/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:53:29,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:53:29,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:53:29,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:53:29,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:53:29,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:53:29,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:53:29,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:53:29,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:53:29,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:53:29,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:53:29,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:53:29,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:53:29,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:53:29,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:53:29,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:53:29,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:53:29,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:53:29,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:53:29,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:53:29,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:53:29,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:53:29,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:53:29,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:53:29,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:53:29,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:53:29,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:53:29,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:53:29,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:53:29,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:53:29,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:53:29,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:53:29,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:53:29,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:53:29,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:53:29,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:53:29,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:53:29,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:53:29,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:53:29,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:53:29,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:53:29,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:53:30,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:53:30,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:53:30,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:53:30,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:53:30,003 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:53:30,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:53:30,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:53:30,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:53:30,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:53:30,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:53:30,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:53:30,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:53:30,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:53:30,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:53:30,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:53:30,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:53:30,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:53:30,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:53:30,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:53:30,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:53:30,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:53:30,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:53:30,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:53:30,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:53:30,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:53:30,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:53:30,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:53:30,008 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:53:30,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:53:30,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:53:30,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:53:30,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:53:30,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:53:30,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:53:30,312 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:53:30,313 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-04-18 02:53:30,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6102f301d/0c7e8e307c95432093d2814707631169/FLAGbd50b08e6 [2020-04-18 02:53:30,927 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:53:30,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-04-18 02:53:30,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6102f301d/0c7e8e307c95432093d2814707631169/FLAGbd50b08e6 [2020-04-18 02:53:31,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6102f301d/0c7e8e307c95432093d2814707631169 [2020-04-18 02:53:31,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:53:31,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:53:31,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:53:31,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:53:31,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:53:31,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:53:31" (1/1) ... [2020-04-18 02:53:31,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d48360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:31, skipping insertion in model container [2020-04-18 02:53:31,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:53:31" (1/1) ... [2020-04-18 02:53:31,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:53:31,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:53:31,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:53:31,852 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:53:31,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:53:32,025 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:53:32,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32 WrapperNode [2020-04-18 02:53:32,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:53:32,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:53:32,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:53:32,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:53:32,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:53:32,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:53:32,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:53:32,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:53:32,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (1/1) ... [2020-04-18 02:53:32,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:53:32,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:53:32,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:53:32,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:53:32,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (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 02:53:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:53:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:53:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:53:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:53:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:53:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:53:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:53:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:53:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:53:32,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:53:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:53:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:53:32,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:53:32,221 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 02:53:32,597 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:53:32,597 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:53:32,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:53:32 BoogieIcfgContainer [2020-04-18 02:53:32,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:53:32,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:53:32,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:53:32,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:53:32,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:53:31" (1/3) ... [2020-04-18 02:53:32,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43301702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:53:32, skipping insertion in model container [2020-04-18 02:53:32,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:32" (2/3) ... [2020-04-18 02:53:32,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43301702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:53:32, skipping insertion in model container [2020-04-18 02:53:32,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:53:32" (3/3) ... [2020-04-18 02:53:32,610 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-04-18 02:53:32,621 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:53:32,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:53:32,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:53:32,633 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:53:32,661 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,661 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,662 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,662 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,663 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,663 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,663 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,664 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,664 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,664 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,664 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,665 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,665 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,665 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,666 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,666 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,666 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,666 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,670 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,671 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,671 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,671 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,677 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,678 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,678 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,678 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,685 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,686 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,686 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,686 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:32,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:53:32,720 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:53:32,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:53:32,720 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:53:32,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:53:32,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:53:32,720 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:53:32,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:53:32,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:53:32,735 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:53:32,737 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:53:32,785 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:53:32,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:53:32,790 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:53:32,793 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:53:32,815 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:53:32,816 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:53:32,816 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:53:32,819 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:53:32,820 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:53:34,263 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:53:34,511 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-18 02:53:34,511 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 02:53:34,515 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 02:53:34,540 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:53:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:53:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:53:34,550 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:34,551 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:34,551 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-18 02:53:34,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:34,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036759714] [2020-04-18 02:53:34,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:34,766 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 02:53:34,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036759714] [2020-04-18 02:53:34,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:34,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:53:34,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392117489] [2020-04-18 02:53:34,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:53:34,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:34,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:53:34,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:53:34,787 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:53:34,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:34,862 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-18 02:53:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:53:34,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:53:34,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:34,905 INFO L225 Difference]: With dead ends: 294 [2020-04-18 02:53:34,905 INFO L226 Difference]: Without dead ends: 230 [2020-04-18 02:53:34,907 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 [2020-04-18 02:53:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-18 02:53:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-18 02:53:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-18 02:53:34,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-18 02:53:34,985 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-18 02:53:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:34,986 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-18 02:53:34,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:53:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-18 02:53:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:53:34,988 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:34,988 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:34,988 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:34,989 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-04-18 02:53:34,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:34,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19191794] [2020-04-18 02:53:34,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:35,068 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 02:53:35,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19191794] [2020-04-18 02:53:35,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:35,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:53:35,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846037171] [2020-04-18 02:53:35,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:53:35,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:35,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:53:35,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:53:35,072 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-18 02:53:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:35,082 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 02:53:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:53:35,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:53:35,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:35,085 INFO L225 Difference]: With dead ends: 202 [2020-04-18 02:53:35,085 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:53:35,086 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 [2020-04-18 02:53:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:53:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:53:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:53:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:53:35,104 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 02:53:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:35,105 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:53:35,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:53:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:53:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:53:35,107 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:35,107 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:35,107 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:35,108 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-18 02:53:35,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:35,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099493239] [2020-04-18 02:53:35,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:35,167 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 02:53:35,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099493239] [2020-04-18 02:53:35,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:35,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:53:35,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576748298] [2020-04-18 02:53:35,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:53:35,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:35,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:53:35,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:53:35,169 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 02:53:35,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:35,208 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-18 02:53:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:53:35,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:53:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:35,211 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:53:35,211 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 02:53:35,211 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 [2020-04-18 02:53:35,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 02:53:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 02:53:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 02:53:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-18 02:53:35,223 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-18 02:53:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:35,223 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-18 02:53:35,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:53:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-18 02:53:35,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:53:35,224 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:35,225 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:35,225 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:35,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:35,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-18 02:53:35,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:35,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183717661] [2020-04-18 02:53:35,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:35,310 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 02:53:35,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183717661] [2020-04-18 02:53:35,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:35,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:53:35,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316850261] [2020-04-18 02:53:35,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:35,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:35,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:35,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:35,313 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-04-18 02:53:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:35,355 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-18 02:53:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:53:35,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:53:35,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:35,357 INFO L225 Difference]: With dead ends: 165 [2020-04-18 02:53:35,357 INFO L226 Difference]: Without dead ends: 113 [2020-04-18 02:53:35,358 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 [2020-04-18 02:53:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-18 02:53:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-18 02:53:35,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-18 02:53:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-18 02:53:35,367 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-18 02:53:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:35,368 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-18 02:53:35,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-18 02:53:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:53:35,371 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:35,371 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:35,372 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:35,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:35,372 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-18 02:53:35,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:35,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412051337] [2020-04-18 02:53:35,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:35,496 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 02:53:35,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412051337] [2020-04-18 02:53:35,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:35,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:35,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082768171] [2020-04-18 02:53:35,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:53:35,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:35,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:53:35,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:53:35,501 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-04-18 02:53:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:35,558 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-18 02:53:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:53:35,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:53:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:35,560 INFO L225 Difference]: With dead ends: 111 [2020-04-18 02:53:35,560 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 02:53:35,563 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 [2020-04-18 02:53:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 02:53:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 02:53:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 02:53:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-18 02:53:35,574 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-18 02:53:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:35,574 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-18 02:53:35,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:53:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-18 02:53:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:53:35,576 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:35,576 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:35,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-18 02:53:35,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:35,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537910426] [2020-04-18 02:53:35,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:35,660 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 02:53:35,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537910426] [2020-04-18 02:53:35,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:35,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:53:35,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134427278] [2020-04-18 02:53:35,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:53:35,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:35,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:53:35,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:53:35,663 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-04-18 02:53:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:35,726 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-18 02:53:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:53:35,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 02:53:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:35,728 INFO L225 Difference]: With dead ends: 75 [2020-04-18 02:53:35,728 INFO L226 Difference]: Without dead ends: 66 [2020-04-18 02:53:35,728 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 [2020-04-18 02:53:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-18 02:53:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-18 02:53:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-18 02:53:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-18 02:53:35,733 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-18 02:53:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:35,733 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-18 02:53:35,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:53:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-18 02:53:35,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:53:35,734 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:35,734 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:35,735 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:35,735 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-18 02:53:35,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:35,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758204963] [2020-04-18 02:53:35,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:35,819 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 02:53:35,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758204963] [2020-04-18 02:53:35,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:35,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:35,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102753535] [2020-04-18 02:53:35,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:35,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:35,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:35,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:35,821 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-04-18 02:53:35,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:35,848 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-04-18 02:53:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:53:35,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:53:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:35,849 INFO L225 Difference]: With dead ends: 85 [2020-04-18 02:53:35,849 INFO L226 Difference]: Without dead ends: 48 [2020-04-18 02:53:35,849 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-04-18 02:53:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-04-18 02:53:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-04-18 02:53:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-04-18 02:53:35,853 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-04-18 02:53:35,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:35,853 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-04-18 02:53:35,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:35,853 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-04-18 02:53:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:53:35,854 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:35,854 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:35,854 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:35,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-04-18 02:53:35,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:35,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651349270] [2020-04-18 02:53:35,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:35,887 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 02:53:35,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651349270] [2020-04-18 02:53:35,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:35,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:35,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939717405] [2020-04-18 02:53:35,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:35,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:35,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:35,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:35,889 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-04-18 02:53:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:35,909 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-04-18 02:53:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:53:35,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:53:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:35,911 INFO L225 Difference]: With dead ends: 73 [2020-04-18 02:53:35,911 INFO L226 Difference]: Without dead ends: 42 [2020-04-18 02:53:35,911 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 [2020-04-18 02:53:35,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-04-18 02:53:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-04-18 02:53:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-04-18 02:53:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-04-18 02:53:35,914 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-04-18 02:53:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:35,914 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-04-18 02:53:35,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-04-18 02:53:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:53:35,915 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:35,915 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:35,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:35,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:35,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-04-18 02:53:35,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:35,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976489676] [2020-04-18 02:53:35,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:35,988 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 02:53:35,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976489676] [2020-04-18 02:53:35,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:35,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:35,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669874879] [2020-04-18 02:53:35,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:35,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:35,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:35,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:35,991 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-04-18 02:53:36,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:36,002 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-04-18 02:53:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:53:36,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:53:36,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:36,003 INFO L225 Difference]: With dead ends: 41 [2020-04-18 02:53:36,003 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:53:36,003 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 [2020-04-18 02:53:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:53:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:53:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:53:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:53:36,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:53:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:36,004 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:53:36,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:53:36,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:53:36,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:53:36 BasicIcfg [2020-04-18 02:53:36,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:53:36,013 INFO L168 Benchmark]: Toolchain (without parser) took 4760.15 ms. Allocated memory was 137.9 MB in the beginning and 249.0 MB in the end (delta: 111.1 MB). Free memory was 99.6 MB in the beginning and 187.5 MB in the end (delta: -88.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:36,015 INFO L168 Benchmark]: CDTParser took 1.70 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:53:36,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.10 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 97.6 MB in the beginning and 158.3 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:36,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.16 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:36,024 INFO L168 Benchmark]: Boogie Preprocessor took 41.75 ms. Allocated memory is still 202.4 MB. Free memory was 155.6 MB in the beginning and 154.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:36,025 INFO L168 Benchmark]: RCFGBuilder took 450.27 ms. Allocated memory is still 202.4 MB. Free memory was 154.3 MB in the beginning and 132.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:36,028 INFO L168 Benchmark]: TraceAbstraction took 3407.80 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 132.0 MB in the beginning and 187.5 MB in the end (delta: -55.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:53:36,044 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.70 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 758.10 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 97.6 MB in the beginning and 158.3 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 82.16 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.75 ms. Allocated memory is still 202.4 MB. Free memory was 155.6 MB in the beginning and 154.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.27 ms. Allocated memory is still 202.4 MB. Free memory was 154.3 MB in the beginning and 132.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3407.80 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 132.0 MB in the beginning and 187.5 MB in the end (delta: -55.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 172 SDtfs, 128 SDslu, 191 SDs, 0 SdLazy, 119 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3604 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...