/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/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:17:06,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:17:06,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:17:07,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:17:07,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:17:07,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:17:07,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:17:07,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:17:07,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:17:07,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:17:07,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:17:07,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:17:07,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:17:07,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:17:07,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:17:07,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:17:07,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:17:07,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:17:07,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:17:07,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:17:07,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:17:07,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:17:07,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:17:07,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:17:07,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 23:17:07,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:17:07,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:17:07,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:17:07,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:17:07,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:17:07,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:17:07,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:17:07,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:17:07,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:17:07,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:17:07,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:17:07,059 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 [2020-09-15 23:17:07,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:17:07,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:17:07,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:17:07,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:17:07,094 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:17:07,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:17:07,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:17:07,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:17:07,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:17:07,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:17:07,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:17:07,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:17:07,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:17:07,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:17:07,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:17:07,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:17:07,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:17:07,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:17:07,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:17:07,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:17:07,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:17:07,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:17:07,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:17:07,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:17:07,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:17:07,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:17:07,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:17:07,101 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:17:07,101 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:17:07,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:17:07,101 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:17:07,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:17:07,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:17:07,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:17:07,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:17:07,662 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:17:07,664 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-09-15 23:17:07,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d734ca8ca/bf9b1029941c41beb8da5e2beb7cd869/FLAG900260f32 [2020-09-15 23:17:08,437 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:17:08,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-09-15 23:17:08,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d734ca8ca/bf9b1029941c41beb8da5e2beb7cd869/FLAG900260f32 [2020-09-15 23:17:08,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d734ca8ca/bf9b1029941c41beb8da5e2beb7cd869 [2020-09-15 23:17:08,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:17:08,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:17:08,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:17:08,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:17:08,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:17:08,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:17:08" (1/1) ... [2020-09-15 23:17:08,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b5c142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:08, skipping insertion in model container [2020-09-15 23:17:08,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:17:08" (1/1) ... [2020-09-15 23:17:08,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:17:08,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:17:09,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:17:09,418 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:17:09,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:17:09,571 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:17:09,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09 WrapperNode [2020-09-15 23:17:09,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:17:09,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:17:09,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:17:09,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:17:09,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:17:09,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:17:09,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:17:09,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:17:09,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (1/1) ... [2020-09-15 23:17:09,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:17:09,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:17:09,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:17:09,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:17:09,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (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 [2020-09-15 23:17:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:17:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:17:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:17:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:17:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:17:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:17:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:17:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:17:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:17:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:17:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:17:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:17:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:17:09,760 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:17:10,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:17:10,208 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:17:10,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:17:10 BoogieIcfgContainer [2020-09-15 23:17:10,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:17:10,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:17:10,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:17:10,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:17:10,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:17:08" (1/3) ... [2020-09-15 23:17:10,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439a56ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:17:10, skipping insertion in model container [2020-09-15 23:17:10,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:17:09" (2/3) ... [2020-09-15 23:17:10,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439a56ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:17:10, skipping insertion in model container [2020-09-15 23:17:10,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:17:10" (3/3) ... [2020-09-15 23:17:10,232 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-09-15 23:17:10,245 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:17:10,245 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:17:10,256 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:17:10,257 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:17:10,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,288 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,288 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,298 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,298 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,299 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,299 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,315 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:17:10,345 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:17:10,370 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:17:10,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:17:10,371 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:17:10,371 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:17:10,371 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:17:10,371 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:17:10,371 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:17:10,372 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:17:10,390 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-15 23:17:10,393 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-15 23:17:10,446 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-15 23:17:10,446 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:17:10,453 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-15 23:17:10,456 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-15 23:17:10,477 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-15 23:17:10,477 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:17:10,478 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-15 23:17:10,480 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-09-15 23:17:10,482 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:17:11,977 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-09-15 23:17:11,978 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-09-15 23:17:11,982 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-15 23:17:12,007 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-09-15 23:17:12,009 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-09-15 23:17:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:17:12,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:17:12,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:17:12,021 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:17:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:17:12,029 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-09-15 23:17:12,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:17:12,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987119145] [2020-09-15 23:17:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:17:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:17:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:17:12,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987119145] [2020-09-15 23:17:12,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:17:12,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:17:12,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [43380242] [2020-09-15 23:17:12,326 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:17:12,330 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:17:12,349 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:17:12,349 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:17:12,352 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:17:12,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:17:12,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:17:12,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:17:12,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:17:12,379 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-09-15 23:17:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:17:12,430 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-09-15 23:17:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:17:12,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-15 23:17:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:17:12,462 INFO L225 Difference]: With dead ends: 222 [2020-09-15 23:17:12,463 INFO L226 Difference]: Without dead ends: 174 [2020-09-15 23:17:12,465 INFO L675 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 [2020-09-15 23:17:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-15 23:17:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-15 23:17:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-15 23:17:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-09-15 23:17:12,538 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-09-15 23:17:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:17:12,539 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-09-15 23:17:12,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:17:12,540 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-09-15 23:17:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:17:12,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:17:12,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:17:12,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:17:12,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:17:12,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:17:12,542 INFO L82 PathProgramCache]: Analyzing trace with hash -273417231, now seen corresponding path program 1 times [2020-09-15 23:17:12,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:17:12,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227741540] [2020-09-15 23:17:12,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:17:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:17:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:17:12,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227741540] [2020-09-15 23:17:12,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:17:12,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:17:12,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [925738446] [2020-09-15 23:17:12,637 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:17:12,638 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:17:12,640 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-15 23:17:12,641 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:17:12,690 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:17:12,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:17:12,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:17:12,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:17:12,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:17:12,693 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 3 states. [2020-09-15 23:17:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:17:12,706 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-09-15 23:17:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:17:12,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-15 23:17:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:17:12,709 INFO L225 Difference]: With dead ends: 168 [2020-09-15 23:17:12,709 INFO L226 Difference]: Without dead ends: 168 [2020-09-15 23:17:12,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:17:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-15 23:17:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-09-15 23:17:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-15 23:17:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-09-15 23:17:12,737 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-09-15 23:17:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:17:12,737 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-09-15 23:17:12,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:17:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-09-15 23:17:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 23:17:12,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:17:12,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:17:12,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:17:12,741 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:17:12,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:17:12,742 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-09-15 23:17:12,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:17:12,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264393057] [2020-09-15 23:17:12,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:17:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:17:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:17:12,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264393057] [2020-09-15 23:17:12,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:17:12,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:17:12,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [409694683] [2020-09-15 23:17:12,871 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:17:12,875 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:17:12,878 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-15 23:17:12,878 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:17:12,920 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:17:12,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:17:12,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:17:12,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:17:12,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:17:12,922 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 3 states. [2020-09-15 23:17:12,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:17:12,929 INFO L93 Difference]: Finished difference Result 162 states and 422 transitions. [2020-09-15 23:17:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:17:12,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-15 23:17:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:17:12,932 INFO L225 Difference]: With dead ends: 162 [2020-09-15 23:17:12,932 INFO L226 Difference]: Without dead ends: 162 [2020-09-15 23:17:12,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:17:12,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-15 23:17:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-15 23:17:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-15 23:17:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 422 transitions. [2020-09-15 23:17:12,948 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 422 transitions. Word has length 10 [2020-09-15 23:17:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:17:12,948 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 422 transitions. [2020-09-15 23:17:12,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:17:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 422 transitions. [2020-09-15 23:17:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:17:12,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:17:12,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:17:12,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:17:12,951 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:17:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:17:12,951 INFO L82 PathProgramCache]: Analyzing trace with hash -760979570, now seen corresponding path program 1 times [2020-09-15 23:17:12,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:17:12,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488709194] [2020-09-15 23:17:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:17:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:17:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:17:13,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488709194] [2020-09-15 23:17:13,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:17:13,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:17:13,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1912686342] [2020-09-15 23:17:13,017 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:17:13,019 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:17:13,021 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-09-15 23:17:13,022 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:17:13,107 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:17:13,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:17:13,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:17:13,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:17:13,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:17:13,108 INFO L87 Difference]: Start difference. First operand 162 states and 422 transitions. Second operand 4 states. [2020-09-15 23:17:13,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:17:13,141 INFO L93 Difference]: Finished difference Result 234 states and 596 transitions. [2020-09-15 23:17:13,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:17:13,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-15 23:17:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:17:13,144 INFO L225 Difference]: With dead ends: 234 [2020-09-15 23:17:13,144 INFO L226 Difference]: Without dead ends: 132 [2020-09-15 23:17:13,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:17:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-15 23:17:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-09-15 23:17:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-15 23:17:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-09-15 23:17:13,156 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 11 [2020-09-15 23:17:13,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:17:13,156 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-09-15 23:17:13,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:17:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-09-15 23:17:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:17:13,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:17:13,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:17:13,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:17:13,158 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:17:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:17:13,159 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 2 times [2020-09-15 23:17:13,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:17:13,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536445330] [2020-09-15 23:17:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:17:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:17:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:17:13,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536445330] [2020-09-15 23:17:13,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:17:13,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:17:13,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1339845718] [2020-09-15 23:17:13,278 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:17:13,281 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:17:13,284 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-09-15 23:17:13,284 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:17:13,369 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:17:13,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:17:13,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:17:13,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:17:13,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:17:13,370 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-09-15 23:17:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:17:13,396 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-09-15 23:17:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:17:13,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-15 23:17:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:17:13,397 INFO L225 Difference]: With dead ends: 144 [2020-09-15 23:17:13,398 INFO L226 Difference]: Without dead ends: 60 [2020-09-15 23:17:13,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:17:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-15 23:17:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-15 23:17:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-15 23:17:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-09-15 23:17:13,413 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-09-15 23:17:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:17:13,413 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-09-15 23:17:13,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:17:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-09-15 23:17:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:17:13,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:17:13,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:17:13,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:17:13,416 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:17:13,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:17:13,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-09-15 23:17:13,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:17:13,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86011015] [2020-09-15 23:17:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:17:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:17:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:17:13,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86011015] [2020-09-15 23:17:13,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:17:13,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:17:13,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1020414184] [2020-09-15 23:17:13,504 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:17:13,506 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:17:13,508 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-09-15 23:17:13,508 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:17:13,566 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:17:13,590 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:17:13,604 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:17:13,616 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:17:13,622 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2894#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-15 23:17:13,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:17:13,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:17:13,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:17:13,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:17:13,624 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 5 states. [2020-09-15 23:17:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:17:13,681 INFO L93 Difference]: Finished difference Result 59 states and 111 transitions. [2020-09-15 23:17:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:17:13,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-15 23:17:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:17:13,683 INFO L225 Difference]: With dead ends: 59 [2020-09-15 23:17:13,683 INFO L226 Difference]: Without dead ends: 38 [2020-09-15 23:17:13,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:17:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-15 23:17:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-15 23:17:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-15 23:17:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-09-15 23:17:13,687 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 12 [2020-09-15 23:17:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:17:13,687 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-09-15 23:17:13,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:17:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-09-15 23:17:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:17:13,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:17:13,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:17:13,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:17:13,689 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:17:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:17:13,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-09-15 23:17:13,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:17:13,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244512727] [2020-09-15 23:17:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:17:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:17:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:17:13,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244512727] [2020-09-15 23:17:13,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:17:13,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 23:17:13,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [107709179] [2020-09-15 23:17:13,767 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:17:13,769 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:17:13,772 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-09-15 23:17:13,772 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:17:13,780 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:17:13,812 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [3040#(not (= 3 ~__unbuffered_cnt~0)), 3041#(not (= ~__unbuffered_cnt~0 2)), 3042#(not (= ~__unbuffered_cnt~0 1))] [2020-09-15 23:17:13,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 23:17:13,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:17:13,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 23:17:13,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-15 23:17:13,813 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-09-15 23:17:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:17:13,875 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-09-15 23:17:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:17:13,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-09-15 23:17:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:17:13,876 INFO L225 Difference]: With dead ends: 35 [2020-09-15 23:17:13,876 INFO L226 Difference]: Without dead ends: 29 [2020-09-15 23:17:13,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-15 23:17:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-15 23:17:13,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-15 23:17:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-15 23:17:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-09-15 23:17:13,879 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-09-15 23:17:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:17:13,880 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-09-15 23:17:13,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 23:17:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-09-15 23:17:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-15 23:17:13,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:17:13,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:17:13,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:17:13,881 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:17:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:17:13,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-09-15 23:17:13,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:17:13,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670426697] [2020-09-15 23:17:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:17:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:17:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:17:13,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670426697] [2020-09-15 23:17:13,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:17:13,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:17:13,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [962472667] [2020-09-15 23:17:13,925 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:17:13,926 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:17:13,930 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-09-15 23:17:13,931 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:17:13,940 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:17:13,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:17:13,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:17:13,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:17:13,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:17:13,942 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-09-15 23:17:13,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:17:13,948 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-09-15 23:17:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:17:13,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-15 23:17:13,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:17:13,949 INFO L225 Difference]: With dead ends: 28 [2020-09-15 23:17:13,950 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:17:13,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:17:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:17:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:17:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:17:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:17:13,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-15 23:17:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:17:13,951 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:17:13,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:17:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:17:13,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:17:13,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 23:17:13,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:17:13 BasicIcfg [2020-09-15 23:17:13,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:17:13,960 INFO L168 Benchmark]: Toolchain (without parser) took 5264.75 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 100.2 MB in the beginning and 157.7 MB in the end (delta: -57.5 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:17:13,961 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-15 23:17:13,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 868.55 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 158.1 MB in the end (delta: -58.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-15 23:17:13,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.92 ms. Allocated memory is still 201.9 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:17:13,964 INFO L168 Benchmark]: Boogie Preprocessor took 29.90 ms. Allocated memory is still 201.9 MB. Free memory was 156.1 MB in the beginning and 154.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:17:13,965 INFO L168 Benchmark]: RCFGBuilder took 555.77 ms. Allocated memory is still 201.9 MB. Free memory was 154.1 MB in the beginning and 132.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-15 23:17:13,966 INFO L168 Benchmark]: TraceAbstraction took 3737.75 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 132.4 MB in the beginning and 157.7 MB in the end (delta: -25.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:17:13,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 868.55 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 158.1 MB in the end (delta: -58.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.92 ms. Allocated memory is still 201.9 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.90 ms. Allocated memory is still 201.9 MB. Free memory was 156.1 MB in the beginning and 154.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 555.77 ms. Allocated memory is still 201.9 MB. Free memory was 154.1 MB in the beginning and 132.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3737.75 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 132.4 MB in the beginning and 157.7 MB in the end (delta: -25.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 606 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 125 SDtfs, 109 SDslu, 121 SDs, 0 SdLazy, 85 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2691 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...