/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:13:57,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:13:57,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:13:57,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:13:57,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:13:57,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:13:57,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:13:57,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:13:57,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:13:57,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:13:57,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:13:57,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:13:57,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:13:57,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:13:57,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:13:57,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:13:57,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:13:57,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:13:57,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:13:57,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:13:57,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:13:57,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:13:57,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:13:57,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:13:57,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:13:57,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:13:57,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:13:57,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:13:57,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:13:57,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:13:57,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:13:57,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:13:57,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:13:57,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:13:57,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:13:57,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:13:57,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:13:57,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:13:57,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:13:57,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:13:57,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:13:57,269 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:13:57,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:13:57,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:13:57,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:13:57,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:13:57,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:13:57,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:13:57,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:13:57,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:13:57,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:13:57,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:13:57,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:13:57,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:13:57,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:13:57,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:13:57,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:13:57,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:13:57,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:13:57,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:13:57,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:13:57,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:13:57,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:13:57,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:13:57,275 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:13:57,275 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:13:57,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:13:57,276 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:13:57,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:13:57,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:13:57,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:13:57,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:13:57,770 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:13:57,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i [2020-09-12 00:13:57,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/535b8bd60/86fec487deb04d5fa70e96e34ffaa112/FLAG55f3dc14e [2020-09-12 00:13:58,491 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:13:58,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i [2020-09-12 00:13:58,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/535b8bd60/86fec487deb04d5fa70e96e34ffaa112/FLAG55f3dc14e [2020-09-12 00:13:58,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/535b8bd60/86fec487deb04d5fa70e96e34ffaa112 [2020-09-12 00:13:58,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:13:58,762 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:13:58,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:13:58,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:13:58,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:13:58,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:13:58" (1/1) ... [2020-09-12 00:13:58,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:58, skipping insertion in model container [2020-09-12 00:13:58,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:13:58" (1/1) ... [2020-09-12 00:13:58,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:13:58,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:13:59,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:13:59,412 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:13:59,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:13:59,586 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:13:59,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59 WrapperNode [2020-09-12 00:13:59,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:13:59,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:13:59,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:13:59,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:13:59,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:13:59,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:13:59,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:13:59,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:13:59,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... [2020-09-12 00:13:59,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:13:59,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:13:59,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:13:59,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:13:59,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-12 00:13:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:13:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:13:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:13:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:13:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:13:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:13:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:13:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:13:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:13:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:13:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:13:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:13:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:13:59,772 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:14:00,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:14:00,120 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:14:00,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:14:00 BoogieIcfgContainer [2020-09-12 00:14:00,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:14:00,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:14:00,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:14:00,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:14:00,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:13:58" (1/3) ... [2020-09-12 00:14:00,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f58be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:14:00, skipping insertion in model container [2020-09-12 00:14:00,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:59" (2/3) ... [2020-09-12 00:14:00,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f58be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:14:00, skipping insertion in model container [2020-09-12 00:14:00,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:14:00" (3/3) ... [2020-09-12 00:14:00,135 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_power.opt.i [2020-09-12 00:14:00,152 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:14:00,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:14:00,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:14:00,179 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:14:00,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,217 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,217 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,219 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,219 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,219 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,219 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,220 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,220 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,225 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,226 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,234 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,236 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:00,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:14:00,290 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:14:00,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:14:00,291 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:14:00,291 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:14:00,291 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:14:00,291 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:14:00,291 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:14:00,292 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:14:00,310 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-09-12 00:14:00,312 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-12 00:14:00,362 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-12 00:14:00,363 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:14:00,369 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:14:00,372 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-12 00:14:00,397 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-12 00:14:00,397 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:14:00,398 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:14:00,400 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-12 00:14:00,402 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:14:01,570 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-12 00:14:01,683 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-09-12 00:14:01,683 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-12 00:14:01,688 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-12 00:14:01,742 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-12 00:14:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-12 00:14:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:14:01,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:01,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:01,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:01,768 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-09-12 00:14:01,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:01,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51116703] [2020-09-12 00:14:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:02,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51116703] [2020-09-12 00:14:02,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:02,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:14:02,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1935112906] [2020-09-12 00:14:02,019 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:02,023 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:02,041 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:14:02,041 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:02,044 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:02,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-12 00:14:02,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-12 00:14:02,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:14:02,066 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-12 00:14:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:02,092 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-12 00:14:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-12 00:14:02,094 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-12 00:14:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:02,116 INFO L225 Difference]: With dead ends: 362 [2020-09-12 00:14:02,116 INFO L226 Difference]: Without dead ends: 298 [2020-09-12 00:14:02,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:14:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-12 00:14:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-12 00:14:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-12 00:14:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-12 00:14:02,203 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-12 00:14:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:02,205 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-12 00:14:02,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-12 00:14:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-12 00:14:02,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:14:02,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:02,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:02,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:14:02,211 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:02,211 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-09-12 00:14:02,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:02,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938056157] [2020-09-12 00:14:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:02,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938056157] [2020-09-12 00:14:02,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:02,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:14:02,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1295012179] [2020-09-12 00:14:02,343 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:02,344 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:02,346 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:14:02,346 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:02,347 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:02,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:14:02,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:02,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:14:02,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:14:02,352 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-09-12 00:14:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:02,390 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-09-12 00:14:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:14:02,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:14:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:02,393 INFO L225 Difference]: With dead ends: 217 [2020-09-12 00:14:02,393 INFO L226 Difference]: Without dead ends: 217 [2020-09-12 00:14:02,394 INFO L675 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 [2020-09-12 00:14:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-12 00:14:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-09-12 00:14:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-12 00:14:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-09-12 00:14:02,435 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-09-12 00:14:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:02,439 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-09-12 00:14:02,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:14:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-09-12 00:14:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:14:02,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:02,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:02,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:14:02,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-09-12 00:14:02,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:02,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625076501] [2020-09-12 00:14:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:02,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625076501] [2020-09-12 00:14:02,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:02,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:14:02,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1364670636] [2020-09-12 00:14:02,538 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:02,540 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:02,543 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-09-12 00:14:02,543 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:02,677 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2424#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:14:02,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:14:02,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:02,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:14:02,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:02,678 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-09-12 00:14:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:02,708 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-09-12 00:14:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:14:02,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-12 00:14:02,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:02,710 INFO L225 Difference]: With dead ends: 136 [2020-09-12 00:14:02,711 INFO L226 Difference]: Without dead ends: 136 [2020-09-12 00:14:02,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:02,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-12 00:14:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-09-12 00:14:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-12 00:14:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-09-12 00:14:02,719 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-09-12 00:14:02,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:02,719 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-09-12 00:14:02,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:14:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-09-12 00:14:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-12 00:14:02,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:02,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:02,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:14:02,722 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:02,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:02,723 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-09-12 00:14:02,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:02,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413094770] [2020-09-12 00:14:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:02,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413094770] [2020-09-12 00:14:02,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:02,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:14:02,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [730452540] [2020-09-12 00:14:02,809 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:02,811 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:02,815 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-09-12 00:14:02,815 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:02,978 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2838#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:14:02,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:14:02,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:02,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:14:02,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:14:02,980 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-09-12 00:14:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:03,013 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-09-12 00:14:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:14:03,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-12 00:14:03,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:03,014 INFO L225 Difference]: With dead ends: 109 [2020-09-12 00:14:03,015 INFO L226 Difference]: Without dead ends: 109 [2020-09-12 00:14:03,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:14:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-12 00:14:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-09-12 00:14:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-12 00:14:03,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-09-12 00:14:03,021 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-09-12 00:14:03,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:03,021 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-09-12 00:14:03,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:14:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-09-12 00:14:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:14:03,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:03,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:03,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:14:03,024 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:03,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-09-12 00:14:03,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:03,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877796458] [2020-09-12 00:14:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:03,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877796458] [2020-09-12 00:14:03,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:03,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:14:03,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1419883994] [2020-09-12 00:14:03,130 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:03,132 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:03,140 INFO L274 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-09-12 00:14:03,140 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:03,329 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:03,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:14:03,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:03,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:14:03,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:03,331 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-09-12 00:14:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:03,388 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-09-12 00:14:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:14:03,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:14:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:03,389 INFO L225 Difference]: With dead ends: 135 [2020-09-12 00:14:03,389 INFO L226 Difference]: Without dead ends: 55 [2020-09-12 00:14:03,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:14:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-12 00:14:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-12 00:14:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-12 00:14:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-12 00:14:03,399 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-09-12 00:14:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:03,399 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-12 00:14:03,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:14:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-12 00:14:03,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:14:03,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:03,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:03,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:14:03,403 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash -442498565, now seen corresponding path program 2 times [2020-09-12 00:14:03,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:03,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957794450] [2020-09-12 00:14:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:03,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957794450] [2020-09-12 00:14:03,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:03,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:14:03,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1487858429] [2020-09-12 00:14:03,545 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:03,547 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:03,551 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 26 transitions. [2020-09-12 00:14:03,551 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:03,561 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:03,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:14:03,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:03,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:14:03,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:03,563 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-09-12 00:14:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:03,602 INFO L93 Difference]: Finished difference Result 75 states and 132 transitions. [2020-09-12 00:14:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:14:03,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:14:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:03,604 INFO L225 Difference]: With dead ends: 75 [2020-09-12 00:14:03,604 INFO L226 Difference]: Without dead ends: 37 [2020-09-12 00:14:03,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:14:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-12 00:14:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-12 00:14:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-12 00:14:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-09-12 00:14:03,608 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-09-12 00:14:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:03,608 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-09-12 00:14:03,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:14:03,608 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-09-12 00:14:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:14:03,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:03,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:03,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:14:03,611 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:03,611 INFO L82 PathProgramCache]: Analyzing trace with hash 21041593, now seen corresponding path program 3 times [2020-09-12 00:14:03,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:03,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781907451] [2020-09-12 00:14:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:03,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781907451] [2020-09-12 00:14:03,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:03,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:14:03,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [785602509] [2020-09-12 00:14:03,717 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:03,720 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:03,725 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-09-12 00:14:03,725 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:03,758 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:03,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:14:03,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:03,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:14:03,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:03,759 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-09-12 00:14:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:03,786 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-09-12 00:14:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:14:03,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:14:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:03,786 INFO L225 Difference]: With dead ends: 36 [2020-09-12 00:14:03,787 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:14:03,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:14:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:14:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:14:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:14:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:14:03,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-12 00:14:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:03,789 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:14:03,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:14:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:14:03,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:14:03,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:14:03,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:14:03 BasicIcfg [2020-09-12 00:14:03,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:14:03,797 INFO L168 Benchmark]: Toolchain (without parser) took 5039.46 ms. Allocated memory was 139.5 MB in the beginning and 249.6 MB in the end (delta: 110.1 MB). Free memory was 100.2 MB in the beginning and 161.9 MB in the end (delta: -61.7 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:03,798 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-12 00:14:03,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 825.78 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 161.3 MB in the end (delta: -61.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:03,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.14 ms. Allocated memory is still 203.4 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:03,801 INFO L168 Benchmark]: Boogie Preprocessor took 32.99 ms. Allocated memory is still 203.4 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:03,801 INFO L168 Benchmark]: RCFGBuilder took 447.59 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 135.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:03,802 INFO L168 Benchmark]: TraceAbstraction took 3667.91 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 134.8 MB in the beginning and 161.9 MB in the end (delta: -27.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:03,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 825.78 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 161.3 MB in the end (delta: -61.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.14 ms. Allocated memory is still 203.4 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.99 ms. Allocated memory is still 203.4 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.59 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 135.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3667.91 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 134.8 MB in the beginning and 161.9 MB in the end (delta: -27.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 640 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2315 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 138 SDtfs, 82 SDslu, 227 SDs, 0 SdLazy, 64 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...