/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-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:25:47,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:25:47,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:25:47,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:25:47,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:25:47,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:25:47,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:25:47,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:25:47,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:25:47,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:25:47,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:25:47,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:25:47,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:25:47,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:25:47,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:25:47,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:25:47,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:25:47,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:25:47,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:25:47,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:25:47,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:25:47,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:25:47,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:25:47,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:25:47,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:25:47,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:25:47,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:25:47,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:25:47,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:25:47,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:25:47,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:25:47,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:25:47,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:25:47,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:25:47,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:25:47,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:25:47,242 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 00:25:47,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:25:47,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:25:47,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:25:47,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:25:47,269 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:25:47,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:25:47,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:25:47,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:25:47,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:25:47,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:25:47,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:25:47,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:25:47,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:25:47,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:25:47,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:25:47,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:25:47,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:25:47,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:25:47,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:25:47,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:25:47,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:25:47,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:25:47,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:25:47,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:25:47,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:25:47,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:25:47,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:25:47,274 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:25:47,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:25:47,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:25:47,275 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:25:47,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:25:47,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:25:47,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:25:47,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:25:47,778 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:25:47,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-09-12 00:25:47,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a03c83d44/c8682a631e574d6e94c02150b360bc15/FLAGe829c682a [2020-09-12 00:25:48,571 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:25:48,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-09-12 00:25:48,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a03c83d44/c8682a631e574d6e94c02150b360bc15/FLAGe829c682a [2020-09-12 00:25:48,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a03c83d44/c8682a631e574d6e94c02150b360bc15 [2020-09-12 00:25:48,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:25:48,783 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:25:48,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:25:48,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:25:48,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:25:48,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:25:48" (1/1) ... [2020-09-12 00:25:48,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b940564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:48, skipping insertion in model container [2020-09-12 00:25:48,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:25:48" (1/1) ... [2020-09-12 00:25:48,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:25:48,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:25:49,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:25:49,474 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:25:49,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:25:49,642 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:25:49,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49 WrapperNode [2020-09-12 00:25:49,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:25:49,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:25:49,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:25:49,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:25:49,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:25:49,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:25:49,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:25:49,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:25:49,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (1/1) ... [2020-09-12 00:25:49,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:25:49,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:25:49,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:25:49,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:25:49,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (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 00:25:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-12 00:25:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-12 00:25:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:25:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-09-12 00:25:49,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-09-12 00:25:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:25:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:25:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:25:49,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:25:49,835 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 00:25:50,242 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:25:50,243 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-12 00:25:50,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:25:50 BoogieIcfgContainer [2020-09-12 00:25:50,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:25:50,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:25:50,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:25:50,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:25:50,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:25:48" (1/3) ... [2020-09-12 00:25:50,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1541ca88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:25:50, skipping insertion in model container [2020-09-12 00:25:50,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:25:49" (2/3) ... [2020-09-12 00:25:50,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1541ca88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:25:50, skipping insertion in model container [2020-09-12 00:25:50,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:25:50" (3/3) ... [2020-09-12 00:25:50,258 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2020-09-12 00:25:50,270 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:25:50,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:25:50,280 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:25:50,281 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:25:50,308 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,309 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,309 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,309 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,310 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,310 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,310 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,315 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,315 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,316 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,316 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,316 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:50,354 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-12 00:25:50,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:25:50,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:25:50,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:25:50,378 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:25:50,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:25:50,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:25:50,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:25:50,379 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:25:50,395 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-09-12 00:25:50,397 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-12 00:25:50,455 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-12 00:25:50,456 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-12 00:25:50,461 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-12 00:25:50,464 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-12 00:25:50,492 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-12 00:25:50,492 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-12 00:25:50,493 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-12 00:25:50,495 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2020-09-12 00:25:50,497 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:25:51,828 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-09-12 00:25:52,090 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-12 00:25:52,256 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-12 00:25:52,338 INFO L206 etLargeBlockEncoding]: Checked pairs total: 264 [2020-09-12 00:25:52,339 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2020-09-12 00:25:52,344 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-09-12 00:25:52,355 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-09-12 00:25:52,357 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-12 00:25:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-12 00:25:52,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:52,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-12 00:25:52,368 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:52,376 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-09-12 00:25:52,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:52,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987346814] [2020-09-12 00:25:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:52,611 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 00:25:52,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987346814] [2020-09-12 00:25:52,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:25:52,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:25:52,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [279992442] [2020-09-12 00:25:52,619 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:25:52,624 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:25:52,640 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-12 00:25:52,641 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:25:52,643 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:25:52,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:25:52,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:25:52,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:25:52,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:25:52,660 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-09-12 00:25:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:25:52,715 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-09-12 00:25:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:25:52,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-12 00:25:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:25:52,734 INFO L225 Difference]: With dead ends: 27 [2020-09-12 00:25:52,735 INFO L226 Difference]: Without dead ends: 23 [2020-09-12 00:25:52,737 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 00:25:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-12 00:25:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-12 00:25:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-12 00:25:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-09-12 00:25:52,785 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-09-12 00:25:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:25:52,786 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-09-12 00:25:52,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:25:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-09-12 00:25:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-12 00:25:52,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:52,788 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-12 00:25:52,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:25:52,788 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:52,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:52,789 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-09-12 00:25:52,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:52,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839736624] [2020-09-12 00:25:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:25:52,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:25:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:25:52,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:25:52,884 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-12 00:25:52,884 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-12 00:25:52,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:25:52,886 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-12 00:25:52,887 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-12 00:25:52,888 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-12 00:25:52,894 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,894 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,895 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,895 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,895 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,895 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,896 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,896 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,896 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,896 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,896 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,897 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,897 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,897 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,898 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,898 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,898 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,898 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,899 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,901 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,901 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,901 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,901 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:52,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-12 00:25:52,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:25:52,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:25:52,905 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:25:52,905 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:25:52,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:25:52,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:25:52,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:25:52,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:25:52,908 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-09-12 00:25:52,908 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-12 00:25:52,945 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-12 00:25:52,945 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-12 00:25:52,947 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-12 00:25:52,950 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-12 00:25:52,978 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-12 00:25:52,979 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-12 00:25:52,979 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-12 00:25:52,982 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2020-09-12 00:25:52,982 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:25:54,259 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-09-12 00:25:54,564 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-12 00:25:54,673 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-12 00:25:54,848 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-09-12 00:25:54,941 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1723 [2020-09-12 00:25:54,941 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-12 00:25:54,941 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-09-12 00:25:54,959 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-09-12 00:25:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-09-12 00:25:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-12 00:25:54,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:54,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-12 00:25:54,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:54,961 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-09-12 00:25:54,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:54,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788508029] [2020-09-12 00:25:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:55,009 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 00:25:55,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788508029] [2020-09-12 00:25:55,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:25:55,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:25:55,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [406794236] [2020-09-12 00:25:55,011 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:25:55,011 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:25:55,013 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-12 00:25:55,013 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:25:55,013 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:25:55,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:25:55,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:25:55,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:25:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:25:55,014 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-09-12 00:25:55,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:25:55,065 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-09-12 00:25:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:25:55,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-12 00:25:55,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:25:55,073 INFO L225 Difference]: With dead ends: 242 [2020-09-12 00:25:55,073 INFO L226 Difference]: Without dead ends: 216 [2020-09-12 00:25:55,073 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 00:25:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-12 00:25:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-12 00:25:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-12 00:25:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-09-12 00:25:55,106 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-09-12 00:25:55,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:25:55,106 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-09-12 00:25:55,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:25:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-09-12 00:25:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:25:55,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:55,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:25:55,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:25:55,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-09-12 00:25:55,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:55,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122564844] [2020-09-12 00:25:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:25:55,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122564844] [2020-09-12 00:25:55,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105115448] [2020-09-12 00:25:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:25:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:55,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-12 00:25:55,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:25:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:25:55,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-12 00:25:55,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-12 00:25:55,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1997409707] [2020-09-12 00:25:55,270 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:25:55,271 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:25:55,273 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:25:55,273 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:25:55,274 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:25:55,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:25:55,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:25:55,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:25:55,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:25:55,275 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 3 states. [2020-09-12 00:25:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:25:55,306 INFO L93 Difference]: Finished difference Result 241 states and 549 transitions. [2020-09-12 00:25:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:25:55,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:25:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:25:55,316 INFO L225 Difference]: With dead ends: 241 [2020-09-12 00:25:55,316 INFO L226 Difference]: Without dead ends: 241 [2020-09-12 00:25:55,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:25:55,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-12 00:25:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-09-12 00:25:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-12 00:25:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 549 transitions. [2020-09-12 00:25:55,368 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 549 transitions. Word has length 8 [2020-09-12 00:25:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:25:55,372 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 549 transitions. [2020-09-12 00:25:55,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:25:55,372 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 549 transitions. [2020-09-12 00:25:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:25:55,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:55,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:25:55,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:25:55,591 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1916569557, now seen corresponding path program 1 times [2020-09-12 00:25:55,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:55,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561606717] [2020-09-12 00:25:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:25:55,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561606717] [2020-09-12 00:25:55,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600445519] [2020-09-12 00:25:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:25:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:55,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-12 00:25:55,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:25:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:25:55,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:25:55,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-12 00:25:55,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [539552362] [2020-09-12 00:25:55,763 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:25:55,766 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:25:55,768 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:25:55,768 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:25:55,768 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:25:55,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:25:55,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:25:55,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:25:55,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:25:55,772 INFO L87 Difference]: Start difference. First operand 241 states and 549 transitions. Second operand 6 states. [2020-09-12 00:25:55,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:25:55,828 INFO L93 Difference]: Finished difference Result 241 states and 545 transitions. [2020-09-12 00:25:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:25:55,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-12 00:25:55,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:25:55,832 INFO L225 Difference]: With dead ends: 241 [2020-09-12 00:25:55,832 INFO L226 Difference]: Without dead ends: 241 [2020-09-12 00:25:55,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:25:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-12 00:25:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-09-12 00:25:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-12 00:25:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 545 transitions. [2020-09-12 00:25:55,874 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 545 transitions. Word has length 9 [2020-09-12 00:25:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:25:55,874 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 545 transitions. [2020-09-12 00:25:55,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:25:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 545 transitions. [2020-09-12 00:25:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-12 00:25:55,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:55,878 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-09-12 00:25:56,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:25:56,094 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:56,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-09-12 00:25:56,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:56,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197514018] [2020-09-12 00:25:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:25:56,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:25:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:25:56,137 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:25:56,144 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-12 00:25:56,144 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-12 00:25:56,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:25:56,145 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-12 00:25:56,145 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-12 00:25:56,147 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-12 00:25:56,154 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,154 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,155 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,155 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,155 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,155 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,155 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,156 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,156 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,156 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,156 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,157 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,157 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,157 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,157 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,157 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,158 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,158 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,158 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,158 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,159 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,159 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,159 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,159 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,160 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,160 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,161 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,162 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,162 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,162 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,162 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,164 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,164 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,164 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:56,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-12 00:25:56,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:25:56,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:25:56,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:25:56,170 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:25:56,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:25:56,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:25:56,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:25:56,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:25:56,172 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-09-12 00:25:56,173 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-12 00:25:56,250 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-12 00:25:56,250 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-12 00:25:56,252 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-12 00:25:56,265 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-12 00:25:56,298 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-12 00:25:56,298 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-12 00:25:56,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-12 00:25:56,305 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2020-09-12 00:25:56,305 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:25:57,548 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-09-12 00:25:57,756 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-12 00:25:57,864 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3028 [2020-09-12 00:25:57,864 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-12 00:25:57,864 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-09-12 00:25:57,915 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-09-12 00:25:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-09-12 00:25:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-12 00:25:57,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:57,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-12 00:25:57,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:57,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:57,917 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-09-12 00:25:57,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:57,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800372833] [2020-09-12 00:25:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:57,964 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 00:25:57,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800372833] [2020-09-12 00:25:57,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:25:57,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:25:57,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [178395604] [2020-09-12 00:25:57,965 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:25:57,965 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:25:57,966 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-12 00:25:57,966 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:25:57,966 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:25:57,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:25:57,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:25:57,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:25:57,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:25:57,967 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-09-12 00:25:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:25:58,000 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-09-12 00:25:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:25:58,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-12 00:25:58,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:25:58,011 INFO L225 Difference]: With dead ends: 1150 [2020-09-12 00:25:58,011 INFO L226 Difference]: Without dead ends: 1024 [2020-09-12 00:25:58,011 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 00:25:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-12 00:25:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-09-12 00:25:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-12 00:25:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-09-12 00:25:58,062 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-09-12 00:25:58,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:25:58,062 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-09-12 00:25:58,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:25:58,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-09-12 00:25:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:25:58,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:58,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:25:58,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:25:58,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:58,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:58,064 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-09-12 00:25:58,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:58,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616466431] [2020-09-12 00:25:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:25:58,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616466431] [2020-09-12 00:25:58,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756471763] [2020-09-12 00:25:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:25:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:58,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-12 00:25:58,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:25:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:25:58,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-12 00:25:58,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-12 00:25:58,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [936145725] [2020-09-12 00:25:58,180 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:25:58,181 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:25:58,181 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:25:58,182 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:25:58,182 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:25:58,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:25:58,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:25:58,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:25:58,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:25:58,183 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 3 states. [2020-09-12 00:25:58,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:25:58,202 INFO L93 Difference]: Finished difference Result 1149 states and 3359 transitions. [2020-09-12 00:25:58,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:25:58,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:25:58,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:25:58,211 INFO L225 Difference]: With dead ends: 1149 [2020-09-12 00:25:58,212 INFO L226 Difference]: Without dead ends: 1149 [2020-09-12 00:25:58,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:25:58,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-09-12 00:25:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2020-09-12 00:25:58,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-09-12 00:25:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3359 transitions. [2020-09-12 00:25:58,251 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3359 transitions. Word has length 8 [2020-09-12 00:25:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:25:58,251 INFO L479 AbstractCegarLoop]: Abstraction has 1149 states and 3359 transitions. [2020-09-12 00:25:58,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:25:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3359 transitions. [2020-09-12 00:25:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:25:58,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:58,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:25:58,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:25:58,468 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:58,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:58,469 INFO L82 PathProgramCache]: Analyzing trace with hash -624190544, now seen corresponding path program 1 times [2020-09-12 00:25:58,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:58,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787602634] [2020-09-12 00:25:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:25:58,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787602634] [2020-09-12 00:25:58,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327779578] [2020-09-12 00:25:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:25:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:58,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-12 00:25:58,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:25:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:25:58,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:25:58,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-12 00:25:58,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [455442386] [2020-09-12 00:25:58,613 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:25:58,614 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:25:58,615 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:25:58,615 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:25:58,615 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:25:58,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:25:58,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:25:58,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:25:58,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:25:58,617 INFO L87 Difference]: Start difference. First operand 1149 states and 3359 transitions. Second operand 6 states. [2020-09-12 00:25:58,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:25:58,659 INFO L93 Difference]: Finished difference Result 1149 states and 3355 transitions. [2020-09-12 00:25:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:25:58,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-12 00:25:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:25:58,669 INFO L225 Difference]: With dead ends: 1149 [2020-09-12 00:25:58,669 INFO L226 Difference]: Without dead ends: 1149 [2020-09-12 00:25:58,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:25:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-09-12 00:25:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2020-09-12 00:25:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-09-12 00:25:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3355 transitions. [2020-09-12 00:25:58,712 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3355 transitions. Word has length 9 [2020-09-12 00:25:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:25:58,713 INFO L479 AbstractCegarLoop]: Abstraction has 1149 states and 3355 transitions. [2020-09-12 00:25:58,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:25:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3355 transitions. [2020-09-12 00:25:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-12 00:25:58,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:58,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:25:58,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:25:58,929 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:58,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1107793731, now seen corresponding path program 1 times [2020-09-12 00:25:58,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:58,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632643045] [2020-09-12 00:25:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:25:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-12 00:25:59,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632643045] [2020-09-12 00:25:59,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:25:59,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:25:59,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1237851375] [2020-09-12 00:25:59,019 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:25:59,022 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:25:59,024 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-12 00:25:59,024 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:25:59,024 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:25:59,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:25:59,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:25:59,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:25:59,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:25:59,025 INFO L87 Difference]: Start difference. First operand 1149 states and 3355 transitions. Second operand 4 states. [2020-09-12 00:25:59,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:25:59,088 INFO L93 Difference]: Finished difference Result 1005 states and 2767 transitions. [2020-09-12 00:25:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:25:59,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-12 00:25:59,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:25:59,096 INFO L225 Difference]: With dead ends: 1005 [2020-09-12 00:25:59,096 INFO L226 Difference]: Without dead ends: 1005 [2020-09-12 00:25:59,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:25:59,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-09-12 00:25:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 973. [2020-09-12 00:25:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-12 00:25:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2707 transitions. [2020-09-12 00:25:59,128 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2707 transitions. Word has length 13 [2020-09-12 00:25:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:25:59,129 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 2707 transitions. [2020-09-12 00:25:59,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:25:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2707 transitions. [2020-09-12 00:25:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-12 00:25:59,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:25:59,131 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-09-12 00:25:59,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-12 00:25:59,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:25:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:25:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-09-12 00:25:59,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:25:59,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708081407] [2020-09-12 00:25:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:25:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:25:59,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:25:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:25:59,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:25:59,168 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-12 00:25:59,168 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-12 00:25:59,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-12 00:25:59,169 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-12 00:25:59,169 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-12 00:25:59,170 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-12 00:25:59,177 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,177 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,177 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,177 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,178 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,178 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,178 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,178 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,178 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,179 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,179 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,179 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,179 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,179 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,179 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,180 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,180 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,180 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,180 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,180 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,180 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,181 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,181 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,181 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,181 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,181 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,181 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,182 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,182 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,182 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,182 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,183 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,183 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,188 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,189 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,189 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,189 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,189 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,191 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,192 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,194 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,194 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,194 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,194 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:25:59,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-12 00:25:59,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:25:59,200 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:25:59,200 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:25:59,200 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:25:59,201 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:25:59,201 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:25:59,201 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:25:59,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:25:59,202 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-09-12 00:25:59,203 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-12 00:25:59,273 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-12 00:25:59,274 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-12 00:25:59,276 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-12 00:25:59,290 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-12 00:25:59,354 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-12 00:25:59,354 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-12 00:25:59,357 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-12 00:25:59,368 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2020-09-12 00:25:59,368 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:26:00,835 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-12 00:26:00,959 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4448 [2020-09-12 00:26:00,959 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-12 00:26:00,959 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-09-12 00:26:01,304 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-09-12 00:26:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-09-12 00:26:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-12 00:26:01,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:01,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-12 00:26:01,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:01,306 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-09-12 00:26:01,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:01,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508381652] [2020-09-12 00:26:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:01,336 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 00:26:01,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508381652] [2020-09-12 00:26:01,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:26:01,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:26:01,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1750197582] [2020-09-12 00:26:01,337 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:01,338 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:01,338 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-12 00:26:01,338 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:01,339 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:01,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:26:01,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:01,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:26:01,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:26:01,340 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-09-12 00:26:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:01,404 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-09-12 00:26:01,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:26:01,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-12 00:26:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:01,451 INFO L225 Difference]: With dead ends: 5482 [2020-09-12 00:26:01,451 INFO L226 Difference]: Without dead ends: 4856 [2020-09-12 00:26:01,451 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 00:26:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-09-12 00:26:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-09-12 00:26:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-09-12 00:26:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-09-12 00:26:01,699 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-09-12 00:26:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:01,699 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-09-12 00:26:01,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:26:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-09-12 00:26:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:26:01,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:01,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:01,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-12 00:26:01,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:01,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:01,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-09-12 00:26:01,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:01,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768769696] [2020-09-12 00:26:01,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:26:01,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768769696] [2020-09-12 00:26:01,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807872809] [2020-09-12 00:26:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:26:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:01,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-12 00:26:01,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:26:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:26:01,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-12 00:26:01,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-12 00:26:01,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [821924459] [2020-09-12 00:26:01,800 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:01,800 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:01,801 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:26:01,801 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:01,802 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:01,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:26:01,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:01,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:26:01,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:26:01,803 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 3 states. [2020-09-12 00:26:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:01,844 INFO L93 Difference]: Finished difference Result 5481 states and 19553 transitions. [2020-09-12 00:26:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:26:01,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:26:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:01,890 INFO L225 Difference]: With dead ends: 5481 [2020-09-12 00:26:01,890 INFO L226 Difference]: Without dead ends: 5481 [2020-09-12 00:26:01,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:26:01,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2020-09-12 00:26:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2020-09-12 00:26:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2020-09-12 00:26:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19553 transitions. [2020-09-12 00:26:02,076 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19553 transitions. Word has length 8 [2020-09-12 00:26:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:02,076 INFO L479 AbstractCegarLoop]: Abstraction has 5481 states and 19553 transitions. [2020-09-12 00:26:02,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:26:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19553 transitions. [2020-09-12 00:26:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:26:02,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:02,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:02,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-09-12 00:26:02,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:02,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1279390486, now seen corresponding path program 1 times [2020-09-12 00:26:02,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:02,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017899655] [2020-09-12 00:26:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:26:02,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017899655] [2020-09-12 00:26:02,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164359607] [2020-09-12 00:26:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:26:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:02,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-12 00:26:02,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:26:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:26:02,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:26:02,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-12 00:26:02,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1826761226] [2020-09-12 00:26:02,421 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:02,423 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:02,424 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:26:02,424 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:02,424 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:02,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:26:02,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:02,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:26:02,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:26:02,427 INFO L87 Difference]: Start difference. First operand 5481 states and 19553 transitions. Second operand 6 states. [2020-09-12 00:26:02,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:02,499 INFO L93 Difference]: Finished difference Result 5481 states and 19549 transitions. [2020-09-12 00:26:02,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:26:02,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-12 00:26:02,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:02,534 INFO L225 Difference]: With dead ends: 5481 [2020-09-12 00:26:02,535 INFO L226 Difference]: Without dead ends: 5481 [2020-09-12 00:26:02,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:26:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2020-09-12 00:26:02,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2020-09-12 00:26:02,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2020-09-12 00:26:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19549 transitions. [2020-09-12 00:26:02,782 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19549 transitions. Word has length 9 [2020-09-12 00:26:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:02,783 INFO L479 AbstractCegarLoop]: Abstraction has 5481 states and 19549 transitions. [2020-09-12 00:26:02,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:26:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19549 transitions. [2020-09-12 00:26:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-12 00:26:02,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:02,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:02,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:26:02,997 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:02,998 INFO L82 PathProgramCache]: Analyzing trace with hash 41565569, now seen corresponding path program 1 times [2020-09-12 00:26:02,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:02,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125702209] [2020-09-12 00:26:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-12 00:26:03,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125702209] [2020-09-12 00:26:03,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:26:03,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:26:03,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1822450994] [2020-09-12 00:26:03,044 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:03,045 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:03,047 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-12 00:26:03,047 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:03,047 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:03,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:26:03,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:03,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:26:03,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:26:03,048 INFO L87 Difference]: Start difference. First operand 5481 states and 19549 transitions. Second operand 4 states. [2020-09-12 00:26:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:03,103 INFO L93 Difference]: Finished difference Result 4985 states and 16961 transitions. [2020-09-12 00:26:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:26:03,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-12 00:26:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:03,122 INFO L225 Difference]: With dead ends: 4985 [2020-09-12 00:26:03,123 INFO L226 Difference]: Without dead ends: 4985 [2020-09-12 00:26:03,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:26:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2020-09-12 00:26:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4793. [2020-09-12 00:26:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-09-12 00:26:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-09-12 00:26:03,269 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 13 [2020-09-12 00:26:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:03,270 INFO L479 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-09-12 00:26:03,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:26:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-09-12 00:26:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-12 00:26:03,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:03,273 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:03,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-12 00:26:03,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:03,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-09-12 00:26:03,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:03,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436901098] [2020-09-12 00:26:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:26:03,290 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:26:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:26:03,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:26:03,312 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-12 00:26:03,312 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-12 00:26:03,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-12 00:26:03,313 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-12 00:26:03,313 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-12 00:26:03,313 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-12 00:26:03,322 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,323 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,324 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,324 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,324 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,324 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,324 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,325 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,325 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,325 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,325 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,325 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,325 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,326 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,326 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,326 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,326 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,326 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,326 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,327 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,327 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,327 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,327 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,327 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,327 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,328 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,328 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,328 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,328 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,328 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,328 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,329 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,329 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,329 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,329 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,330 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,333 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,333 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,334 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,334 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,334 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,335 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,336 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,336 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,336 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,336 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,337 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,338 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,338 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,338 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,338 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,339 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,340 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,340 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:03,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-12 00:26:03,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:26:03,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:26:03,347 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:26:03,347 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:26:03,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:26:03,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:26:03,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:26:03,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:26:03,349 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-09-12 00:26:03,349 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-12 00:26:03,472 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-12 00:26:03,472 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-12 00:26:03,477 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-12 00:26:03,502 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-12 00:26:03,679 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-12 00:26:03,679 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-12 00:26:03,684 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-12 00:26:03,700 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2020-09-12 00:26:03,700 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:26:04,909 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-12 00:26:05,318 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-12 00:26:05,400 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5971 [2020-09-12 00:26:05,400 INFO L214 etLargeBlockEncoding]: Total number of compositions: 70 [2020-09-12 00:26:05,400 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-09-12 00:26:08,037 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-09-12 00:26:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-09-12 00:26:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-12 00:26:08,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:08,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-12 00:26:08,038 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:08,038 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-09-12 00:26:08,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:08,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764931592] [2020-09-12 00:26:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:08,082 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 00:26:08,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764931592] [2020-09-12 00:26:08,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:26:08,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:26:08,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [949687020] [2020-09-12 00:26:08,083 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:08,084 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:08,084 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-12 00:26:08,084 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:08,084 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:08,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:26:08,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:08,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:26:08,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:26:08,085 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-09-12 00:26:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:08,276 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-09-12 00:26:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:26:08,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-12 00:26:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:08,417 INFO L225 Difference]: With dead ends: 26310 [2020-09-12 00:26:08,418 INFO L226 Difference]: Without dead ends: 23184 [2020-09-12 00:26:08,418 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 00:26:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-09-12 00:26:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-09-12 00:26:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-09-12 00:26:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-09-12 00:26:09,426 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-09-12 00:26:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:09,426 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-09-12 00:26:09,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:26:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-09-12 00:26:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:26:09,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:09,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:09,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-12 00:26:09,428 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:09,428 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-09-12 00:26:09,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:09,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234248721] [2020-09-12 00:26:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:26:09,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234248721] [2020-09-12 00:26:09,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158506475] [2020-09-12 00:26:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:26:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:09,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-12 00:26:09,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:26:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:26:09,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-12 00:26:09,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-12 00:26:09,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [768235728] [2020-09-12 00:26:09,547 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:09,547 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:09,548 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:26:09,548 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:09,549 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:09,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:26:09,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:09,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:26:09,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:26:09,550 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 3 states. [2020-09-12 00:26:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:10,783 INFO L93 Difference]: Finished difference Result 26309 states and 110675 transitions. [2020-09-12 00:26:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:26:10,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:26:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:10,917 INFO L225 Difference]: With dead ends: 26309 [2020-09-12 00:26:10,917 INFO L226 Difference]: Without dead ends: 26309 [2020-09-12 00:26:10,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:26:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2020-09-12 00:26:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2020-09-12 00:26:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2020-09-12 00:26:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110675 transitions. [2020-09-12 00:26:11,980 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110675 transitions. Word has length 8 [2020-09-12 00:26:11,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:11,980 INFO L479 AbstractCegarLoop]: Abstraction has 26309 states and 110675 transitions. [2020-09-12 00:26:11,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:26:11,980 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110675 transitions. [2020-09-12 00:26:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:26:11,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:11,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:12,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-12 00:26:12,182 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:12,183 INFO L82 PathProgramCache]: Analyzing trace with hash -785782832, now seen corresponding path program 1 times [2020-09-12 00:26:12,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:12,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913638171] [2020-09-12 00:26:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:26:12,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913638171] [2020-09-12 00:26:12,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374216564] [2020-09-12 00:26:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:26:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:12,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-12 00:26:12,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:26:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:26:12,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:26:12,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-12 00:26:12,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [167459579] [2020-09-12 00:26:12,336 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:12,336 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:12,337 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:26:12,337 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:12,337 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:12,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:26:12,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:12,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:26:12,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:26:12,339 INFO L87 Difference]: Start difference. First operand 26309 states and 110675 transitions. Second operand 6 states. [2020-09-12 00:26:12,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:12,487 INFO L93 Difference]: Finished difference Result 26309 states and 110671 transitions. [2020-09-12 00:26:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:26:12,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-12 00:26:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:12,571 INFO L225 Difference]: With dead ends: 26309 [2020-09-12 00:26:12,571 INFO L226 Difference]: Without dead ends: 26309 [2020-09-12 00:26:12,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:26:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2020-09-12 00:26:14,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2020-09-12 00:26:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2020-09-12 00:26:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110671 transitions. [2020-09-12 00:26:14,698 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110671 transitions. Word has length 9 [2020-09-12 00:26:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:14,698 INFO L479 AbstractCegarLoop]: Abstraction has 26309 states and 110671 transitions. [2020-09-12 00:26:14,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:26:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110671 transitions. [2020-09-12 00:26:14,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-12 00:26:14,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:14,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:14,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:26:14,906 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:14,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1486090629, now seen corresponding path program 1 times [2020-09-12 00:26:14,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:14,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651141719] [2020-09-12 00:26:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-12 00:26:14,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651141719] [2020-09-12 00:26:14,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:26:14,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:26:14,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1143885470] [2020-09-12 00:26:14,951 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:14,952 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:14,953 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-12 00:26:14,953 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:14,954 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:14,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:26:14,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:14,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:26:14,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:26:14,955 INFO L87 Difference]: Start difference. First operand 26309 states and 110671 transitions. Second operand 4 states. [2020-09-12 00:26:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:15,103 INFO L93 Difference]: Finished difference Result 24533 states and 99507 transitions. [2020-09-12 00:26:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:26:15,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-12 00:26:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:15,163 INFO L225 Difference]: With dead ends: 24533 [2020-09-12 00:26:15,164 INFO L226 Difference]: Without dead ends: 24533 [2020-09-12 00:26:15,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:26:15,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2020-09-12 00:26:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 23573. [2020-09-12 00:26:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2020-09-12 00:26:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2020-09-12 00:26:16,046 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 13 [2020-09-12 00:26:16,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:16,046 INFO L479 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2020-09-12 00:26:16,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:26:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2020-09-12 00:26:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-12 00:26:16,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:16,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:16,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-12 00:26:16,051 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:16,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash 81754288, now seen corresponding path program 1 times [2020-09-12 00:26:16,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:16,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958955749] [2020-09-12 00:26:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-12 00:26:16,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958955749] [2020-09-12 00:26:16,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486416967] [2020-09-12 00:26:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:26:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:16,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-12 00:26:16,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:26:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-12 00:26:16,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:26:16,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-12 00:26:16,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [397759202] [2020-09-12 00:26:16,231 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:16,233 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:16,239 INFO L274 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2020-09-12 00:26:16,239 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:16,349 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:16,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-12 00:26:16,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:16,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-12 00:26:16,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:26:16,351 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2020-09-12 00:26:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:16,553 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2020-09-12 00:26:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:26:16,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-12 00:26:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:16,610 INFO L225 Difference]: With dead ends: 23557 [2020-09-12 00:26:16,610 INFO L226 Difference]: Without dead ends: 23557 [2020-09-12 00:26:16,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:26:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-09-12 00:26:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2020-09-12 00:26:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2020-09-12 00:26:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2020-09-12 00:26:17,578 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2020-09-12 00:26:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:26:17,578 INFO L479 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2020-09-12 00:26:17,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-12 00:26:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2020-09-12 00:26:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-12 00:26:17,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:17,584 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:26:17,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:26:17,785 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-09-12 00:26:17,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:17,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799839204] [2020-09-12 00:26:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:26:17,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:26:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:26:17,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:26:17,843 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-12 00:26:17,843 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-12 00:26:17,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-12 00:26:17,844 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-12 00:26:17,845 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-12 00:26:17,845 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-12 00:26:17,859 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,859 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,859 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,859 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,860 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,860 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,860 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,860 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,860 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,860 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,861 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,861 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,861 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,861 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,861 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,861 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,861 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,862 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,862 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,862 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,862 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,862 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,862 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,863 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,863 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,863 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,863 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,863 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,863 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,864 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,864 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,864 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,864 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,864 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,864 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,864 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,865 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,865 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,865 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,865 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,865 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,865 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,866 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,866 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,866 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,866 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,866 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,868 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,868 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,868 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,868 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,868 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,869 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,870 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,870 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,870 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,870 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,871 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,872 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,872 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,872 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,872 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,874 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,874 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,874 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,874 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,874 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,877 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,877 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,877 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,877 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,878 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:26:17,883 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-12 00:26:17,884 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:26:17,884 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:26:17,884 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:26:17,884 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:26:17,884 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:26:17,884 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:26:17,885 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:26:17,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:26:17,887 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-09-12 00:26:17,887 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-12 00:26:18,131 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-12 00:26:18,132 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-12 00:26:18,142 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-12 00:26:18,185 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-12 00:26:18,483 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-12 00:26:18,483 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-12 00:26:18,494 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-12 00:26:18,534 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2020-09-12 00:26:18,534 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:26:19,379 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-09-12 00:26:20,517 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-12 00:26:20,627 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8653 [2020-09-12 00:26:20,627 INFO L214 etLargeBlockEncoding]: Total number of compositions: 71 [2020-09-12 00:26:20,628 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-09-12 00:26:55,952 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-09-12 00:26:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-09-12 00:26:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-12 00:26:55,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:26:55,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-12 00:26:55,953 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:26:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:26:55,953 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-09-12 00:26:55,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:26:55,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649987503] [2020-09-12 00:26:55,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:26:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:26:55,981 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 00:26:55,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649987503] [2020-09-12 00:26:55,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:26:55,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:26:55,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1552653503] [2020-09-12 00:26:55,982 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:26:55,982 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:26:55,983 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-12 00:26:55,983 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:26:55,983 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:26:55,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:26:55,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:26:55,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:26:55,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:26:55,984 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-09-12 00:26:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:26:57,172 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-09-12 00:26:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:26:57,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-12 00:26:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:26:57,598 INFO L225 Difference]: With dead ends: 127122 [2020-09-12 00:26:57,598 INFO L226 Difference]: Without dead ends: 111496 [2020-09-12 00:26:57,598 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 00:27:04,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-09-12 00:27:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-09-12 00:27:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-09-12 00:27:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-09-12 00:27:07,863 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-09-12 00:27:07,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:27:07,863 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-09-12 00:27:07,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:27:07,863 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-09-12 00:27:07,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:27:07,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:27:07,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:27:07,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-12 00:27:07,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:27:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:27:07,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-09-12 00:27:07,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:27:07,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978220813] [2020-09-12 00:27:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:27:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:27:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:27:07,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978220813] [2020-09-12 00:27:07,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310686591] [2020-09-12 00:27:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:27:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:27:07,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-12 00:27:07,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:27:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:27:07,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-12 00:27:07,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-12 00:27:07,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1284044446] [2020-09-12 00:27:07,971 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:27:07,972 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:27:07,972 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:27:07,972 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:27:07,973 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:27:07,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:27:07,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:27:07,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:27:07,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:27:07,974 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 3 states. [2020-09-12 00:27:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:27:15,354 INFO L93 Difference]: Finished difference Result 127121 states and 615397 transitions. [2020-09-12 00:27:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:27:15,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:27:15,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:27:15,851 INFO L225 Difference]: With dead ends: 127121 [2020-09-12 00:27:15,851 INFO L226 Difference]: Without dead ends: 127121 [2020-09-12 00:27:15,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:27:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2020-09-12 00:27:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2020-09-12 00:27:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2020-09-12 00:27:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615397 transitions. [2020-09-12 00:27:27,560 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615397 transitions. Word has length 8 [2020-09-12 00:27:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:27:27,560 INFO L479 AbstractCegarLoop]: Abstraction has 127121 states and 615397 transitions. [2020-09-12 00:27:27,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:27:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615397 transitions. [2020-09-12 00:27:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:27:27,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:27:27,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:27:27,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:27:27,762 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:27:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:27:27,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1919116790, now seen corresponding path program 1 times [2020-09-12 00:27:27,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:27:27,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312566692] [2020-09-12 00:27:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:27:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:27:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:27:27,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312566692] [2020-09-12 00:27:27,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92414004] [2020-09-12 00:27:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:27:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:27:27,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-12 00:27:27,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:27:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-12 00:27:27,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:27:27,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-12 00:27:27,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [681406456] [2020-09-12 00:27:27,885 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:27:27,886 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:27:27,887 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:27:27,887 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:27:27,887 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:27:27,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:27:27,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:27:27,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:27:27,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:27:27,888 INFO L87 Difference]: Start difference. First operand 127121 states and 615397 transitions. Second operand 6 states. [2020-09-12 00:27:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:27:29,020 INFO L93 Difference]: Finished difference Result 127121 states and 615393 transitions. [2020-09-12 00:27:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:27:29,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-12 00:27:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:27:35,935 INFO L225 Difference]: With dead ends: 127121 [2020-09-12 00:27:35,935 INFO L226 Difference]: Without dead ends: 127121 [2020-09-12 00:27:35,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:27:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2020-09-12 00:27:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2020-09-12 00:27:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2020-09-12 00:27:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615393 transitions. [2020-09-12 00:27:41,708 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615393 transitions. Word has length 9 [2020-09-12 00:27:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:27:41,708 INFO L479 AbstractCegarLoop]: Abstraction has 127121 states and 615393 transitions. [2020-09-12 00:27:41,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:27:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615393 transitions. [2020-09-12 00:27:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-12 00:27:41,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:27:41,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:27:41,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-12 00:27:41,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:27:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:27:41,911 INFO L82 PathProgramCache]: Analyzing trace with hash -2046881392, now seen corresponding path program 1 times [2020-09-12 00:27:41,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:27:41,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940390275] [2020-09-12 00:27:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:27:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:27:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-12 00:27:41,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940390275] [2020-09-12 00:27:41,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:27:41,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:27:41,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1212269402] [2020-09-12 00:27:41,954 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:27:41,955 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:27:41,956 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-12 00:27:41,956 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:27:41,957 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:27:41,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:27:41,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:27:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:27:41,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:27:41,959 INFO L87 Difference]: Start difference. First operand 127121 states and 615393 transitions. Second operand 4 states. [2020-09-12 00:27:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:27:43,996 INFO L93 Difference]: Finished difference Result 120737 states and 568389 transitions. [2020-09-12 00:27:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:27:43,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-12 00:27:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:27:44,468 INFO L225 Difference]: With dead ends: 120737 [2020-09-12 00:27:44,468 INFO L226 Difference]: Without dead ends: 120737 [2020-09-12 00:27:44,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:27:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120737 states. [2020-09-12 00:27:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120737 to 116193. [2020-09-12 00:27:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-09-12 00:27:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-09-12 00:27:58,123 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 13 [2020-09-12 00:27:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:27:58,123 INFO L479 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-09-12 00:27:58,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:27:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-09-12 00:27:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-12 00:27:58,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:27:58,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:27:58,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-12 00:27:58,128 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:27:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:27:58,128 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-09-12 00:27:58,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:27:58,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000554516] [2020-09-12 00:27:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:27:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:27:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-12 00:27:58,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000554516] [2020-09-12 00:27:58,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847622842] [2020-09-12 00:27:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:27:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:27:58,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-12 00:27:58,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:27:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-12 00:27:58,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:27:58,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-12 00:27:58,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [782440441] [2020-09-12 00:27:58,293 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:27:58,296 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:27:58,300 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 44 transitions. [2020-09-12 00:27:58,301 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:27:58,351 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:27:58,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-12 00:27:58,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:27:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-12 00:27:58,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:27:58,353 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-09-12 00:27:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:27:59,191 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-09-12 00:27:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:27:59,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-12 00:27:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:28:05,701 INFO L225 Difference]: With dead ends: 116177 [2020-09-12 00:28:05,701 INFO L226 Difference]: Without dead ends: 116177 [2020-09-12 00:28:05,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:28:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-09-12 00:28:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-09-12 00:28:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-09-12 00:28:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-09-12 00:28:11,453 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-09-12 00:28:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:28:11,454 INFO L479 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-09-12 00:28:11,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-12 00:28:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-09-12 00:28:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-12 00:28:11,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:28:11,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:28:11,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-12 00:28:11,677 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:28:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:28:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-09-12 00:28:11,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:28:11,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260802538] [2020-09-12 00:28:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:28:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:28:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-12 00:28:11,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260802538] [2020-09-12 00:28:11,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579377701] [2020-09-12 00:28:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:28:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:28:11,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-12 00:28:11,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:28:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-12 00:28:11,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:28:11,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-09-12 00:28:11,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [298086570] [2020-09-12 00:28:11,882 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:28:11,885 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:28:11,890 INFO L274 McrAutomatonBuilder]: Finished intersection with 41 states and 56 transitions. [2020-09-12 00:28:11,891 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:28:11,982 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:28:11,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-12 00:28:11,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:28:11,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-12 00:28:11,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-09-12 00:28:11,983 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-09-12 00:28:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:28:13,846 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-09-12 00:28:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:28:13,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-09-12 00:28:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:28:14,272 INFO L225 Difference]: With dead ends: 116113 [2020-09-12 00:28:14,272 INFO L226 Difference]: Without dead ends: 116113 [2020-09-12 00:28:14,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-09-12 00:28:22,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-09-12 00:28:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-09-12 00:28:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-09-12 00:28:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-09-12 00:28:26,470 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-09-12 00:28:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:28:26,470 INFO L479 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-09-12 00:28:26,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-12 00:28:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-09-12 00:28:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-12 00:28:26,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:28:26,490 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:28:26,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-12 00:28:26,704 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:28:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:28:26,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-09-12 00:28:26,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:28:26,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117315092] [2020-09-12 00:28:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:28:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:28:26,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:28:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-12 00:28:26,738 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-12 00:28:26,748 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-12 00:28:26,749 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-12 00:28:26,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-12 00:28:26,749 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-12 00:28:26,750 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-12 00:28:26,750 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-09-12 00:28:26,759 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,760 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,760 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,760 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,760 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,760 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,760 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,761 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,761 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,761 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,761 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,761 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,762 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,762 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,762 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,762 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,762 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,762 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,762 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,763 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,763 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,763 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,763 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,763 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,763 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,764 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,764 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,764 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,764 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,764 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,764 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,764 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,765 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,765 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,765 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,765 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,765 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,766 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,766 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,766 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,766 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,766 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,766 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,767 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,767 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,767 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,767 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,767 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,767 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,768 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,768 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,768 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,768 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,768 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,769 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,770 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,770 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,770 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,770 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,771 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,772 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,772 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,772 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,772 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,775 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,775 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,776 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,776 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,776 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,777 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,777 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,778 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,778 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,778 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,779 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,779 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,780 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,780 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,780 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,782 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,782 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,782 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,782 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,782 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:28:26,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-12 00:28:26,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:28:26,795 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:28:26,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:28:26,796 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:28:26,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:28:26,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:28:26,796 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:28:26,796 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:28:26,797 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-09-12 00:28:26,798 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-12 00:28:27,330 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-12 00:28:27,330 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-12 00:28:27,365 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-12 00:28:27,486 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-12 00:28:28,086 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-12 00:28:28,086 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-12 00:28:28,116 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-12 00:28:28,219 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2020-09-12 00:28:28,219 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:28:29,944 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-12 00:28:30,052 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11131 [2020-09-12 00:28:30,053 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2020-09-12 00:28:30,053 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-09-12 00:29:24,119 WARN L544 AbstractCegarLoop]: Verification canceled [2020-09-12 00:29:24,130 WARN L228 ceAbstractionStarter]: Timeout [2020-09-12 00:29:24,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:29:24 BasicIcfg [2020-09-12 00:29:24,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:29:24,137 INFO L168 Benchmark]: Toolchain (without parser) took 215355.44 ms. Allocated memory was 140.0 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 102.3 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2020-09-12 00:29:24,137 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-12 00:29:24,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 859.37 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 161.6 MB in the end (delta: -59.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:29:24,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.47 ms. Allocated memory is still 202.4 MB. Free memory was 161.6 MB in the beginning and 159.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:29:24,138 INFO L168 Benchmark]: Boogie Preprocessor took 42.05 ms. Allocated memory is still 202.4 MB. Free memory was 159.6 MB in the beginning and 158.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:29:24,139 INFO L168 Benchmark]: RCFGBuilder took 501.50 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 135.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-12 00:29:24,139 INFO L168 Benchmark]: TraceAbstraction took 213882.20 ms. Allocated memory was 202.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 134.9 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2020-09-12 00:29:24,142 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 859.37 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 161.6 MB in the end (delta: -59.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.47 ms. Allocated memory is still 202.4 MB. Free memory was 161.6 MB in the beginning and 159.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.05 ms. Allocated memory is still 202.4 MB. Free memory was 159.6 MB in the beginning and 158.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.50 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 135.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213882.20 ms. Allocated memory was 202.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 134.9 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 67 ProgramPointsBefore, 15 ProgramPointsAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 7 FixpointIterations, 24 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 181 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 264 CheckedPairsTotal, 66 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 75 ProgramPointsBefore, 25 ProgramPointsAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 7 FixpointIterations, 23 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 456 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1723 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 83 ProgramPointsBefore, 31 ProgramPointsAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 749 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3028 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 91 ProgramPointsBefore, 37 ProgramPointsAfterwards, 92 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 909 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4448 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 99 ProgramPointsBefore, 43 ProgramPointsAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 1450 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 5971 CheckedPairsTotal, 70 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.7s, 107 ProgramPointsBefore, 49 ProgramPointsAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 1534 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 8653 CheckedPairsTotal, 71 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.2s, 115 ProgramPointsBefore, 55 ProgramPointsAfterwards, 113 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 2156 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11131 CheckedPairsTotal, 75 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 134569 states. Currently 26292 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 213.5s, OverallIterations: 29, TraceHistogramMax: 7, AutomataDifference: 32.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 107.9s, HoareTripleCheckerStatistics: 795 SDtfs, 562 SDslu, 985 SDs, 0 SdLazy, 348 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 210 SyntacticMatches, 18 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred 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: 66.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 5728 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 475 NumberOfCodeBlocks, 475 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 17026 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1006 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 36 InterpolantComputations, 15 PerfectInterpolantSequences, 55/124 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 could not prove your program: Timeout Completed graceful shutdown