/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/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:47:39,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:47:39,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:47:39,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:47:39,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:47:39,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:47:39,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:47:39,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:47:39,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:47:39,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:47:39,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:47:39,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:47:39,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:47:39,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:47:39,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:47:39,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:47:39,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:47:39,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:47:39,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:47:39,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:47:39,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:47:39,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:47:39,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:47:39,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:47:39,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:47:39,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:47:39,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:47:39,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:47:39,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:47:39,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:47:39,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:47:39,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:47:39,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:47:39,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:47:39,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:47:39,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:47:39,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:47:39,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:47:39,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:47:39,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:47:39,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:47:39,098 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 02:47:39,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:47:39,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:47:39,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:47:39,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:47:39,121 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:47:39,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:47:39,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:47:39,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:47:39,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:47:39,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:47:39,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:47:39,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:47:39,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:47:39,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:47:39,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:47:39,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:47:39,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:47:39,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:47:39,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:47:39,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:47:39,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:47:39,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:47:39,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:47:39,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:47:39,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:47:39,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:47:39,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:47:39,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:47:39,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:47:39,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:47:39,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:47:39,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:47:39,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:47:39,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:47:39,452 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:47:39,453 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-04-18 02:47:39,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd719d6a/6f1d5484322a4850aaf162bc605c07a5/FLAGd196fceb7 [2020-04-18 02:47:40,089 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:47:40,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-04-18 02:47:40,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd719d6a/6f1d5484322a4850aaf162bc605c07a5/FLAGd196fceb7 [2020-04-18 02:47:40,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd719d6a/6f1d5484322a4850aaf162bc605c07a5 [2020-04-18 02:47:40,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:47:40,389 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:47:40,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:47:40,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:47:40,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:47:40,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:47:40" (1/1) ... [2020-04-18 02:47:40,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362ef4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:40, skipping insertion in model container [2020-04-18 02:47:40,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:47:40" (1/1) ... [2020-04-18 02:47:40,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:47:40,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:47:40,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:47:40,941 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:47:41,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:47:41,075 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:47:41,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41 WrapperNode [2020-04-18 02:47:41,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:47:41,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:47:41,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:47:41,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:47:41,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:47:41,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:47:41,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:47:41,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:47:41,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (1/1) ... [2020-04-18 02:47:41,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:47:41,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:47:41,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:47:41,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:47:41,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (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 02:47:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:47:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:47:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:47:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:47:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:47:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:47:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:47:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:47:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:47:41,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:47:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:47:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:47:41,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:47:41,240 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 02:47:41,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:47:41,636 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:47:41,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:47:41 BoogieIcfgContainer [2020-04-18 02:47:41,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:47:41,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:47:41,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:47:41,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:47:41,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:47:40" (1/3) ... [2020-04-18 02:47:41,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294d3496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:47:41, skipping insertion in model container [2020-04-18 02:47:41,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:47:41" (2/3) ... [2020-04-18 02:47:41,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294d3496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:47:41, skipping insertion in model container [2020-04-18 02:47:41,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:47:41" (3/3) ... [2020-04-18 02:47:41,650 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-04-18 02:47:41,660 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:47:41,660 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:47:41,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:47:41,668 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:47:41,695 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,695 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,695 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,696 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,696 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,697 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,697 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,698 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,698 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,698 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,699 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,699 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,699 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,700 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,700 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,700 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,700 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,701 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,705 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,705 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,706 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,706 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,720 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,722 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,722 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,723 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,725 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,726 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,726 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,727 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:47:41,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:47:41,760 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:47:41,761 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:47:41,761 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:47:41,761 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:47:41,761 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:47:41,761 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:47:41,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:47:41,762 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:47:41,779 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:47:41,781 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:47:41,827 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:47:41,827 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:47:41,833 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:47:41,838 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:47:41,871 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:47:41,872 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:47:41,872 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:47:41,874 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:47:41,875 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:47:43,092 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:47:43,332 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-04-18 02:47:43,434 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-04-18 02:47:43,435 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 02:47:43,439 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 02:47:43,466 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:47:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:47:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:47:43,476 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:47:43,477 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:47:43,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:47:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:47:43,484 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-04-18 02:47:43,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:47:43,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678848988] [2020-04-18 02:47:43,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:47:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:47:43,723 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 02:47:43,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678848988] [2020-04-18 02:47:43,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:47:43,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:47:43,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091662374] [2020-04-18 02:47:43,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:47:43,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:47:43,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:47:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:47:43,749 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:47:43,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:47:43,825 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-18 02:47:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:47:43,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:47:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:47:43,860 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:47:43,860 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 02:47:43,864 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 02:47:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 02:47:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 02:47:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 02:47:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-18 02:47:43,941 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-18 02:47:43,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:47:43,942 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-18 02:47:43,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:47:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-18 02:47:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:47:43,944 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:47:43,944 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:47:43,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:47:43,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:47:43,945 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-04-18 02:47:43,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:47:43,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994186914] [2020-04-18 02:47:43,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:47:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:47:44,052 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 02:47:44,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994186914] [2020-04-18 02:47:44,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:47:44,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:47:44,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077172458] [2020-04-18 02:47:44,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:47:44,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:47:44,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:47:44,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:47:44,063 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-18 02:47:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:47:44,083 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-04-18 02:47:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:47:44,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:47:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:47:44,090 INFO L225 Difference]: With dead ends: 220 [2020-04-18 02:47:44,091 INFO L226 Difference]: Without dead ends: 220 [2020-04-18 02:47:44,092 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 02:47:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-04-18 02:47:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-04-18 02:47:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-04-18 02:47:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-04-18 02:47:44,126 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-04-18 02:47:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:47:44,127 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-04-18 02:47:44,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:47:44,127 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-04-18 02:47:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:47:44,129 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:47:44,129 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:47:44,129 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:47:44,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:47:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-04-18 02:47:44,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:47:44,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693434338] [2020-04-18 02:47:44,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:47:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:47:44,233 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 02:47:44,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693434338] [2020-04-18 02:47:44,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:47:44,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:47:44,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160463447] [2020-04-18 02:47:44,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:47:44,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:47:44,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:47:44,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:47:44,236 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-04-18 02:47:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:47:44,291 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-04-18 02:47:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:47:44,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:47:44,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:47:44,294 INFO L225 Difference]: With dead ends: 240 [2020-04-18 02:47:44,294 INFO L226 Difference]: Without dead ends: 176 [2020-04-18 02:47:44,295 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 02:47:44,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-04-18 02:47:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-04-18 02:47:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-04-18 02:47:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-04-18 02:47:44,315 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-04-18 02:47:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:47:44,315 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-04-18 02:47:44,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:47:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-04-18 02:47:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:47:44,317 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:47:44,317 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:47:44,317 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:47:44,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:47:44,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-04-18 02:47:44,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:47:44,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589816107] [2020-04-18 02:47:44,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:47:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:47:44,387 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 02:47:44,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589816107] [2020-04-18 02:47:44,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:47:44,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:47:44,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537071880] [2020-04-18 02:47:44,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:47:44,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:47:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:47:44,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:47:44,389 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-04-18 02:47:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:47:44,399 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-04-18 02:47:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:47:44,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 02:47:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:47:44,401 INFO L225 Difference]: With dead ends: 225 [2020-04-18 02:47:44,401 INFO L226 Difference]: Without dead ends: 183 [2020-04-18 02:47:44,402 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 02:47:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-04-18 02:47:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-04-18 02:47:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 02:47:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-04-18 02:47:44,411 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-04-18 02:47:44,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:47:44,412 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-04-18 02:47:44,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:47:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-04-18 02:47:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:47:44,413 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:47:44,413 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:47:44,413 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:47:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:47:44,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-04-18 02:47:44,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:47:44,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008644897] [2020-04-18 02:47:44,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:47:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:47:44,483 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 02:47:44,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008644897] [2020-04-18 02:47:44,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:47:44,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:47:44,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247917439] [2020-04-18 02:47:44,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:47:44,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:47:44,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:47:44,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:47:44,486 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 5 states. [2020-04-18 02:47:44,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:47:44,532 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-04-18 02:47:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:47:44,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:47:44,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:47:44,533 INFO L225 Difference]: With dead ends: 162 [2020-04-18 02:47:44,533 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 02:47:44,534 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 02:47:44,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 02:47:44,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 02:47:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 02:47:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-04-18 02:47:44,546 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-04-18 02:47:44,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:47:44,547 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-04-18 02:47:44,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:47:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-04-18 02:47:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:47:44,549 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:47:44,549 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:47:44,550 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:47:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:47:44,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-04-18 02:47:44,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:47:44,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466783015] [2020-04-18 02:47:44,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:47:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:47:44,623 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 02:47:44,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466783015] [2020-04-18 02:47:44,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:47:44,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:47:44,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470869787] [2020-04-18 02:47:44,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:47:44,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:47:44,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:47:44,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:47:44,625 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-04-18 02:47:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:47:44,637 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-04-18 02:47:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:47:44,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:47:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:47:44,640 INFO L225 Difference]: With dead ends: 157 [2020-04-18 02:47:44,640 INFO L226 Difference]: Without dead ends: 120 [2020-04-18 02:47:44,640 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 02:47:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-04-18 02:47:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-04-18 02:47:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-04-18 02:47:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-04-18 02:47:44,646 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-04-18 02:47:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:47:44,647 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-04-18 02:47:44,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:47:44,647 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-04-18 02:47:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:47:44,652 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:47:44,655 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:47:44,655 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:47:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:47:44,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-04-18 02:47:44,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:47:44,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013649125] [2020-04-18 02:47:44,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:47:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:47:44,755 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 02:47:44,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013649125] [2020-04-18 02:47:44,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:47:44,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:47:44,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104021046] [2020-04-18 02:47:44,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:47:44,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:47:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:47:44,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:47:44,759 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 6 states. [2020-04-18 02:47:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:47:44,826 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-04-18 02:47:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:47:44,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 02:47:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:47:44,828 INFO L225 Difference]: With dead ends: 112 [2020-04-18 02:47:44,828 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:47:44,829 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 02:47:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:47:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:47:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:47:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 02:47:44,855 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-04-18 02:47:44,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:47:44,856 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 02:47:44,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:47:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 02:47:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:47:44,857 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:47:44,857 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 02:47:44,857 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:47:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:47:44,858 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-04-18 02:47:44,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:47:44,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771726673] [2020-04-18 02:47:44,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:47:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:47:44,910 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 02:47:44,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771726673] [2020-04-18 02:47:44,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:47:44,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:47:44,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393384248] [2020-04-18 02:47:44,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:47:44,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:47:44,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:47:44,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:47:44,912 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-18 02:47:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:47:44,924 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 02:47:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:47:44,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:47:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:47:44,925 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:47:44,925 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:47:44,926 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 02:47:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:47:44,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:47:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:47:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:47:44,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:47:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:47:44,927 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:47:44,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:47:44,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:47:44,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:47:44,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:47:44 BasicIcfg [2020-04-18 02:47:44,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:47:44,940 INFO L168 Benchmark]: Toolchain (without parser) took 4564.04 ms. Allocated memory was 138.9 MB in the beginning and 245.4 MB in the end (delta: 106.4 MB). Free memory was 102.2 MB in the beginning and 203.4 MB in the end (delta: -101.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:47:44,941 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:47:44,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.90 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 160.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:47:44,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.27 ms. Allocated memory is still 203.9 MB. Free memory was 160.4 MB in the beginning and 158.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:47:44,950 INFO L168 Benchmark]: Boogie Preprocessor took 28.25 ms. Allocated memory is still 203.9 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:47:44,953 INFO L168 Benchmark]: RCFGBuilder took 485.15 ms. Allocated memory is still 203.9 MB. Free memory was 156.6 MB in the beginning and 134.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:47:44,954 INFO L168 Benchmark]: TraceAbstraction took 3289.76 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 133.8 MB in the beginning and 203.4 MB in the end (delta: -69.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:47:44,959 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 685.90 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 160.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.27 ms. Allocated memory is still 203.9 MB. Free memory was 160.4 MB in the beginning and 158.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.25 ms. Allocated memory is still 203.9 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.15 ms. Allocated memory is still 203.9 MB. Free memory was 156.6 MB in the beginning and 134.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3289.76 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 133.8 MB in the beginning and 203.4 MB in the end (delta: -69.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 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: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 157 SDtfs, 114 SDslu, 178 SDs, 0 SdLazy, 97 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 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, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2567 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...