/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 10:51:26,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 10:51:26,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 10:51:26,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 10:51:26,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 10:51:26,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 10:51:26,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 10:51:26,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 10:51:26,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 10:51:26,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 10:51:26,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 10:51:26,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 10:51:26,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 10:51:26,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 10:51:26,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 10:51:26,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 10:51:26,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 10:51:26,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 10:51:26,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 10:51:26,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 10:51:26,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 10:51:26,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 10:51:26,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 10:51:26,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 10:51:26,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 10:51:26,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 10:51:26,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 10:51:26,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 10:51:26,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 10:51:26,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 10:51:26,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 10:51:26,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 10:51:26,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 10:51:26,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 10:51:26,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 10:51:26,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 10:51:26,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 10:51:26,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 10:51:26,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 10:51:26,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 10:51:26,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 10:51:26,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 10:51:26,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 10:51:26,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 10:51:26,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 10:51:26,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 10:51:26,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 10:51:26,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 10:51:26,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 10:51:26,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 10:51:26,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 10:51:26,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 10:51:26,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 10:51:26,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 10:51:26,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 10:51:26,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 10:51:26,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 10:51:26,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 10:51:26,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:51:26,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 10:51:26,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 10:51:26,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 10:51:26,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 10:51:26,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 10:51:26,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 10:51:26,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 10:51:26,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 10:51:26,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 10:51:26,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 10:51:26,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 10:51:26,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 10:51:26,726 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 10:51:26,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 10:51:26,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ad03219d/830cc00064934489afef4a7f34d452dc/FLAG6b2fb41fb [2020-10-16 10:51:27,315 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 10:51:27,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 10:51:27,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ad03219d/830cc00064934489afef4a7f34d452dc/FLAG6b2fb41fb [2020-10-16 10:51:27,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ad03219d/830cc00064934489afef4a7f34d452dc [2020-10-16 10:51:27,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 10:51:27,629 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 10:51:27,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 10:51:27,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 10:51:27,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 10:51:27,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:51:27" (1/1) ... [2020-10-16 10:51:27,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453ce73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:27, skipping insertion in model container [2020-10-16 10:51:27,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:51:27" (1/1) ... [2020-10-16 10:51:27,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 10:51:27,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 10:51:28,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:51:28,199 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 10:51:28,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:51:28,362 INFO L208 MainTranslator]: Completed translation [2020-10-16 10:51:28,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28 WrapperNode [2020-10-16 10:51:28,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 10:51:28,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 10:51:28,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 10:51:28,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 10:51:28,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 10:51:28,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 10:51:28,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 10:51:28,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 10:51:28,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 10:51:28,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 10:51:28,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 10:51:28,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 10:51:28,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:51:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 10:51:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 10:51:28,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 10:51:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 10:51:28,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 10:51:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 10:51:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 10:51:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 10:51:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 10:51:28,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 10:51:28,549 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 10:51:28,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 10:51:28,936 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-16 10:51:28,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:51:28 BoogieIcfgContainer [2020-10-16 10:51:28,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 10:51:28,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 10:51:28,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 10:51:28,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 10:51:28,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 10:51:27" (1/3) ... [2020-10-16 10:51:28,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5fa0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:51:28, skipping insertion in model container [2020-10-16 10:51:28,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (2/3) ... [2020-10-16 10:51:28,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5fa0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:51:28, skipping insertion in model container [2020-10-16 10:51:28,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:51:28" (3/3) ... [2020-10-16 10:51:28,955 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-16 10:51:28,968 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 10:51:28,969 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 10:51:28,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 10:51:28,977 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 10:51:29,009 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,009 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,010 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,010 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,011 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,012 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,020 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,031 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,032 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,032 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,050 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 10:51:29,065 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 10:51:29,088 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 10:51:29,089 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 10:51:29,089 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 10:51:29,089 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 10:51:29,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 10:51:29,090 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 10:51:29,090 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 10:51:29,090 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 10:51:29,105 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 10:51:29,109 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-16 10:51:29,112 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-16 10:51:29,114 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-16 10:51:29,169 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-16 10:51:29,169 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 10:51:29,177 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-16 10:51:29,182 INFO L117 LiptonReduction]: Number of co-enabled transitions 3196 [2020-10-16 10:51:30,406 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-16 10:51:30,511 INFO L132 LiptonReduction]: Checked pairs total: 12166 [2020-10-16 10:51:30,511 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 10:51:30,519 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 148 flow [2020-10-16 10:51:30,566 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 719 states. [2020-10-16 10:51:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states. [2020-10-16 10:51:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 10:51:30,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:30,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 10:51:30,576 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:30,582 INFO L82 PathProgramCache]: Analyzing trace with hash 14012195, now seen corresponding path program 1 times [2020-10-16 10:51:30,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:30,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714723632] [2020-10-16 10:51:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:30,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714723632] [2020-10-16 10:51:30,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:30,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:51:30,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957073641] [2020-10-16 10:51:30,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 10:51:30,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:30,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 10:51:30,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 10:51:30,770 INFO L87 Difference]: Start difference. First operand 719 states. Second operand 2 states. [2020-10-16 10:51:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:30,816 INFO L93 Difference]: Finished difference Result 719 states and 2103 transitions. [2020-10-16 10:51:30,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 10:51:30,817 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-16 10:51:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:30,848 INFO L225 Difference]: With dead ends: 719 [2020-10-16 10:51:30,848 INFO L226 Difference]: Without dead ends: 680 [2020-10-16 10:51:30,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 10:51:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-10-16 10:51:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2020-10-16 10:51:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-10-16 10:51:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2018 transitions. [2020-10-16 10:51:30,951 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2018 transitions. Word has length 4 [2020-10-16 10:51:30,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:30,952 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 2018 transitions. [2020-10-16 10:51:30,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 10:51:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2018 transitions. [2020-10-16 10:51:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 10:51:30,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:30,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:30,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 10:51:30,955 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:30,955 INFO L82 PathProgramCache]: Analyzing trace with hash -870713509, now seen corresponding path program 1 times [2020-10-16 10:51:30,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:30,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860268007] [2020-10-16 10:51:30,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:31,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860268007] [2020-10-16 10:51:31,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:31,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:51:31,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777157791] [2020-10-16 10:51:31,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:31,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:31,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:31,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,081 INFO L87 Difference]: Start difference. First operand 680 states and 2018 transitions. Second operand 3 states. [2020-10-16 10:51:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:31,131 INFO L93 Difference]: Finished difference Result 685 states and 1989 transitions. [2020-10-16 10:51:31,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:31,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 10:51:31,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:31,144 INFO L225 Difference]: With dead ends: 685 [2020-10-16 10:51:31,145 INFO L226 Difference]: Without dead ends: 568 [2020-10-16 10:51:31,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-16 10:51:31,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 550. [2020-10-16 10:51:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-16 10:51:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1644 transitions. [2020-10-16 10:51:31,198 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1644 transitions. Word has length 9 [2020-10-16 10:51:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:31,199 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 1644 transitions. [2020-10-16 10:51:31,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1644 transitions. [2020-10-16 10:51:31,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:51:31,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:31,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:31,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 10:51:31,204 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1073713561, now seen corresponding path program 1 times [2020-10-16 10:51:31,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:31,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354666888] [2020-10-16 10:51:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:31,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354666888] [2020-10-16 10:51:31,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:31,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:51:31,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89120345] [2020-10-16 10:51:31,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:31,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:31,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:31,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,282 INFO L87 Difference]: Start difference. First operand 550 states and 1644 transitions. Second operand 3 states. [2020-10-16 10:51:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:31,325 INFO L93 Difference]: Finished difference Result 531 states and 1570 transitions. [2020-10-16 10:51:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:31,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 10:51:31,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:31,330 INFO L225 Difference]: With dead ends: 531 [2020-10-16 10:51:31,330 INFO L226 Difference]: Without dead ends: 408 [2020-10-16 10:51:31,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-16 10:51:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2020-10-16 10:51:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-16 10:51:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1242 transitions. [2020-10-16 10:51:31,346 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1242 transitions. Word has length 11 [2020-10-16 10:51:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:31,347 INFO L481 AbstractCegarLoop]: Abstraction has 408 states and 1242 transitions. [2020-10-16 10:51:31,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1242 transitions. [2020-10-16 10:51:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 10:51:31,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:31,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:31,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 10:51:31,351 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash -783095282, now seen corresponding path program 1 times [2020-10-16 10:51:31,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:31,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220140849] [2020-10-16 10:51:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:31,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220140849] [2020-10-16 10:51:31,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:31,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:51:31,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891421872] [2020-10-16 10:51:31,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:31,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:31,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:31,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,401 INFO L87 Difference]: Start difference. First operand 408 states and 1242 transitions. Second operand 3 states. [2020-10-16 10:51:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:31,452 INFO L93 Difference]: Finished difference Result 538 states and 1566 transitions. [2020-10-16 10:51:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:31,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 10:51:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:31,456 INFO L225 Difference]: With dead ends: 538 [2020-10-16 10:51:31,456 INFO L226 Difference]: Without dead ends: 424 [2020-10-16 10:51:31,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-16 10:51:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 398. [2020-10-16 10:51:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-16 10:51:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1161 transitions. [2020-10-16 10:51:31,470 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1161 transitions. Word has length 17 [2020-10-16 10:51:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:31,470 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 1161 transitions. [2020-10-16 10:51:31,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1161 transitions. [2020-10-16 10:51:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 10:51:31,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:31,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:31,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 10:51:31,472 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1243088422, now seen corresponding path program 1 times [2020-10-16 10:51:31,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:31,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716265859] [2020-10-16 10:51:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:31,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716265859] [2020-10-16 10:51:31,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:31,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:51:31,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478730472] [2020-10-16 10:51:31,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:31,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:31,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:31,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,506 INFO L87 Difference]: Start difference. First operand 398 states and 1161 transitions. Second operand 3 states. [2020-10-16 10:51:31,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:31,531 INFO L93 Difference]: Finished difference Result 702 states and 2033 transitions. [2020-10-16 10:51:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:31,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 10:51:31,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:31,537 INFO L225 Difference]: With dead ends: 702 [2020-10-16 10:51:31,537 INFO L226 Difference]: Without dead ends: 702 [2020-10-16 10:51:31,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-16 10:51:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 422. [2020-10-16 10:51:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-16 10:51:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1239 transitions. [2020-10-16 10:51:31,555 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1239 transitions. Word has length 17 [2020-10-16 10:51:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:31,555 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 1239 transitions. [2020-10-16 10:51:31,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1239 transitions. [2020-10-16 10:51:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 10:51:31,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:31,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:31,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 10:51:31,557 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:31,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:31,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1398088036, now seen corresponding path program 2 times [2020-10-16 10:51:31,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:31,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050677680] [2020-10-16 10:51:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:31,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050677680] [2020-10-16 10:51:31,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:31,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:51:31,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103271939] [2020-10-16 10:51:31,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:31,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:31,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:31,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,589 INFO L87 Difference]: Start difference. First operand 422 states and 1239 transitions. Second operand 3 states. [2020-10-16 10:51:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:31,616 INFO L93 Difference]: Finished difference Result 650 states and 1805 transitions. [2020-10-16 10:51:31,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:31,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 10:51:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:31,621 INFO L225 Difference]: With dead ends: 650 [2020-10-16 10:51:31,622 INFO L226 Difference]: Without dead ends: 642 [2020-10-16 10:51:31,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-16 10:51:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 456. [2020-10-16 10:51:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-16 10:51:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1316 transitions. [2020-10-16 10:51:31,639 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1316 transitions. Word has length 17 [2020-10-16 10:51:31,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:31,639 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 1316 transitions. [2020-10-16 10:51:31,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1316 transitions. [2020-10-16 10:51:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 10:51:31,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:31,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:31,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 10:51:31,641 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:31,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1301572, now seen corresponding path program 2 times [2020-10-16 10:51:31,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:31,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212358123] [2020-10-16 10:51:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:31,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212358123] [2020-10-16 10:51:31,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:31,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:51:31,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315187754] [2020-10-16 10:51:31,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:31,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:31,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:31,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,668 INFO L87 Difference]: Start difference. First operand 456 states and 1316 transitions. Second operand 3 states. [2020-10-16 10:51:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:31,734 INFO L93 Difference]: Finished difference Result 406 states and 1059 transitions. [2020-10-16 10:51:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:31,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 10:51:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:31,736 INFO L225 Difference]: With dead ends: 406 [2020-10-16 10:51:31,737 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 10:51:31,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 10:51:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 216. [2020-10-16 10:51:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 10:51:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 520 transitions. [2020-10-16 10:51:31,745 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 520 transitions. Word has length 17 [2020-10-16 10:51:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:31,745 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 520 transitions. [2020-10-16 10:51:31,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 520 transitions. [2020-10-16 10:51:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 10:51:31,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:31,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:31,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 10:51:31,747 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:31,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:31,747 INFO L82 PathProgramCache]: Analyzing trace with hash 567307087, now seen corresponding path program 1 times [2020-10-16 10:51:31,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:31,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289170803] [2020-10-16 10:51:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:31,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289170803] [2020-10-16 10:51:31,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:31,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:51:31,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352796405] [2020-10-16 10:51:31,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:31,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:31,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:31,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,777 INFO L87 Difference]: Start difference. First operand 216 states and 520 transitions. Second operand 3 states. [2020-10-16 10:51:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:31,789 INFO L93 Difference]: Finished difference Result 224 states and 530 transitions. [2020-10-16 10:51:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:31,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 10:51:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:31,792 INFO L225 Difference]: With dead ends: 224 [2020-10-16 10:51:31,792 INFO L226 Difference]: Without dead ends: 208 [2020-10-16 10:51:31,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-16 10:51:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-10-16 10:51:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-16 10:51:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 496 transitions. [2020-10-16 10:51:31,799 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 496 transitions. Word has length 19 [2020-10-16 10:51:31,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:31,799 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 496 transitions. [2020-10-16 10:51:31,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 496 transitions. [2020-10-16 10:51:31,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 10:51:31,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:31,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:31,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 10:51:31,801 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:31,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash 684902644, now seen corresponding path program 1 times [2020-10-16 10:51:31,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:31,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546003511] [2020-10-16 10:51:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:31,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546003511] [2020-10-16 10:51:31,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:31,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:51:31,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051538436] [2020-10-16 10:51:31,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:31,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:31,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:31,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,831 INFO L87 Difference]: Start difference. First operand 208 states and 496 transitions. Second operand 3 states. [2020-10-16 10:51:31,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:31,837 INFO L93 Difference]: Finished difference Result 142 states and 367 transitions. [2020-10-16 10:51:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:31,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 10:51:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:31,838 INFO L225 Difference]: With dead ends: 142 [2020-10-16 10:51:31,839 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 10:51:31,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 10:51:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 10:51:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 10:51:31,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 10:51:31,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-16 10:51:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:31,840 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 10:51:31,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 10:51:31,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 10:51:31,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 10:51:31,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 10:51:31 BasicIcfg [2020-10-16 10:51:31,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 10:51:31,847 INFO L168 Benchmark]: Toolchain (without parser) took 4218.34 ms. Allocated memory was 147.3 MB in the beginning and 246.9 MB in the end (delta: 99.6 MB). Free memory was 102.0 MB in the beginning and 187.5 MB in the end (delta: -85.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:31,848 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 10:51:31,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.99 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 165.2 MB in the end (delta: -63.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:31,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.53 ms. Allocated memory is still 204.5 MB. Free memory was 165.2 MB in the beginning and 163.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:31,851 INFO L168 Benchmark]: Boogie Preprocessor took 29.83 ms. Allocated memory is still 204.5 MB. Free memory was 163.2 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:31,851 INFO L168 Benchmark]: RCFGBuilder took 466.56 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 136.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:31,852 INFO L168 Benchmark]: TraceAbstraction took 2904.09 ms. Allocated memory was 204.5 MB in the beginning and 246.9 MB in the end (delta: 42.5 MB). Free memory was 136.8 MB in the beginning and 187.5 MB in the end (delta: -50.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 10:51:31,856 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.99 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 165.2 MB in the end (delta: -63.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 76.53 ms. Allocated memory is still 204.5 MB. Free memory was 165.2 MB in the beginning and 163.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.83 ms. Allocated memory is still 204.5 MB. Free memory was 163.2 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.56 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 136.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2904.09 ms. Allocated memory was 204.5 MB in the beginning and 246.9 MB in the end (delta: 42.5 MB). Free memory was 136.8 MB in the beginning and 187.5 MB in the end (delta: -50.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1733 VarBasedMoverChecksPositive, 114 VarBasedMoverChecksNegative, 49 SemBasedMoverChecksPositive, 65 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 748 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 84 PlacesBefore, 52 PlacesAfterwards, 103 TransitionsBefore, 63 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 52 TotalNumberOfCompositions, 12166 MoverChecksTotal - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 542 SDtfs, 221 SDslu, 266 SDs, 0 SdLazy, 93 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=719occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 548 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 3005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...