/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-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:56:52,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:56:52,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:56:52,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:56:52,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:56:52,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:56:52,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:56:52,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:56:52,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:56:52,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:56:52,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:56:52,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:56:52,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:56:52,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:56:52,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:56:52,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:56:52,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:56:52,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:56:52,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:56:52,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:56:52,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:56:52,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:56:52,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:56:52,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:56:52,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 15:56:52,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:56:52,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:56:52,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:56:52,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:56:52,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:56:52,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:56:52,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:56:52,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:56:52,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:56:52,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:56:52,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:56:52,445 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 [2020-10-11 15:56:52,488 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:56:52,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:56:52,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:56:52,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:56:52,491 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:56:52,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:56:52,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:56:52,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:56:52,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:56:52,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:56:52,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:56:52,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:56:52,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:56:52,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:56:52,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:56:52,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:56:52,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:56:52,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:56:52,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:56:52,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:56:52,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:56:52,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:56:52,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:56:52,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:56:52,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:56:52,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:56:52,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:56:52,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:56:52,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:56:52,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:56:52,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:56:52,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:56:52,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:56:52,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:56:52,864 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:56:52,865 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-10-11 15:56:52,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74e969b8/3bb967823613482d97dd4a853aff1c4d/FLAG00dce3ba1 [2020-10-11 15:56:53,450 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:56:53,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-10-11 15:56:53,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74e969b8/3bb967823613482d97dd4a853aff1c4d/FLAG00dce3ba1 [2020-10-11 15:56:53,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74e969b8/3bb967823613482d97dd4a853aff1c4d [2020-10-11 15:56:53,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:56:53,760 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:56:53,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:56:53,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:56:53,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:56:53,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:56:53" (1/1) ... [2020-10-11 15:56:53,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9bb26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:53, skipping insertion in model container [2020-10-11 15:56:53,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:56:53" (1/1) ... [2020-10-11 15:56:53,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:56:53,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:56:54,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:56:54,356 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:56:54,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:56:54,498 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:56:54,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54 WrapperNode [2020-10-11 15:56:54,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:56:54,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:56:54,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:56:54,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:56:54,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:56:54,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:56:54,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:56:54,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:56:54,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (1/1) ... [2020-10-11 15:56:54,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:56:54,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:56:54,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:56:54,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:56:54,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (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 [2020-10-11 15:56:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-11 15:56:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 15:56:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:56:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-10-11 15:56:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-10-11 15:56:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:56:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:56:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:56:54,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:56:54,696 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:56:55,070 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:56:55,071 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-11 15:56:55,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:56:55 BoogieIcfgContainer [2020-10-11 15:56:55,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:56:55,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:56:55,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:56:55,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:56:55,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:56:53" (1/3) ... [2020-10-11 15:56:55,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31078c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:56:55, skipping insertion in model container [2020-10-11 15:56:55,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:56:54" (2/3) ... [2020-10-11 15:56:55,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31078c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:56:55, skipping insertion in model container [2020-10-11 15:56:55,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:56:55" (3/3) ... [2020-10-11 15:56:55,082 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-10-11 15:56:55,094 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:56:55,094 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:56:55,102 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:56:55,103 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:56:55,125 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,126 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,126 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,126 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,126 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,126 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,127 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,130 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,131 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,131 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,131 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,131 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:55,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:56:55,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:56:55,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:56:55,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:56:55,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:56:55,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:56:55,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:56:55,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:56:55,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:56:55,192 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:56:55,195 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-11 15:56:55,198 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-11 15:56:55,200 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-11 15:56:55,251 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-11 15:56:55,252 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 15:56:55,259 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-10-11 15:56:55,262 INFO L117 LiptonReduction]: Number of co-enabled transitions 370 [2020-10-11 15:56:56,618 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-11 15:56:56,868 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-11 15:56:57,055 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-11 15:56:57,135 INFO L132 LiptonReduction]: Checked pairs total: 397 [2020-10-11 15:56:57,135 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-11 15:56:57,148 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-10-11 15:56:57,158 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-10-11 15:56:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-11 15:56:57,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 15:56:57,167 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:56:57,168 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 15:56:57,169 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:56:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:56:57,175 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-10-11 15:56:57,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:56:57,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032328970] [2020-10-11 15:56:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:56:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:56:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:56:57,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032328970] [2020-10-11 15:56:57,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:56:57,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:56:57,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578150554] [2020-10-11 15:56:57,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:56:57,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:56:57,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:56:57,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:56:57,509 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-11 15:56:57,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:56:57,559 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-11 15:56:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:56:57,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-11 15:56:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:56:57,575 INFO L225 Difference]: With dead ends: 27 [2020-10-11 15:56:57,575 INFO L226 Difference]: Without dead ends: 23 [2020-10-11 15:56:57,583 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 [2020-10-11 15:56:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-11 15:56:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-11 15:56:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-11 15:56:57,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-10-11 15:56:57,625 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-10-11 15:56:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:56:57,626 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-10-11 15:56:57,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:56:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-10-11 15:56:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-11 15:56:57,626 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:56:57,627 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-11 15:56:57,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:56:57,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:56:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:56:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-10-11 15:56:57,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:56:57,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288456903] [2020-10-11 15:56:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:56:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:56:57,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:56:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:56:57,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:56:57,704 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:56:57,705 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:56:57,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:56:57,707 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:56:57,708 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:56:57,708 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-11 15:56:57,714 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,715 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,715 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,715 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,715 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,716 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,716 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,716 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,716 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,716 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,718 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,718 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,718 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,718 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,719 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,720 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,720 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,720 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,721 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,721 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:57,723 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:56:57,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:56:57,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:56:57,724 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:56:57,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:56:57,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:56:57,724 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:56:57,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:56:57,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:56:57,727 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:56:57,727 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-11 15:56:57,727 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-11 15:56:57,728 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-11 15:56:57,787 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-11 15:56:57,788 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-11 15:56:57,789 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-10-11 15:56:57,795 INFO L117 LiptonReduction]: Number of co-enabled transitions 900 [2020-10-11 15:56:58,966 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-11 15:56:59,286 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-11 15:56:59,397 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-11 15:56:59,539 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-11 15:56:59,614 INFO L132 LiptonReduction]: Checked pairs total: 2415 [2020-10-11 15:56:59,614 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-11 15:56:59,615 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-10-11 15:56:59,626 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-10-11 15:56:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-11 15:56:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 15:56:59,627 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:56:59,627 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 15:56:59,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:56:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:56:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-10-11 15:56:59,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:56:59,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473917965] [2020-10-11 15:56:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:56:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:56:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:56:59,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473917965] [2020-10-11 15:56:59,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:56:59,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:56:59,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327671103] [2020-10-11 15:56:59,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:56:59,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:56:59,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:56:59,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:56:59,670 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-10-11 15:56:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:56:59,733 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-10-11 15:56:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:56:59,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-11 15:56:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:56:59,739 INFO L225 Difference]: With dead ends: 242 [2020-10-11 15:56:59,740 INFO L226 Difference]: Without dead ends: 216 [2020-10-11 15:56:59,740 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 [2020-10-11 15:56:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-11 15:56:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-11 15:56:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-11 15:56:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-10-11 15:56:59,770 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-10-11 15:56:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:56:59,771 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-10-11 15:56:59,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:56:59,771 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-10-11 15:56:59,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:56:59,772 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:56:59,772 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:56:59,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:56:59,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:56:59,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:56:59,773 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-10-11 15:56:59,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:56:59,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58135719] [2020-10-11 15:56:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:56:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:56:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 15:56:59,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58135719] [2020-10-11 15:56:59,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:56:59,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:56:59,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058112379] [2020-10-11 15:56:59,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:56:59,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:56:59,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:56:59,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:56:59,827 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-10-11 15:56:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:56:59,866 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-10-11 15:56:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:56:59,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-11 15:56:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:56:59,869 INFO L225 Difference]: With dead ends: 203 [2020-10-11 15:56:59,869 INFO L226 Difference]: Without dead ends: 203 [2020-10-11 15:56:59,870 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:56:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-11 15:56:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-10-11 15:56:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-11 15:56:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-10-11 15:56:59,888 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-10-11 15:56:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:56:59,888 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-10-11 15:56:59,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:56:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-10-11 15:56:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:56:59,891 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:56:59,892 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-11 15:56:59,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:56:59,892 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:56:59,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:56:59,893 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-10-11 15:56:59,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:56:59,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933044750] [2020-10-11 15:56:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:56:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:56:59,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:56:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:56:59,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:56:59,974 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:56:59,975 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:56:59,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:56:59,976 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:56:59,976 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:56:59,980 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-11 15:56:59,989 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,989 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,989 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,990 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,990 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,991 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,992 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,992 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,992 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,992 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,993 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,993 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,993 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,993 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,994 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,994 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,994 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,994 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,994 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,995 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,995 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,995 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,996 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,996 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,996 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,996 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,998 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,998 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,998 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,999 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:56:59,999 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:00,000 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:00,001 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:00,001 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:00,001 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:00,001 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:00,004 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:57:00,005 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:57:00,005 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:57:00,005 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:57:00,005 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:57:00,005 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:57:00,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:57:00,005 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:57:00,006 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:57:00,007 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:57:00,007 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-11 15:57:00,008 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-11 15:57:00,008 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-11 15:57:00,054 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-11 15:57:00,054 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-11 15:57:00,056 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-10-11 15:57:00,061 INFO L117 LiptonReduction]: Number of co-enabled transitions 1470 [2020-10-11 15:57:01,445 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-11 15:57:01,546 INFO L132 LiptonReduction]: Checked pairs total: 4432 [2020-10-11 15:57:01,547 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-11 15:57:01,547 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-10-11 15:57:01,601 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-10-11 15:57:01,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-10-11 15:57:01,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 15:57:01,602 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:01,602 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 15:57:01,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-10-11 15:57:01,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:01,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205617515] [2020-10-11 15:57:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:01,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205617515] [2020-10-11 15:57:01,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:01,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:57:01,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761087238] [2020-10-11 15:57:01,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:57:01,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:57:01,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:01,633 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-10-11 15:57:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:01,692 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-10-11 15:57:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:57:01,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-11 15:57:01,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:01,708 INFO L225 Difference]: With dead ends: 1150 [2020-10-11 15:57:01,709 INFO L226 Difference]: Without dead ends: 1024 [2020-10-11 15:57:01,709 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 [2020-10-11 15:57:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-11 15:57:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-10-11 15:57:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-11 15:57:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-10-11 15:57:01,796 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-10-11 15:57:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:01,796 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-10-11 15:57:01,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:57:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-10-11 15:57:01,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:57:01,798 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:01,798 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:01,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:57:01,798 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:01,799 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-10-11 15:57:01,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:01,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231823197] [2020-10-11 15:57:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 15:57:01,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231823197] [2020-10-11 15:57:01,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:01,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:57:01,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757667697] [2020-10-11 15:57:01,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:57:01,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:01,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:57:01,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:57:01,891 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-10-11 15:57:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:01,933 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-10-11 15:57:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:57:01,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-11 15:57:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:01,941 INFO L225 Difference]: With dead ends: 1015 [2020-10-11 15:57:01,941 INFO L226 Difference]: Without dead ends: 1015 [2020-10-11 15:57:01,941 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:57:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-11 15:57:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-10-11 15:57:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-11 15:57:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-10-11 15:57:01,976 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-10-11 15:57:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:01,977 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-10-11 15:57:01,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:57:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-10-11 15:57:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:57:01,979 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:01,980 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-11 15:57:01,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:57:01,980 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:01,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:01,980 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-10-11 15:57:01,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:01,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030028550] [2020-10-11 15:57:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:01,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:02,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:02,016 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:57:02,017 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:57:02,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:57:02,017 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:57:02,018 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:57:02,018 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-11 15:57:02,025 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,025 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,025 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,025 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,026 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,026 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,026 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,026 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,026 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,027 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,027 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,027 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,027 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,027 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,027 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,028 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,028 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,028 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,028 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,028 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,028 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,029 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,029 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,029 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,029 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,029 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,029 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,030 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,030 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,030 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,030 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,031 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,031 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,032 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,033 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,033 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,033 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,033 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,036 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,037 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,037 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,037 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,037 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,046 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,047 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,047 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,047 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,047 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:02,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:57:02,068 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:57:02,069 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:57:02,069 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:57:02,069 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:57:02,069 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:57:02,069 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:57:02,069 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:57:02,069 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:57:02,071 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:57:02,071 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-11 15:57:02,071 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-11 15:57:02,071 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-11 15:57:02,154 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-11 15:57:02,154 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-11 15:57:02,158 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-10-11 15:57:02,170 INFO L117 LiptonReduction]: Number of co-enabled transitions 2120 [2020-10-11 15:57:03,680 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-11 15:57:03,780 INFO L132 LiptonReduction]: Checked pairs total: 7163 [2020-10-11 15:57:03,780 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-11 15:57:03,781 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-10-11 15:57:04,135 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-10-11 15:57:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-10-11 15:57:04,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 15:57:04,137 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:04,137 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 15:57:04,137 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:04,138 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-10-11 15:57:04,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:04,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045013587] [2020-10-11 15:57:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:04,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045013587] [2020-10-11 15:57:04,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:04,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:57:04,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386308676] [2020-10-11 15:57:04,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:57:04,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:04,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:57:04,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:04,165 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-10-11 15:57:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:04,275 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-10-11 15:57:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:57:04,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-11 15:57:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:04,332 INFO L225 Difference]: With dead ends: 5482 [2020-10-11 15:57:04,332 INFO L226 Difference]: Without dead ends: 4856 [2020-10-11 15:57:04,333 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 [2020-10-11 15:57:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-11 15:57:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-10-11 15:57:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-10-11 15:57:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-10-11 15:57:04,668 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-10-11 15:57:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:04,668 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-10-11 15:57:04,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:57:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-10-11 15:57:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:57:04,669 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:04,669 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:04,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 15:57:04,669 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:04,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:04,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-10-11 15:57:04,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:04,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629287237] [2020-10-11 15:57:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 15:57:04,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629287237] [2020-10-11 15:57:04,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:04,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:57:04,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202271164] [2020-10-11 15:57:04,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:57:04,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:04,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:57:04,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:57:04,702 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-10-11 15:57:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:04,786 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-10-11 15:57:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:57:04,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-11 15:57:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:04,838 INFO L225 Difference]: With dead ends: 4995 [2020-10-11 15:57:04,838 INFO L226 Difference]: Without dead ends: 4995 [2020-10-11 15:57:04,838 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:57:04,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-11 15:57:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-10-11 15:57:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-10-11 15:57:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-10-11 15:57:05,058 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-10-11 15:57:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:05,059 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-10-11 15:57:05,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:57:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-10-11 15:57:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 15:57:05,061 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:05,061 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:05,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 15:57:05,061 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:05,061 INFO L82 PathProgramCache]: Analyzing trace with hash 172994846, now seen corresponding path program 1 times [2020-10-11 15:57:05,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:05,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089312539] [2020-10-11 15:57:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:57:05,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089312539] [2020-10-11 15:57:05,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271156601] [2020-10-11 15:57:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:57:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:05,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 15:57:05,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:57:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:57:05,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:57:05,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-11 15:57:05,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397256712] [2020-10-11 15:57:05,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:57:05,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:05,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:57:05,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:57:05,234 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2020-10-11 15:57:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:05,306 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2020-10-11 15:57:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:57:05,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-11 15:57:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:05,354 INFO L225 Difference]: With dead ends: 4793 [2020-10-11 15:57:05,354 INFO L226 Difference]: Without dead ends: 4793 [2020-10-11 15:57:05,355 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:57:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-11 15:57:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2020-10-11 15:57:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-10-11 15:57:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-10-11 15:57:05,535 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2020-10-11 15:57:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:05,535 INFO L481 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-10-11 15:57:05,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:57:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-10-11 15:57:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:57:05,538 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:05,538 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:05,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-11 15:57:05,753 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:05,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:05,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-10-11 15:57:05,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:05,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828307683] [2020-10-11 15:57:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:05,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:05,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:05,814 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:57:05,814 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:57:05,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 15:57:05,815 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:57:05,815 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:57:05,816 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-11 15:57:05,827 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,828 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,828 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,828 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,828 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,828 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,829 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,829 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,829 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,829 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,829 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,829 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,829 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,830 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,830 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,830 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,830 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,830 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,830 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,831 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,831 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,832 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,832 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,832 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,832 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,832 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,833 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,833 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,833 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,833 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,833 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,833 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,834 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,834 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,834 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,834 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,835 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,835 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,835 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,837 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,838 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,839 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,839 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,839 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,839 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,840 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,841 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,841 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,841 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,841 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,843 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,843 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,843 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,843 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,843 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,845 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,845 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,845 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,846 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,846 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:05,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:57:05,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:57:05,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:57:05,851 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:57:05,851 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:57:05,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:57:05,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:57:05,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:57:05,852 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:57:05,853 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:57:05,854 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-11 15:57:05,854 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-11 15:57:05,854 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-11 15:57:05,980 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-11 15:57:05,981 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-11 15:57:05,985 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-10-11 15:57:06,011 INFO L117 LiptonReduction]: Number of co-enabled transitions 2850 [2020-10-11 15:57:07,441 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-11 15:57:07,878 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-11 15:57:07,965 INFO L132 LiptonReduction]: Checked pairs total: 9531 [2020-10-11 15:57:07,965 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-11 15:57:07,966 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-10-11 15:57:10,354 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-10-11 15:57:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-10-11 15:57:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 15:57:10,354 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:10,354 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 15:57:10,354 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:10,355 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-10-11 15:57:10,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:10,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963054217] [2020-10-11 15:57:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:10,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963054217] [2020-10-11 15:57:10,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:10,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:57:10,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344177869] [2020-10-11 15:57:10,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:57:10,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:10,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:57:10,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:10,371 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-10-11 15:57:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:10,724 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-10-11 15:57:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:57:10,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-11 15:57:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:10,867 INFO L225 Difference]: With dead ends: 26310 [2020-10-11 15:57:10,867 INFO L226 Difference]: Without dead ends: 23184 [2020-10-11 15:57:10,867 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 [2020-10-11 15:57:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-10-11 15:57:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-10-11 15:57:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-10-11 15:57:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-10-11 15:57:13,458 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-10-11 15:57:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:13,458 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-10-11 15:57:13,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:57:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-10-11 15:57:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:57:13,458 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:13,458 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:13,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 15:57:13,459 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-10-11 15:57:13,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:13,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930482244] [2020-10-11 15:57:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 15:57:13,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930482244] [2020-10-11 15:57:13,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:13,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:57:13,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262821623] [2020-10-11 15:57:13,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:57:13,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:13,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:57:13,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:57:13,496 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-10-11 15:57:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:13,662 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-10-11 15:57:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:57:13,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-11 15:57:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:13,822 INFO L225 Difference]: With dead ends: 24543 [2020-10-11 15:57:13,822 INFO L226 Difference]: Without dead ends: 24543 [2020-10-11 15:57:13,823 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:57:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-10-11 15:57:14,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-10-11 15:57:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-10-11 15:57:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-10-11 15:57:15,099 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-10-11 15:57:15,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:15,099 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-10-11 15:57:15,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:57:15,099 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-10-11 15:57:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 15:57:15,100 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:15,101 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:15,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-11 15:57:15,101 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:15,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:15,101 INFO L82 PathProgramCache]: Analyzing trace with hash -447719219, now seen corresponding path program 1 times [2020-10-11 15:57:15,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:15,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951699564] [2020-10-11 15:57:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:57:15,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951699564] [2020-10-11 15:57:15,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642623483] [2020-10-11 15:57:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:57:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:15,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 15:57:15,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:57:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:57:15,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:57:15,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-11 15:57:15,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745146455] [2020-10-11 15:57:15,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:57:15,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:15,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:57:15,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:57:15,255 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-10-11 15:57:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:15,416 INFO L93 Difference]: Finished difference Result 22356 states and 87745 transitions. [2020-10-11 15:57:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:57:15,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-11 15:57:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:15,523 INFO L225 Difference]: With dead ends: 22356 [2020-10-11 15:57:15,523 INFO L226 Difference]: Without dead ends: 22356 [2020-10-11 15:57:15,524 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:57:15,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2020-10-11 15:57:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 21826. [2020-10-11 15:57:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21826 states. [2020-10-11 15:57:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21826 states to 21826 states and 86349 transitions. [2020-10-11 15:57:16,170 INFO L78 Accepts]: Start accepts. Automaton has 21826 states and 86349 transitions. Word has length 16 [2020-10-11 15:57:16,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:16,171 INFO L481 AbstractCegarLoop]: Abstraction has 21826 states and 86349 transitions. [2020-10-11 15:57:16,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:57:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 21826 states and 86349 transitions. [2020-10-11 15:57:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 15:57:16,178 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:16,178 INFO L421 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:16,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-11 15:57:16,392 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:16,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-10-11 15:57:16,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:16,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028289192] [2020-10-11 15:57:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:16,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:16,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:16,443 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:57:16,443 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:57:16,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-11 15:57:16,444 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:57:16,445 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:57:16,446 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-11 15:57:16,463 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,463 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,463 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,464 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,464 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,464 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,464 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,464 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,464 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,465 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,465 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,465 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,465 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,465 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,465 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,466 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,466 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,466 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,466 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,466 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,466 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,466 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,467 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,467 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,467 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,467 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,467 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,467 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,468 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,468 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,468 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,468 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,468 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,468 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,468 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,469 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,469 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,469 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,469 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,469 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,469 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,469 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,470 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,470 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,470 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,470 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,470 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,472 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,472 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,472 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,472 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,472 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,474 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,474 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,474 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,474 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,474 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,476 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,476 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,476 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,476 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,477 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,478 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,478 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,478 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,478 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,479 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,480 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,480 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,480 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,480 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,480 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:16,487 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:57:16,487 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:57:16,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:57:16,487 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:57:16,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:57:16,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:57:16,488 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:57:16,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:57:16,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:57:16,489 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:57:16,489 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-11 15:57:16,490 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-11 15:57:16,490 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-11 15:57:17,152 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-11 15:57:17,153 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-11 15:57:17,161 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-10-11 15:57:17,203 INFO L117 LiptonReduction]: Number of co-enabled transitions 3660 [2020-10-11 15:57:18,872 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-11 15:57:18,973 INFO L132 LiptonReduction]: Checked pairs total: 14446 [2020-10-11 15:57:18,973 INFO L134 LiptonReduction]: Total number of compositions: 76 [2020-10-11 15:57:18,974 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-10-11 15:57:59,790 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-10-11 15:57:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-10-11 15:57:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 15:57:59,791 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:59,791 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 15:57:59,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-10-11 15:57:59,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:59,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705463383] [2020-10-11 15:57:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:59,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705463383] [2020-10-11 15:57:59,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:59,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:57:59,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197903329] [2020-10-11 15:57:59,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:57:59,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:59,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:57:59,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:59,820 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-10-11 15:58:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:00,640 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-10-11 15:58:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:58:00,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-11 15:58:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:05,193 INFO L225 Difference]: With dead ends: 127122 [2020-10-11 15:58:05,194 INFO L226 Difference]: Without dead ends: 111496 [2020-10-11 15:58:05,194 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 [2020-10-11 15:58:07,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-10-11 15:58:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-10-11 15:58:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-10-11 15:58:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-10-11 15:58:11,124 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-10-11 15:58:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:11,124 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-10-11 15:58:11,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:58:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-10-11 15:58:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:58:11,125 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:11,125 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:11,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-11 15:58:11,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:11,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-10-11 15:58:11,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:11,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494794132] [2020-10-11 15:58:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 15:58:11,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494794132] [2020-10-11 15:58:11,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:11,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:11,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411068729] [2020-10-11 15:58:11,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:58:11,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:11,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:58:11,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:58:11,173 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-10-11 15:58:18,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:18,313 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-10-11 15:58:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:58:18,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-11 15:58:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:19,068 INFO L225 Difference]: With dead ends: 120747 [2020-10-11 15:58:19,068 INFO L226 Difference]: Without dead ends: 120747 [2020-10-11 15:58:19,069 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:58:21,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-10-11 15:58:24,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-10-11 15:58:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-10-11 15:58:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-10-11 15:58:25,462 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-10-11 15:58:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:25,462 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-10-11 15:58:25,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:58:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-10-11 15:58:25,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 15:58:25,464 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:25,464 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:25,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-11 15:58:25,464 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:25,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:25,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1082449829, now seen corresponding path program 1 times [2020-10-11 15:58:25,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:25,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109713808] [2020-10-11 15:58:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:25,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109713808] [2020-10-11 15:58:25,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559117411] [2020-10-11 15:58:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:25,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 15:58:25,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:25,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:25,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-11 15:58:25,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53699623] [2020-10-11 15:58:25,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:58:25,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:58:25,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:58:25,618 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2020-10-11 15:58:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:26,488 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2020-10-11 15:58:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:58:26,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-11 15:58:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:27,058 INFO L225 Difference]: With dead ends: 116193 [2020-10-11 15:58:27,058 INFO L226 Difference]: Without dead ends: 116193 [2020-10-11 15:58:27,059 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:58:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2020-10-11 15:58:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2020-10-11 15:58:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-10-11 15:58:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-10-11 15:58:40,079 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2020-10-11 15:58:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:40,079 INFO L481 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-10-11 15:58:40,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:58:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-10-11 15:58:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-11 15:58:40,081 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:40,081 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:40,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:40,282 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:40,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:40,282 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-10-11 15:58:40,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:40,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684652625] [2020-10-11 15:58:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:40,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684652625] [2020-10-11 15:58:40,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309449201] [2020-10-11 15:58:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:40,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-11 15:58:40,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:40,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:40,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-11 15:58:40,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657314645] [2020-10-11 15:58:40,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 15:58:40,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:40,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 15:58:40,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-11 15:58:40,464 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-10-11 15:58:41,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:41,314 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-10-11 15:58:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:58:41,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-11 15:58:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:41,799 INFO L225 Difference]: With dead ends: 116177 [2020-10-11 15:58:41,799 INFO L226 Difference]: Without dead ends: 116177 [2020-10-11 15:58:41,800 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-11 15:58:44,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-10-11 15:58:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-10-11 15:58:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-10-11 15:58:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-10-11 15:58:53,838 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-10-11 15:58:53,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:53,838 INFO L481 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-10-11 15:58:53,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 15:58:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-10-11 15:58:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-11 15:58:53,844 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:53,844 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:54,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:54,060 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:54,060 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-10-11 15:58:54,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:54,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846843250] [2020-10-11 15:58:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:54,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846843250] [2020-10-11 15:58:54,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311466403] [2020-10-11 15:58:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:54,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 15:58:54,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:54,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:54,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 15:58:54,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982807786] [2020-10-11 15:58:54,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 15:58:54,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:54,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 15:58:54,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-11 15:58:54,229 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-10-11 15:58:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:55,144 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-10-11 15:58:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:55,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-11 15:58:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:55,683 INFO L225 Difference]: With dead ends: 116113 [2020-10-11 15:58:55,684 INFO L226 Difference]: Without dead ends: 116113 [2020-10-11 15:58:55,684 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-11 15:59:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-10-11 15:59:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-10-11 15:59:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-10-11 15:59:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-10-11 15:59:02,715 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-10-11 15:59:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:02,715 INFO L481 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-10-11 15:59:02,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 15:59:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-10-11 15:59:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 15:59:02,732 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:02,732 INFO L421 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:02,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-11 15:59:02,947 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:02,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-10-11 15:59:02,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:02,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693252325] [2020-10-11 15:59:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:59:02,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:59:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:59:02,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:59:03,010 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:59:03,010 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:59:03,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-11 15:59:03,011 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:59:03,013 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:59:03,014 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-11 15:59:03,024 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,024 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,024 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,025 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,025 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,025 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,025 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,025 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,026 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,026 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,026 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,026 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,026 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,027 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,027 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,027 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,027 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,027 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,027 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,028 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,028 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,028 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,028 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,028 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,028 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,029 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,029 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,029 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,029 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,029 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,029 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,030 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,030 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,030 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,030 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,030 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,030 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,031 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,031 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,033 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,033 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,034 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,034 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,034 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,034 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,034 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,034 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,035 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,035 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,035 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,036 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,036 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,036 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,036 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,039 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,039 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,040 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,040 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,040 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,043 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,043 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,044 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,044 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,044 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,046 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,046 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,046 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,047 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,047 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,049 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,049 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,049 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,049 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,049 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,051 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,052 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,052 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,052 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,052 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,054 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,054 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,054 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,054 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,055 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:03,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:59:03,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:59:03,065 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:59:03,065 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:59:03,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:59:03,065 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:59:03,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:59:03,066 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:59:03,066 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:59:03,068 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:59:03,068 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-11 15:59:03,068 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-11 15:59:03,068 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-11 15:59:05,959 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-11 15:59:05,959 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-11 15:59:06,011 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-10-11 15:59:06,165 INFO L117 LiptonReduction]: Number of co-enabled transitions 4550 [2020-10-11 15:59:08,550 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-11 15:59:08,661 INFO L132 LiptonReduction]: Checked pairs total: 19547 [2020-10-11 15:59:08,662 INFO L134 LiptonReduction]: Total number of compositions: 80 [2020-10-11 15:59:08,664 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-10-11 16:10:24,353 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-11 16:10:24,356 WARN L235 ceAbstractionStarter]: Timeout [2020-10-11 16:10:24,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 04:10:24 BasicIcfg [2020-10-11 16:10:24,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 16:10:24,357 INFO L168 Benchmark]: Toolchain (without parser) took 810598.59 ms. Allocated memory was 245.9 MB in the beginning and 5.5 GB in the end (delta: 5.3 GB). Free memory was 198.7 MB in the beginning and 3.3 GB in the end (delta: -3.1 GB). Peak memory consumption was 6.4 GB. Max. memory is 14.2 GB. [2020-10-11 16:10:24,358 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 245.9 MB. Free memory is still 219.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:10:24,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.99 ms. Allocated memory was 245.9 MB in the beginning and 297.3 MB in the end (delta: 51.4 MB). Free memory was 198.7 MB in the beginning and 252.9 MB in the end (delta: -54.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:24,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.53 ms. Allocated memory is still 297.3 MB. Free memory was 252.9 MB in the beginning and 250.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:24,359 INFO L168 Benchmark]: Boogie Preprocessor took 29.73 ms. Allocated memory is still 297.3 MB. Free memory was 250.4 MB in the beginning and 247.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:24,360 INFO L168 Benchmark]: RCFGBuilder took 455.34 ms. Allocated memory is still 297.3 MB. Free memory was 247.9 MB in the beginning and 226.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:24,361 INFO L168 Benchmark]: TraceAbstraction took 809282.19 ms. Allocated memory was 297.3 MB in the beginning and 5.5 GB in the end (delta: 5.2 GB). Free memory was 226.0 MB in the beginning and 3.3 GB in the end (delta: -3.1 GB). Peak memory consumption was 6.4 GB. Max. memory is 14.2 GB. [2020-10-11 16:10:24,363 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 245.9 MB. Free memory is still 219.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 739.99 ms. Allocated memory was 245.9 MB in the beginning and 297.3 MB in the end (delta: 51.4 MB). Free memory was 198.7 MB in the beginning and 252.9 MB in the end (delta: -54.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 85.53 ms. Allocated memory is still 297.3 MB. Free memory was 252.9 MB in the beginning and 250.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.73 ms. Allocated memory is still 297.3 MB. Free memory was 250.4 MB in the beginning and 247.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 455.34 ms. Allocated memory is still 297.3 MB. Free memory was 247.9 MB in the beginning and 226.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 809282.19 ms. Allocated memory was 297.3 MB in the beginning and 5.5 GB in the end (delta: 5.2 GB). Free memory was 226.0 MB in the beginning and 3.3 GB in the end (delta: -3.1 GB). Peak memory consumption was 6.4 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 263 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 7 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 67 PlacesBefore, 15 PlacesAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 71 TotalNumberOfCompositions, 397 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 689 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 127 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 75 PlacesBefore, 25 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 67 TotalNumberOfCompositions, 2415 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1100 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 181 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 83 PlacesBefore, 31 PlacesAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 4432 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1301 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 230 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 91 PlacesBefore, 37 PlacesAfterwards, 92 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 7163 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2175 VarBasedMoverChecksPositive, 80 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 524 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 99 PlacesBefore, 43 PlacesAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 75 TotalNumberOfCompositions, 9531 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2178 VarBasedMoverChecksPositive, 70 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 420 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 107 PlacesBefore, 49 PlacesAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 76 TotalNumberOfCompositions, 14446 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3622 VarBasedMoverChecksPositive, 131 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 89 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 977 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.5s, 115 PlacesBefore, 55 PlacesAfterwards, 113 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 80 TotalNumberOfCompositions, 19547 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 507863 states. Currently 23234 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 808.9s, OverallIterations: 22, TraceHistogramMax: 7, AutomataDifference: 19.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 736.6s, HoareTripleCheckerStatistics: 542 SDtfs, 600 SDslu, 671 SDs, 0 SdLazy, 272 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 49.8s AutomataMinimizationTime, 16 MinimizatonAttempts, 6288 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 14479 SizeOfPredicates, 5 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 21 InterpolantComputations, 11 PerfectInterpolantSequences, 25/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown