04-18 10:57:25,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875986637] [2020-04-18 10:57:25,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,251 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 10:57:25,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875986637] [2020-04-18 10:57:25,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:25,252 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,258 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-04-18 10:57:25,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,261 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:25,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:25,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:57:25,262 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 10:57:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,266 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 10:57:25,266 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 10:57:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:57:25,267 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:57:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash 116159779, now seen corresponding path program 3 times [2020-04-18 10:57:25,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116461532] [2020-04-18 10:57:25,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,304 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 10:57:25,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116461532] [2020-04-18 10:57:25,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:57:25,305 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,306 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,309 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 10:57:25,309 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,319 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:57:25,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:57:25,320 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-04-18 10:57:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,323 INFO L93 Difference]: Finished difference Result 190 states and 439 transitions. [2020-04-18 10:57:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 439 transitions. [2020-04-18 10:57:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:57:25,324 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:57:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash 115313869, now seen corresponding path program 4 times [2020-04-18 10:57:25,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765143264] [2020-04-18 10:57:25,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,352 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 10:57:25,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765143264] [2020-04-18 10:57:25,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:57:25,353 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,355 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,361 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 10:57:25,361 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,444 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:57:25,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:57:25,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:57:25,445 INFO L87 Difference]: Start difference. First operand 190 states and 439 transitions. Second operand 5 states. [2020-04-18 10:57:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,481 INFO L93 Difference]: Finished difference Result 295 states and 630 transitions. [2020-04-18 10:57:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 630 transitions. [2020-04-18 10:57:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:57:25,482 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:57:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,483 INFO L82 PathProgramCache]: Analyzing trace with hash 115381369, now seen corresponding path program 5 times [2020-04-18 10:57:25,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167130457] [2020-04-18 10:57:25,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,561 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 10:57:25,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167130457] [2020-04-18 10:57:25,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:57:25,563 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,565 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,571 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 73 transitions. [2020-04-18 10:57:25,571 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,606 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:25,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:57:25,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:57:25,607 INFO L87 Difference]: Start difference. First operand 295 states and 630 transitions. Second operand 5 states. [2020-04-18 10:57:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,686 INFO L93 Difference]: Finished difference Result 305 states and 638 transitions. [2020-04-18 10:57:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 638 transitions. [2020-04-18 10:57:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:57:25,687 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:57:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1392131675, now seen corresponding path program 6 times [2020-04-18 10:57:25,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830956700] [2020-04-18 10:57:25,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,737 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 10:57:25,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830956700] [2020-04-18 10:57:25,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:57:25,738 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,740 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,746 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 51 transitions. [2020-04-18 10:57:25,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,774 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:57:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:57:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:57:25,775 INFO L87 Difference]: Start difference. First operand 305 states and 638 transitions. Second operand 4 states. [2020-04-18 10:57:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,803 INFO L93 Difference]: Finished difference Result 432 states and 842 transitions. [2020-04-18 10:57:25,803 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 842 transitions. [2020-04-18 10:57:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:57:25,804 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:57:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash -940012763, now seen corresponding path program 7 times [2020-04-18 10:57:25,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171942630] [2020-04-18 10:57:25,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:25,837 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 10:57:25,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171942630] [2020-04-18 10:57:25,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:25,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:57:25,838 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:25,840 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:25,847 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 65 transitions. [2020-04-18 10:57:25,847 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:25,899 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:57:25,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:57:25,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:57:25,900 INFO L87 Difference]: Start difference. First operand 432 states and 842 transitions. Second operand 5 states. [2020-04-18 10:57:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:25,942 INFO L93 Difference]: Finished difference Result 541 states and 1034 transitions. [2020-04-18 10:57:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1034 transitions. [2020-04-18 10:57:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:57:25,944 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 10:57:25,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:57:25,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1488530927, now seen corresponding path program 8 times [2020-04-18 10:57:25,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:57:25,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008925807] [2020-04-18 10:57:25,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:57:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:57:26,006 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 10:57:26,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008925807] [2020-04-18 10:57:26,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:57:26,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:57:26,007 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:57:26,008 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:57:26,012 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-04-18 10:57:26,013 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:57:26,083 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:57:26,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:57:26,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:57:26,085 INFO L87 Difference]: Start difference. First operand 541 states and 1034 transitions. Second operand 7 states. [2020-04-18 10:57:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:26,164 INFO L93 Difference]: Finished difference Result 541 states and 1034 transitions. [2020-04-18 10:57:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1034 transitions. [2020-04-18 10:57:26,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:26,168 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1555319914] [2020-04-18 10:57:26,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:57:26,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:57:26,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1555319914] [2020-04-18 10:57:26,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 10:57:26,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:57:26,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 10:57:26,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-04-18 10:57:26,170 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 16 states. [2020-04-18 10:57:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:57:27,284 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-04-18 10:57:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 10:57:27,284 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2020-04-18 10:57:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:57:27,284 INFO L225 Difference]: With dead ends: 133 [2020-04-18 10:57:27,285 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:57:27,287 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=515, Invalid=2907, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 10:57:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:57:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:57:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:57:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:57:27,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 10:57:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:57:27,289 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:57:27,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 10:57:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:57:27,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:57:27,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:57:27 BasicIcfg [2020-04-18 10:57:27,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:57:27,296 INFO L168 Benchmark]: Toolchain (without parser) took 7874.22 ms. Allocated memory was 139.5 MB in the beginning and 303.0 MB in the end (delta: 163.6 MB). Free memory was 102.5 MB in the beginning and 229.0 MB in the end (delta: -126.4 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:57:27,296 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 139.5 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 10:57:27,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.00 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 161.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:57:27,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.45 ms. Allocated memory is still 203.9 MB. Free memory was 161.0 MB in the beginning and 158.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:57:27,298 INFO L168 Benchmark]: Boogie Preprocessor took 28.83 ms. Allocated memory is still 203.9 MB. Free memory was 158.1 MB in the beginning and 157.2 MB in the end (delta: 955.2 kB). Peak memory consumption was 955.2 kB. Max. memory is 7.1 GB. [2020-04-18 10:57:27,298 INFO L168 Benchmark]: RCFGBuilder took 512.38 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 135.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 10:57:27,299 INFO L168 Benchmark]: TraceAbstraction took 6598.39 ms. Allocated memory was 203.9 MB in the beginning and 303.0 MB in the end (delta: 99.1 MB). Free memory was 134.6 MB in the beginning and 229.0 MB in the end (delta: -94.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:57:27,301 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 139.5 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.00 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 161.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 75.45 ms. Allocated memory is still 203.9 MB. Free memory was 161.0 MB in the beginning and 158.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.83 ms. Allocated memory is still 203.9 MB. Free memory was 158.1 MB in the beginning and 157.2 MB in the end (delta: 955.2 kB). Peak memory consumption was 955.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 512.38 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 135.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6598.39 ms. Allocated memory was 203.9 MB in the beginning and 303.0 MB in the end (delta: 99.1 MB). Free memory was 134.6 MB in the beginning and 229.0 MB in the end (delta: -94.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 676 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 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: 6.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 159 SDtfs, 241 SDslu, 427 SDs, 0 SdLazy, 399 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.4s 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, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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...