/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-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:35:13,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:35:13,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:35:13,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:35:13,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:35:13,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:35:13,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:35:13,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:35:13,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:35:13,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:35:13,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:35:13,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:35:13,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:35:13,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:35:13,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:35:13,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:35:13,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:35:13,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:35:13,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:35:13,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:35:13,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:35:13,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:35:13,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:35:13,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:35:13,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:35:13,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:35:13,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:35:13,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:35:13,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:35:13,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:35:13,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:35:13,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:35:13,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:35:13,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:35:13,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:35:13,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:35:13,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:35:13,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:35:13,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:35:13,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:35:13,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:35:13,538 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 [2020-10-16 12:35:13,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:35:13,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:35:13,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:35:13,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:35:13,587 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:35:13,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:35:13,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:35:13,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:35:13,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:35:13,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:35:13,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:35:13,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:35:13,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:35:13,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:35:13,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:35:13,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:35:13,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:35:13,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:35:13,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:35:13,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:35:13,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:35:13,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:35:13,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:35:13,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:35:13,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:35:13,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:35:13,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:35:13,593 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:35:13,593 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:35:13,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:35:13,593 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:35:13,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:35:13,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:35:13,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:35:13,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:35:13,900 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:35:13,901 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-16 12:35:13,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a6f7e3aa/57da4a55c0e647f69c78344c3f92affd/FLAGe5bba28f9 [2020-10-16 12:35:14,509 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:35:14,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-16 12:35:14,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a6f7e3aa/57da4a55c0e647f69c78344c3f92affd/FLAGe5bba28f9 [2020-10-16 12:35:14,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a6f7e3aa/57da4a55c0e647f69c78344c3f92affd [2020-10-16 12:35:14,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:35:14,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:35:14,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:35:14,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:35:14,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:35:14,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:35:14" (1/1) ... [2020-10-16 12:35:14,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6555bed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:14, skipping insertion in model container [2020-10-16 12:35:14,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:35:14" (1/1) ... [2020-10-16 12:35:14,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:35:14,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:35:15,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:35:15,414 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:35:15,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:35:15,596 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:35:15,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15 WrapperNode [2020-10-16 12:35:15,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:35:15,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:35:15,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:35:15,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:35:15,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:35:15,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:35:15,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:35:15,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:35:15,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:35:15,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:35:15,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:35:15,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:35:15,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (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 [2020-10-16 12:35:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:35:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:35:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:35:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:35:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:35:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:35:15,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:35:15,834 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:35:16,205 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:35:16,205 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:35:16,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:35:16 BoogieIcfgContainer [2020-10-16 12:35:16,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:35:16,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:35:16,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:35:16,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:35:16,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:35:14" (1/3) ... [2020-10-16 12:35:16,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dce7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:35:16, skipping insertion in model container [2020-10-16 12:35:16,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (2/3) ... [2020-10-16 12:35:16,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dce7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:35:16, skipping insertion in model container [2020-10-16 12:35:16,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:35:16" (3/3) ... [2020-10-16 12:35:16,216 INFO L111 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-10-16 12:35:16,228 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:35:16,229 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:35:16,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:35:16,238 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:35:16,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,272 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:35:16,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:35:16,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:35:16,310 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:35:16,310 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:35:16,310 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:35:16,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:35:16,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:35:16,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:35:16,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:35:16,324 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:35:16,325 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions, 107 flow [2020-10-16 12:35:16,328 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 51 transitions, 107 flow [2020-10-16 12:35:16,330 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-10-16 12:35:16,365 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-10-16 12:35:16,366 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:35:16,371 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2020-10-16 12:35:16,373 INFO L117 LiptonReduction]: Number of co-enabled transitions 672 [2020-10-16 12:35:17,036 INFO L132 LiptonReduction]: Checked pairs total: 1328 [2020-10-16 12:35:17,037 INFO L134 LiptonReduction]: Total number of compositions: 36 [2020-10-16 12:35:17,043 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 23 transitions, 51 flow [2020-10-16 12:35:17,056 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-16 12:35:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-16 12:35:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:35:17,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,067 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1942834628, now seen corresponding path program 1 times [2020-10-16 12:35:17,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867234664] [2020-10-16 12:35:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:17,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867234664] [2020-10-16 12:35:17,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:17,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1891192689] [2020-10-16 12:35:17,249 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,252 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,264 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-16 12:35:17,265 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,269 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:35:17,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:35:17,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:35:17,287 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-10-16 12:35:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,296 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2020-10-16 12:35:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:35:17,298 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-16 12:35:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,309 INFO L225 Difference]: With dead ends: 74 [2020-10-16 12:35:17,309 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 12:35:17,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:35:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 12:35:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 12:35:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 12:35:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 134 transitions. [2020-10-16 12:35:17,357 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 134 transitions. Word has length 6 [2020-10-16 12:35:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,357 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 134 transitions. [2020-10-16 12:35:17,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:35:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 134 transitions. [2020-10-16 12:35:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 12:35:17,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:35:17,359 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,360 INFO L82 PathProgramCache]: Analyzing trace with hash 98318518, now seen corresponding path program 1 times [2020-10-16 12:35:17,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543096348] [2020-10-16 12:35:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:17,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543096348] [2020-10-16 12:35:17,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:17,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [831030012] [2020-10-16 12:35:17,437 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,438 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,439 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-16 12:35:17,439 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,440 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:17,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:17,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:17,442 INFO L87 Difference]: Start difference. First operand 68 states and 134 transitions. Second operand 3 states. [2020-10-16 12:35:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,484 INFO L93 Difference]: Finished difference Result 73 states and 134 transitions. [2020-10-16 12:35:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:17,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 12:35:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,486 INFO L225 Difference]: With dead ends: 73 [2020-10-16 12:35:17,486 INFO L226 Difference]: Without dead ends: 58 [2020-10-16 12:35:17,487 INFO L677 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 [2020-10-16 12:35:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-16 12:35:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-16 12:35:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 12:35:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2020-10-16 12:35:17,497 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2020-10-16 12:35:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,497 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2020-10-16 12:35:17,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2020-10-16 12:35:17,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 12:35:17,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:35:17,499 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,499 INFO L82 PathProgramCache]: Analyzing trace with hash 114699826, now seen corresponding path program 1 times [2020-10-16 12:35:17,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294978863] [2020-10-16 12:35:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:17,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294978863] [2020-10-16 12:35:17,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:17,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [607236376] [2020-10-16 12:35:17,542 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,542 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,544 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-16 12:35:17,544 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,544 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:17,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:17,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:17,545 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 3 states. [2020-10-16 12:35:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,563 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2020-10-16 12:35:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:17,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 12:35:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,565 INFO L225 Difference]: With dead ends: 48 [2020-10-16 12:35:17,565 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 12:35:17,566 INFO L677 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 [2020-10-16 12:35:17,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 12:35:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 12:35:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 12:35:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 66 transitions. [2020-10-16 12:35:17,571 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 66 transitions. Word has length 7 [2020-10-16 12:35:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,571 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 66 transitions. [2020-10-16 12:35:17,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2020-10-16 12:35:17,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:35:17,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:35:17,573 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,574 INFO L82 PathProgramCache]: Analyzing trace with hash -480213144, now seen corresponding path program 1 times [2020-10-16 12:35:17,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926090840] [2020-10-16 12:35:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:17,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926090840] [2020-10-16 12:35:17,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:35:17,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1531965527] [2020-10-16 12:35:17,626 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,627 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,629 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:35:17,630 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,667 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [727#(= ~turn~0 1)] [2020-10-16 12:35:17,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:35:17,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:35:17,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:35:17,668 INFO L87 Difference]: Start difference. First operand 38 states and 66 transitions. Second operand 5 states. [2020-10-16 12:35:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,698 INFO L93 Difference]: Finished difference Result 42 states and 72 transitions. [2020-10-16 12:35:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:35:17,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 12:35:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,699 INFO L225 Difference]: With dead ends: 42 [2020-10-16 12:35:17,699 INFO L226 Difference]: Without dead ends: 33 [2020-10-16 12:35:17,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:35:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-16 12:35:17,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-16 12:35:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-16 12:35:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2020-10-16 12:35:17,704 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 11 [2020-10-16 12:35:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,705 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-10-16 12:35:17,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:35:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-10-16 12:35:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:35:17,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:35:17,706 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1657399704, now seen corresponding path program 2 times [2020-10-16 12:35:17,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11595848] [2020-10-16 12:35:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:17,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11595848] [2020-10-16 12:35:17,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:35:17,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1875638651] [2020-10-16 12:35:17,752 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,752 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,754 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 27 transitions. [2020-10-16 12:35:17,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,762 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:35:17,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:35:17,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:17,763 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2020-10-16 12:35:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,776 INFO L93 Difference]: Finished difference Result 16 states and 26 transitions. [2020-10-16 12:35:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:35:17,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 12:35:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,777 INFO L225 Difference]: With dead ends: 16 [2020-10-16 12:35:17,777 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:35:17,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:35:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:35:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:35:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:35:17,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-16 12:35:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,779 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:35:17,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:35:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:35:17,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:35:17,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:35:17,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:35:17 BasicIcfg [2020-10-16 12:35:17,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:35:17,787 INFO L168 Benchmark]: Toolchain (without parser) took 2977.86 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 100.7 MB in the beginning and 115.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:17,788 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 12:35:17,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.74 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 165.0 MB in the end (delta: -64.3 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:17,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.63 ms. Allocated memory is still 203.9 MB. Free memory was 165.0 MB in the beginning and 163.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:17,792 INFO L168 Benchmark]: Boogie Preprocessor took 65.04 ms. Allocated memory is still 203.9 MB. Free memory was 163.1 MB in the beginning and 161.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:17,792 INFO L168 Benchmark]: RCFGBuilder took 456.97 ms. Allocated memory is still 203.9 MB. Free memory was 161.1 MB in the beginning and 142.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:17,793 INFO L168 Benchmark]: TraceAbstraction took 1576.19 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 142.5 MB in the beginning and 115.0 MB in the end (delta: 27.5 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:17,798 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.74 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 165.0 MB in the end (delta: -64.3 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 85.63 ms. Allocated memory is still 203.9 MB. Free memory was 165.0 MB in the beginning and 163.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.04 ms. Allocated memory is still 203.9 MB. Free memory was 163.1 MB in the beginning and 161.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.97 ms. Allocated memory is still 203.9 MB. Free memory was 161.1 MB in the beginning and 142.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1576.19 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 142.5 MB in the beginning and 115.0 MB in the end (delta: 27.5 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 346 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 49 PlacesBefore, 22 PlacesAfterwards, 51 TransitionsBefore, 23 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 1328 MoverChecksTotal - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 94 SDtfs, 46 SDslu, 45 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...