/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:06:11,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:06:11,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:06:11,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:06:11,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:06:11,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:06:11,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:06:11,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:06:11,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:06:11,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:06:11,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:06:11,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:06:11,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:06:11,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:06:11,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:06:11,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:06:11,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:06:11,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:06:11,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:06:11,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:06:11,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:06:11,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:06:11,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:06:11,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:06:11,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:06:11,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:06:11,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:06:11,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:06:11,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:06:11,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:06:11,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:06:11,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:06:11,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:06:11,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:06:11,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:06:11,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:06:11,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:06:11,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:06:11,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:06:11,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:06:11,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:06:11,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:06:11,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:06:11,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:06:11,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:06:11,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:06:11,159 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:06:11,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:06:11,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:06:11,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:06:11,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:06:11,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:06:11,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:06:11,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:06:11,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:06:11,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:06:11,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:06:11,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:06:11,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:06:11,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:06:11,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:06:11,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:06:11,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:06:11,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:06:11,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:06:11,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:06:11,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:06:11,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:06:11,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:06:11,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:06:11,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:06:11,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:06:11,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:06:11,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:06:11,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:06:11,550 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:06:11,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-04-17 22:06:11,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f8f524c/dda88ca4126241a593e3436efd3c5e5c/FLAGdb7032a75 [2020-04-17 22:06:12,145 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:06:12,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-04-17 22:06:12,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f8f524c/dda88ca4126241a593e3436efd3c5e5c/FLAGdb7032a75 [2020-04-17 22:06:12,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f8f524c/dda88ca4126241a593e3436efd3c5e5c [2020-04-17 22:06:12,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:06:12,463 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:06:12,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:06:12,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:06:12,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:06:12,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:06:12" (1/1) ... [2020-04-17 22:06:12,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:12, skipping insertion in model container [2020-04-17 22:06:12,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:06:12" (1/1) ... [2020-04-17 22:06:12,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:06:12,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:06:13,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:06:13,062 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:06:13,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:06:13,216 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:06:13,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13 WrapperNode [2020-04-17 22:06:13,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:06:13,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:06:13,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:06:13,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:06:13,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:06:13,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:06:13,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:06:13,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:06:13,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... [2020-04-17 22:06:13,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:06:13,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:06:13,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:06:13,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:06:13,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:06:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:06:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:06:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:06:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:06:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:06:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:06:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:06:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:06:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:06:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:06:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:06:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:06:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:06:13,359 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:06:13,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:06:13,747 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:06:13,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:06:13 BoogieIcfgContainer [2020-04-17 22:06:13,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:06:13,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:06:13,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:06:13,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:06:13,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:06:12" (1/3) ... [2020-04-17 22:06:13,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc56580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:06:13, skipping insertion in model container [2020-04-17 22:06:13,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:13" (2/3) ... [2020-04-17 22:06:13,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc56580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:06:13, skipping insertion in model container [2020-04-17 22:06:13,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:06:13" (3/3) ... [2020-04-17 22:06:13,760 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-04-17 22:06:13,770 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:06:13,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:06:13,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:06:13,778 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:06:13,802 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,803 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,803 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,806 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,807 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,807 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,808 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,808 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,808 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,809 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,809 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,809 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,810 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,810 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,810 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,811 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,811 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,811 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,815 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,816 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,816 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,816 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,823 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,824 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,824 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,824 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,828 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,828 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,828 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,829 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:13,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:06:13,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:06:13,862 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:06:13,862 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:06:13,862 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:06:13,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:06:13,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:06:13,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:06:13,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:06:13,879 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 22:06:13,882 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 22:06:13,925 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 22:06:13,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:06:13,931 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. [2020-04-17 22:06:13,933 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 22:06:13,958 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 22:06:13,958 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:06:13,960 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. [2020-04-17 22:06:13,962 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:06:13,965 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:06:15,777 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-17 22:06:15,778 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 22:06:15,781 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 22:06:15,814 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:06:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:06:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:06:15,824 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:15,824 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:15,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:15,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:15,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-17 22:06:15,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:15,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705095549] [2020-04-17 22:06:15,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:16,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705095549] [2020-04-17 22:06:16,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:16,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:06:16,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077423858] [2020-04-17 22:06:16,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:06:16,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:16,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:06:16,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:16,077 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:06:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:16,148 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 22:06:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:06:16,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:06:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:16,178 INFO L225 Difference]: With dead ends: 282 [2020-04-17 22:06:16,179 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 22:06:16,181 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 22:06:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 22:06:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 22:06:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 22:06:16,253 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 22:06:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:16,254 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 22:06:16,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:06:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 22:06:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:06:16,256 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:16,256 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:16,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-17 22:06:16,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:16,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844549128] [2020-04-17 22:06:16,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:16,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844549128] [2020-04-17 22:06:16,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:16,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:06:16,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054359907] [2020-04-17 22:06:16,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:06:16,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:16,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:06:16,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:06:16,351 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 22:06:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:16,412 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-17 22:06:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:06:16,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 22:06:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:16,415 INFO L225 Difference]: With dead ends: 278 [2020-04-17 22:06:16,415 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 22:06:16,416 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:06:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 22:06:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 22:06:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 22:06:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-17 22:06:16,431 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-17 22:06:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:16,432 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-17 22:06:16,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:06:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-17 22:06:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:06:16,433 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:16,434 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:16,434 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:16,434 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-17 22:06:16,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:16,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697103242] [2020-04-17 22:06:16,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:16,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697103242] [2020-04-17 22:06:16,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:16,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:06:16,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613006844] [2020-04-17 22:06:16,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:06:16,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:16,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:06:16,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:06:16,505 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-17 22:06:16,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:16,539 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-17 22:06:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:06:16,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 22:06:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:16,541 INFO L225 Difference]: With dead ends: 218 [2020-04-17 22:06:16,541 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 22:06:16,542 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:06:16,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 22:06:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 22:06:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 22:06:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 22:06:16,563 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-17 22:06:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:16,564 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 22:06:16,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:06:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 22:06:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:06:16,565 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:16,565 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:16,566 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:16,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:16,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-17 22:06:16,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:16,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566658213] [2020-04-17 22:06:16,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:16,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566658213] [2020-04-17 22:06:16,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:16,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:06:16,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096590472] [2020-04-17 22:06:16,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:06:16,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:16,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:06:16,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:16,639 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-17 22:06:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:16,656 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-17 22:06:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:06:16,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 22:06:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:16,658 INFO L225 Difference]: With dead ends: 144 [2020-04-17 22:06:16,659 INFO L226 Difference]: Without dead ends: 144 [2020-04-17 22:06:16,659 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-17 22:06:16,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-17 22:06:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-17 22:06:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-17 22:06:16,685 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-17 22:06:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:16,685 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-17 22:06:16,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:06:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-17 22:06:16,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:06:16,687 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:16,689 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:16,689 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:16,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:16,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-17 22:06:16,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:16,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350715472] [2020-04-17 22:06:16,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:16,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350715472] [2020-04-17 22:06:16,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:16,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:06:16,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340894836] [2020-04-17 22:06:16,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:06:16,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:16,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:06:16,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:06:16,801 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-17 22:06:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:16,850 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-17 22:06:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:06:16,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:06:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:16,852 INFO L225 Difference]: With dead ends: 164 [2020-04-17 22:06:16,852 INFO L226 Difference]: Without dead ends: 124 [2020-04-17 22:06:16,853 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:06:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-17 22:06:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-17 22:06:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-17 22:06:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-17 22:06:16,859 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-17 22:06:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:16,860 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-17 22:06:16,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:06:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-17 22:06:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:06:16,861 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:16,861 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:16,862 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:16,862 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-17 22:06:16,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:16,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851512986] [2020-04-17 22:06:16,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:16,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851512986] [2020-04-17 22:06:16,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:16,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:06:16,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828955674] [2020-04-17 22:06:16,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:06:16,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:16,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:06:16,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:06:16,931 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-17 22:06:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:16,989 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-17 22:06:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:06:16,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 22:06:16,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:16,991 INFO L225 Difference]: With dead ends: 122 [2020-04-17 22:06:16,991 INFO L226 Difference]: Without dead ends: 97 [2020-04-17 22:06:16,992 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:06:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-17 22:06:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-17 22:06:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-17 22:06:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-17 22:06:16,996 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-17 22:06:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:16,996 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-17 22:06:16,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:06:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-17 22:06:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:06:16,998 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:16,998 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:16,998 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-17 22:06:16,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:16,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693092132] [2020-04-17 22:06:16,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:17,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693092132] [2020-04-17 22:06:17,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:17,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:06:17,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917580443] [2020-04-17 22:06:17,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:06:17,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:17,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:06:17,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:17,027 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-17 22:06:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:17,036 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-17 22:06:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:06:17,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 22:06:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:17,037 INFO L225 Difference]: With dead ends: 115 [2020-04-17 22:06:17,037 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 22:06:17,038 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 22:06:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-17 22:06:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-17 22:06:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-17 22:06:17,042 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-17 22:06:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:17,042 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-17 22:06:17,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:06:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-17 22:06:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:06:17,043 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:17,043 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:17,043 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:17,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:17,044 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-17 22:06:17,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:17,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842175280] [2020-04-17 22:06:17,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:17,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842175280] [2020-04-17 22:06:17,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:17,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:06:17,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086076141] [2020-04-17 22:06:17,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:06:17,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:17,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:06:17,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:06:17,087 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 4 states. [2020-04-17 22:06:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:17,109 INFO L93 Difference]: Finished difference Result 114 states and 219 transitions. [2020-04-17 22:06:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:06:17,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 22:06:17,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:17,111 INFO L225 Difference]: With dead ends: 114 [2020-04-17 22:06:17,111 INFO L226 Difference]: Without dead ends: 76 [2020-04-17 22:06:17,112 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:06:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-04-17 22:06:17,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-04-17 22:06:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-04-17 22:06:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2020-04-17 22:06:17,116 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 15 [2020-04-17 22:06:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:17,117 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2020-04-17 22:06:17,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:06:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2020-04-17 22:06:17,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:06:17,118 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:17,118 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:17,118 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:17,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-04-17 22:06:17,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:17,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324367544] [2020-04-17 22:06:17,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:06:17,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324367544] [2020-04-17 22:06:17,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:17,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:06:17,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777758906] [2020-04-17 22:06:17,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:06:17,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:17,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:06:17,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:06:17,184 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand 6 states. [2020-04-17 22:06:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:17,218 INFO L93 Difference]: Finished difference Result 70 states and 129 transitions. [2020-04-17 22:06:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:06:17,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 22:06:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:17,219 INFO L225 Difference]: With dead ends: 70 [2020-04-17 22:06:17,219 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:06:17,219 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:06:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:06:17,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:06:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:06:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:06:17,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-17 22:06:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:17,221 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:06:17,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:06:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:06:17,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:06:17,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:06:17 BasicIcfg [2020-04-17 22:06:17,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:06:17,228 INFO L168 Benchmark]: Toolchain (without parser) took 4779.80 ms. Allocated memory was 145.2 MB in the beginning and 248.0 MB in the end (delta: 102.8 MB). Free memory was 101.3 MB in the beginning and 159.2 MB in the end (delta: -58.0 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:17,229 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 22:06:17,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.51 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 99.3 MB in the beginning and 156.6 MB in the end (delta: -57.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:17,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 200.3 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:17,231 INFO L168 Benchmark]: Boogie Preprocessor took 24.68 ms. Allocated memory is still 200.3 MB. Free memory was 154.6 MB in the beginning and 153.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:17,232 INFO L168 Benchmark]: RCFGBuilder took 459.72 ms. Allocated memory is still 200.3 MB. Free memory was 153.3 MB in the beginning and 131.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:17,233 INFO L168 Benchmark]: TraceAbstraction took 3472.74 ms. Allocated memory was 200.3 MB in the beginning and 248.0 MB in the end (delta: 47.7 MB). Free memory was 130.7 MB in the beginning and 159.2 MB in the end (delta: -28.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:17,237 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.51 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 99.3 MB in the beginning and 156.6 MB in the end (delta: -57.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 200.3 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.68 ms. Allocated memory is still 200.3 MB. Free memory was 154.6 MB in the beginning and 153.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.72 ms. Allocated memory is still 200.3 MB. Free memory was 153.3 MB in the beginning and 131.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3472.74 ms. Allocated memory was 200.3 MB in the beginning and 248.0 MB in the end (delta: 47.7 MB). Free memory was 130.7 MB in the beginning and 159.2 MB in the end (delta: -28.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 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: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 172 SDtfs, 150 SDslu, 208 SDs, 0 SdLazy, 104 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...