/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 11:31:56,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 11:31:56,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 11:31:56,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 11:31:56,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 11:31:56,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 11:31:56,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 11:31:56,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 11:31:56,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 11:31:56,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 11:31:56,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 11:31:56,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 11:31:56,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 11:31:56,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 11:31:56,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 11:31:56,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 11:31:56,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 11:31:56,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 11:31:56,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 11:31:56,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 11:31:56,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 11:31:56,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 11:31:56,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 11:31:56,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 11:31:56,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 11:31:56,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 11:31:56,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 11:31:56,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 11:31:56,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 11:31:56,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 11:31:56,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 11:31:56,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 11:31:56,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 11:31:56,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 11:31:56,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 11:31:56,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 11:31:56,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 11:31:56,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 11:31:56,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 11:31:56,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 11:31:56,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 11:31:56,459 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 11:31:56,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 11:31:56,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 11:31:56,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 11:31:56,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 11:31:56,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 11:31:56,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 11:31:56,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 11:31:56,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 11:31:56,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 11:31:56,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 11:31:56,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 11:31:56,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 11:31:56,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 11:31:56,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 11:31:56,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 11:31:56,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 11:31:56,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 11:31:56,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 11:31:56,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 11:31:56,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 11:31:56,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 11:31:56,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 11:31:56,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 11:31:56,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 11:31:56,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 11:31:56,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 11:31:56,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 11:31:56,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 11:31:56,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 11:31:56,816 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 11:31:56,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-10-09 11:31:56,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253026d14/3c7bc7f735a54986b89ec7131f4e09ac/FLAGcff13b274 [2020-10-09 11:31:57,473 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 11:31:57,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-10-09 11:31:57,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253026d14/3c7bc7f735a54986b89ec7131f4e09ac/FLAGcff13b274 [2020-10-09 11:31:57,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253026d14/3c7bc7f735a54986b89ec7131f4e09ac [2020-10-09 11:31:57,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 11:31:57,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 11:31:57,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 11:31:57,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 11:31:57,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 11:31:57,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 11:31:57" (1/1) ... [2020-10-09 11:31:57,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d98dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:57, skipping insertion in model container [2020-10-09 11:31:57,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 11:31:57" (1/1) ... [2020-10-09 11:31:57,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 11:31:57,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 11:31:58,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 11:31:58,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 11:31:58,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 11:31:58,546 INFO L208 MainTranslator]: Completed translation [2020-10-09 11:31:58,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58 WrapperNode [2020-10-09 11:31:58,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 11:31:58,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 11:31:58,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 11:31:58,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 11:31:58,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 11:31:58,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 11:31:58,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 11:31:58,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 11:31:58,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... [2020-10-09 11:31:58,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 11:31:58,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 11:31:58,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 11:31:58,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 11:31:58,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 11:31:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-09 11:31:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-09 11:31:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 11:31:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 11:31:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 11:31:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 11:31:58,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 11:31:58,748 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 11:31:59,096 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 11:31:59,097 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-09 11:31:59,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 11:31:59 BoogieIcfgContainer [2020-10-09 11:31:59,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 11:31:59,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 11:31:59,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 11:31:59,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 11:31:59,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 11:31:57" (1/3) ... [2020-10-09 11:31:59,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d240e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 11:31:59, skipping insertion in model container [2020-10-09 11:31:59,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:31:58" (2/3) ... [2020-10-09 11:31:59,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d240e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 11:31:59, skipping insertion in model container [2020-10-09 11:31:59,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 11:31:59" (3/3) ... [2020-10-09 11:31:59,109 INFO L111 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-10-09 11:31:59,121 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 11:31:59,122 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 11:31:59,130 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-09 11:31:59,131 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 11:31:59,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:31:59,199 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 11:31:59,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 11:31:59,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 11:31:59,218 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 11:31:59,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 11:31:59,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 11:31:59,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 11:31:59,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 11:31:59,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 11:31:59,231 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 11:31:59,233 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 65 transitions, 135 flow [2020-10-09 11:31:59,235 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 65 transitions, 135 flow [2020-10-09 11:31:59,237 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions, 135 flow [2020-10-09 11:31:59,276 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2020-10-09 11:31:59,277 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 11:31:59,283 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-10-09 11:31:59,286 INFO L117 LiptonReduction]: Number of co-enabled transitions 1302 [2020-10-09 11:32:00,213 INFO L132 LiptonReduction]: Checked pairs total: 2818 [2020-10-09 11:32:00,214 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-09 11:32:00,221 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 33 transitions, 71 flow [2020-10-09 11:32:00,239 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 123 states. [2020-10-09 11:32:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-10-09 11:32:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-09 11:32:00,249 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:32:00,250 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-09 11:32:00,250 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:32:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:32:00,257 INFO L82 PathProgramCache]: Analyzing trace with hash 265919371, now seen corresponding path program 1 times [2020-10-09 11:32:00,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:32:00,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952473435] [2020-10-09 11:32:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:32:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:32:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:32:00,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952473435] [2020-10-09 11:32:00,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:32:00,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 11:32:00,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17148590] [2020-10-09 11:32:00,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 11:32:00,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:32:00,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 11:32:00,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 11:32:00,468 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 2 states. [2020-10-09 11:32:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:32:00,492 INFO L93 Difference]: Finished difference Result 123 states and 288 transitions. [2020-10-09 11:32:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 11:32:00,494 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-10-09 11:32:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:32:00,509 INFO L225 Difference]: With dead ends: 123 [2020-10-09 11:32:00,509 INFO L226 Difference]: Without dead ends: 114 [2020-10-09 11:32:00,510 INFO L673 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 [2020-10-09 11:32:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-09 11:32:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-10-09 11:32:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-09 11:32:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 270 transitions. [2020-10-09 11:32:00,567 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 270 transitions. Word has length 5 [2020-10-09 11:32:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:32:00,568 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 270 transitions. [2020-10-09 11:32:00,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 11:32:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 270 transitions. [2020-10-09 11:32:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-09 11:32:00,570 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:32:00,570 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-09 11:32:00,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 11:32:00,571 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:32:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:32:00,571 INFO L82 PathProgramCache]: Analyzing trace with hash -346472462, now seen corresponding path program 1 times [2020-10-09 11:32:00,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:32:00,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369176378] [2020-10-09 11:32:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:32:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:32:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:32:00,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369176378] [2020-10-09 11:32:00,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:32:00,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 11:32:00,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779969121] [2020-10-09 11:32:00,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 11:32:00,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:32:00,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 11:32:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:32:00,634 INFO L87 Difference]: Start difference. First operand 114 states and 270 transitions. Second operand 3 states. [2020-10-09 11:32:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:32:00,670 INFO L93 Difference]: Finished difference Result 119 states and 267 transitions. [2020-10-09 11:32:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 11:32:00,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-09 11:32:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:32:00,672 INFO L225 Difference]: With dead ends: 119 [2020-10-09 11:32:00,672 INFO L226 Difference]: Without dead ends: 98 [2020-10-09 11:32:00,673 INFO L673 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 [2020-10-09 11:32:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-09 11:32:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-10-09 11:32:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-09 11:32:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 213 transitions. [2020-10-09 11:32:00,688 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 213 transitions. Word has length 6 [2020-10-09 11:32:00,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:32:00,688 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 213 transitions. [2020-10-09 11:32:00,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 11:32:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 213 transitions. [2020-10-09 11:32:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-09 11:32:00,689 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:32:00,689 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-09 11:32:00,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 11:32:00,690 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:32:00,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:32:00,690 INFO L82 PathProgramCache]: Analyzing trace with hash -347203723, now seen corresponding path program 1 times [2020-10-09 11:32:00,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:32:00,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170873942] [2020-10-09 11:32:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:32:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:32:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:32:00,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170873942] [2020-10-09 11:32:00,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:32:00,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 11:32:00,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932647290] [2020-10-09 11:32:00,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 11:32:00,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:32:00,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 11:32:00,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:32:00,735 INFO L87 Difference]: Start difference. First operand 92 states and 213 transitions. Second operand 3 states. [2020-10-09 11:32:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:32:00,754 INFO L93 Difference]: Finished difference Result 87 states and 195 transitions. [2020-10-09 11:32:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 11:32:00,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-09 11:32:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:32:00,756 INFO L225 Difference]: With dead ends: 87 [2020-10-09 11:32:00,756 INFO L226 Difference]: Without dead ends: 66 [2020-10-09 11:32:00,757 INFO L673 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 [2020-10-09 11:32:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-09 11:32:00,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-09 11:32:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-09 11:32:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 148 transitions. [2020-10-09 11:32:00,764 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 148 transitions. Word has length 6 [2020-10-09 11:32:00,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:32:00,764 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 148 transitions. [2020-10-09 11:32:00,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 11:32:00,765 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 148 transitions. [2020-10-09 11:32:00,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 11:32:00,766 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:32:00,766 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 11:32:00,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 11:32:00,767 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:32:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:32:00,767 INFO L82 PathProgramCache]: Analyzing trace with hash 390027313, now seen corresponding path program 1 times [2020-10-09 11:32:00,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:32:00,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743906692] [2020-10-09 11:32:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:32:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:32:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:32:00,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743906692] [2020-10-09 11:32:00,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:32:00,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 11:32:00,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870254268] [2020-10-09 11:32:00,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 11:32:00,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:32:00,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 11:32:00,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:32:00,803 INFO L87 Difference]: Start difference. First operand 66 states and 148 transitions. Second operand 3 states. [2020-10-09 11:32:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:32:00,824 INFO L93 Difference]: Finished difference Result 66 states and 143 transitions. [2020-10-09 11:32:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 11:32:00,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-09 11:32:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:32:00,826 INFO L225 Difference]: With dead ends: 66 [2020-10-09 11:32:00,826 INFO L226 Difference]: Without dead ends: 56 [2020-10-09 11:32:00,827 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:32:00,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-09 11:32:00,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-09 11:32:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-09 11:32:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 119 transitions. [2020-10-09 11:32:00,832 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 119 transitions. Word has length 9 [2020-10-09 11:32:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:32:00,832 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 119 transitions. [2020-10-09 11:32:00,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 11:32:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2020-10-09 11:32:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 11:32:00,834 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:32:00,834 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 11:32:00,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 11:32:00,834 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:32:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:32:00,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1213925997, now seen corresponding path program 2 times [2020-10-09 11:32:00,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:32:00,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120950086] [2020-10-09 11:32:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:32:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:32:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:32:00,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120950086] [2020-10-09 11:32:00,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:32:00,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 11:32:00,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830386193] [2020-10-09 11:32:00,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 11:32:00,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:32:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 11:32:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:32:00,868 INFO L87 Difference]: Start difference. First operand 56 states and 119 transitions. Second operand 3 states. [2020-10-09 11:32:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:32:00,881 INFO L93 Difference]: Finished difference Result 37 states and 93 transitions. [2020-10-09 11:32:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 11:32:00,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-09 11:32:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:32:00,882 INFO L225 Difference]: With dead ends: 37 [2020-10-09 11:32:00,882 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 11:32:00,883 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:32:00,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 11:32:00,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 11:32:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 11:32:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 11:32:00,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-09 11:32:00,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:32:00,884 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 11:32:00,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 11:32:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 11:32:00,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 11:32:00,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 11:32:00,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 11:32:00 BasicIcfg [2020-10-09 11:32:00,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 11:32:00,892 INFO L168 Benchmark]: Toolchain (without parser) took 3172.12 ms. Allocated memory was 252.2 MB in the beginning and 358.1 MB in the end (delta: 105.9 MB). Free memory was 207.1 MB in the beginning and 241.4 MB in the end (delta: -34.3 MB). Peak memory consumption was 71.6 MB. Max. memory is 14.2 GB. [2020-10-09 11:32:00,892 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 11:32:00,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 828.40 ms. Allocated memory was 252.2 MB in the beginning and 315.1 MB in the end (delta: 62.9 MB). Free memory was 207.1 MB in the beginning and 273.7 MB in the end (delta: -66.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. [2020-10-09 11:32:00,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.78 ms. Allocated memory is still 315.1 MB. Free memory was 273.7 MB in the beginning and 271.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 11:32:00,895 INFO L168 Benchmark]: Boogie Preprocessor took 45.95 ms. Allocated memory is still 315.1 MB. Free memory was 271.2 MB in the beginning and 268.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 11:32:00,896 INFO L168 Benchmark]: RCFGBuilder took 424.08 ms. Allocated memory is still 315.1 MB. Free memory was 268.6 MB in the beginning and 249.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-09 11:32:00,897 INFO L168 Benchmark]: TraceAbstraction took 1788.70 ms. Allocated memory was 315.1 MB in the beginning and 358.1 MB in the end (delta: 43.0 MB). Free memory was 249.3 MB in the beginning and 241.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 14.2 GB. [2020-10-09 11:32:00,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 828.40 ms. Allocated memory was 252.2 MB in the beginning and 315.1 MB in the end (delta: 62.9 MB). Free memory was 207.1 MB in the beginning and 273.7 MB in the end (delta: -66.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 75.78 ms. Allocated memory is still 315.1 MB. Free memory was 273.7 MB in the beginning and 271.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 45.95 ms. Allocated memory is still 315.1 MB. Free memory was 271.2 MB in the beginning and 268.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 424.08 ms. Allocated memory is still 315.1 MB. Free memory was 268.6 MB in the beginning and 249.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1788.70 ms. Allocated memory was 315.1 MB in the beginning and 358.1 MB in the end (delta: 43.0 MB). Free memory was 249.3 MB in the beginning and 241.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 848 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 34 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 132 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 57 PlacesBefore, 27 PlacesAfterwards, 65 TransitionsBefore, 33 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 43 TotalNumberOfCompositions, 2818 MoverChecksTotal - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: 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, 54 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 151 SDtfs, 64 SDslu, 48 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 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...