/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:47:59,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:47:59,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:47:59,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:47:59,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:47:59,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:47:59,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:47:59,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:47:59,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:47:59,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:47:59,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:47:59,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:47:59,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:47:59,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:47:59,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:47:59,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:47:59,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:47:59,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:47:59,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:47:59,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:47:59,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:47:59,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:47:59,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:47:59,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:47:59,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:47:59,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:47:59,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:47:59,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:47:59,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:47:59,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:47:59,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:47:59,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:47:59,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:47:59,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:47:59,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:47:59,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:47:59,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:47:59,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:47:59,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:47:59,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:47:59,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:47:59,629 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:47:59,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:47:59,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:47:59,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:47:59,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:47:59,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:47:59,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:47:59,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:47:59,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:47:59,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:47:59,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:47:59,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:47:59,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:47:59,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:47:59,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:47:59,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:47:59,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:47:59,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:47:59,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:47:59,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:47:59,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:47:59,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:47:59,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:47:59,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:47:59,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:47:59,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:47:59,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:47:59,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:47:59,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:47:59,959 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:47:59,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-10-16 01:48:00,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6c142c4/61651c7f3bb845dd9a2c6ea1135fe688/FLAG91e2ab0b7 [2020-10-16 01:48:00,570 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:48:00,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-10-16 01:48:00,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6c142c4/61651c7f3bb845dd9a2c6ea1135fe688/FLAG91e2ab0b7 [2020-10-16 01:48:00,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6c142c4/61651c7f3bb845dd9a2c6ea1135fe688 [2020-10-16 01:48:00,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:48:00,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:48:00,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:48:00,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:48:00,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:48:00,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:48:00" (1/1) ... [2020-10-16 01:48:00,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f72e2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:00, skipping insertion in model container [2020-10-16 01:48:00,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:48:00" (1/1) ... [2020-10-16 01:48:00,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:48:01,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:48:01,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:48:01,471 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:48:01,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:48:01,595 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:48:01,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01 WrapperNode [2020-10-16 01:48:01,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:48:01,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:48:01,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:48:01,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:48:01,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:48:01,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:48:01,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:48:01,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:48:01,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (1/1) ... [2020-10-16 01:48:01,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:48:01,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:48:01,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:48:01,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:48:01,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (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 [2020-10-16 01:48:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-16 01:48:01,754 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-16 01:48:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:48:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:48:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:48:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:48:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:48:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:48:01,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:48:01,758 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 01:48:02,193 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:48:02,193 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-16 01:48:02,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:48:02 BoogieIcfgContainer [2020-10-16 01:48:02,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:48:02,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:48:02,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:48:02,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:48:02,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:48:00" (1/3) ... [2020-10-16 01:48:02,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519aa3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:48:02, skipping insertion in model container [2020-10-16 01:48:02,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:48:01" (2/3) ... [2020-10-16 01:48:02,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519aa3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:48:02, skipping insertion in model container [2020-10-16 01:48:02,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:48:02" (3/3) ... [2020-10-16 01:48:02,204 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2020-10-16 01:48:02,216 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:48:02,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:48:02,225 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:48:02,249 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,249 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,250 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,250 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,250 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,251 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,251 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,251 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,251 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,251 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,252 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,252 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,252 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,252 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,253 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,253 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,253 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,254 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,254 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,254 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,254 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,255 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,255 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,255 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,256 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,256 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,256 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,256 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,256 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,257 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,260 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,261 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,261 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,261 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,261 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,262 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,262 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,262 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,262 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,263 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,263 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:02,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 01:48:02,301 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:48:02,301 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:48:02,301 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:48:02,301 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:48:02,302 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:48:02,302 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:48:02,302 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:48:02,302 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:48:02,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 86 transitions, 177 flow [2020-10-16 01:48:02,364 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2020-10-16 01:48:02,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:02,371 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 6/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-10-16 01:48:02,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 86 transitions, 177 flow [2020-10-16 01:48:02,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 85 transitions, 173 flow [2020-10-16 01:48:02,381 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:48:02,383 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 173 flow [2020-10-16 01:48:02,386 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 85 transitions, 173 flow [2020-10-16 01:48:02,387 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 173 flow [2020-10-16 01:48:02,413 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2020-10-16 01:48:02,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:02,415 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 6/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-10-16 01:48:02,419 INFO L117 LiptonReduction]: Number of co-enabled transitions 2160 [2020-10-16 01:48:04,454 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 01:48:04,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 01:48:04,461 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 01:48:04,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 01:48:04,469 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 01:48:04,470 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 01:48:04,476 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 01:48:04,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 01:48:04,501 INFO L132 LiptonReduction]: Checked pairs total: 2372 [2020-10-16 01:48:04,502 INFO L134 LiptonReduction]: Total number of compositions: 101 [2020-10-16 01:48:04,505 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2126 [2020-10-16 01:48:04,511 INFO L129 PetriNetUnfolder]: 1/6 cut-off events. [2020-10-16 01:48:04,511 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:04,511 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:04,512 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:48:04,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:04,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash 11174652, now seen corresponding path program 1 times [2020-10-16 01:48:04,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:04,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426248013] [2020-10-16 01:48:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:04,703 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 01:48:04,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426248013] [2020-10-16 01:48:04,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:04,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:48:04,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139428659] [2020-10-16 01:48:04,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:48:04,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:04,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:48:04,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:48:04,735 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 187 [2020-10-16 01:48:04,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 27 flow. Second operand 3 states. [2020-10-16 01:48:04,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:04,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 187 [2020-10-16 01:48:04,740 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:04,765 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2020-10-16 01:48:04,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:04,765 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 16 events. 1/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 19. Up to 4 conditions per place. [2020-10-16 01:48:04,767 INFO L132 encePairwiseOnDemand]: 183/187 looper letters, 1 selfloop transitions, 2 changer transitions 5/13 dead transitions. [2020-10-16 01:48:04,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 39 flow [2020-10-16 01:48:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:48:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:48:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2020-10-16 01:48:04,785 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8342245989304813 [2020-10-16 01:48:04,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2020-10-16 01:48:04,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2020-10-16 01:48:04,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:04,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2020-10-16 01:48:04,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:48:04,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:48:04,805 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:48:04,807 INFO L185 Difference]: Start difference. First operand has 15 places, 12 transitions, 27 flow. Second operand 3 states and 468 transitions. [2020-10-16 01:48:04,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 39 flow [2020-10-16 01:48:04,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 13 transitions, 38 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:04,813 INFO L241 Difference]: Finished difference. Result has 17 places, 8 transitions, 26 flow [2020-10-16 01:48:04,816 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2020-10-16 01:48:04,817 INFO L342 CegarLoopForPetriNet]: 15 programPoint places, 2 predicate places. [2020-10-16 01:48:04,817 INFO L481 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 26 flow [2020-10-16 01:48:04,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:48:04,818 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:04,818 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:04,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:48:04,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:04,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1422714602, now seen corresponding path program 1 times [2020-10-16 01:48:04,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:04,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806909980] [2020-10-16 01:48:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:04,974 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 01:48:04,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806909980] [2020-10-16 01:48:04,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:04,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:48:04,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389272261] [2020-10-16 01:48:04,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:04,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:04,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:04,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:04,981 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 187 [2020-10-16 01:48:04,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 8 transitions, 26 flow. Second operand 7 states. [2020-10-16 01:48:04,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:04,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 187 [2020-10-16 01:48:04,982 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:05,058 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2020-10-16 01:48:05,058 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:05,058 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 17 events. 2/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 35. Up to 5 conditions per place. [2020-10-16 01:48:05,059 INFO L132 encePairwiseOnDemand]: 182/187 looper letters, 4 selfloop transitions, 3 changer transitions 4/12 dead transitions. [2020-10-16 01:48:05,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 59 flow [2020-10-16 01:48:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 747 transitions. [2020-10-16 01:48:05,064 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5706646294881589 [2020-10-16 01:48:05,064 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 747 transitions. [2020-10-16 01:48:05,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 747 transitions. [2020-10-16 01:48:05,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:05,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 747 transitions. [2020-10-16 01:48:05,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:05,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:05,071 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:05,071 INFO L185 Difference]: Start difference. First operand has 17 places, 8 transitions, 26 flow. Second operand 7 states and 747 transitions. [2020-10-16 01:48:05,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 59 flow [2020-10-16 01:48:05,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 53 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:48:05,073 INFO L241 Difference]: Finished difference. Result has 21 places, 8 transitions, 37 flow [2020-10-16 01:48:05,073 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37, PETRI_PLACES=21, PETRI_TRANSITIONS=8} [2020-10-16 01:48:05,074 INFO L342 CegarLoopForPetriNet]: 15 programPoint places, 6 predicate places. [2020-10-16 01:48:05,074 INFO L481 AbstractCegarLoop]: Abstraction has has 21 places, 8 transitions, 37 flow [2020-10-16 01:48:05,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:05,074 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:05,074 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:05,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:48:05,075 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:05,075 INFO L82 PathProgramCache]: Analyzing trace with hash -786886622, now seen corresponding path program 2 times [2020-10-16 01:48:05,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:05,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32714683] [2020-10-16 01:48:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:05,216 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 01:48:05,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32714683] [2020-10-16 01:48:05,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:05,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:48:05,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599026063] [2020-10-16 01:48:05,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:48:05,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:05,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:48:05,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:48:05,221 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 187 [2020-10-16 01:48:05,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 8 transitions, 37 flow. Second operand 6 states. [2020-10-16 01:48:05,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:05,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 187 [2020-10-16 01:48:05,222 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:05,282 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2020-10-16 01:48:05,282 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-16 01:48:05,282 INFO L80 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 10 events. 0/10 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2020-10-16 01:48:05,283 INFO L132 encePairwiseOnDemand]: 181/187 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2020-10-16 01:48:05,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 10 transitions, 64 flow [2020-10-16 01:48:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 760 transitions. [2020-10-16 01:48:05,287 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5805958747135218 [2020-10-16 01:48:05,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 760 transitions. [2020-10-16 01:48:05,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 760 transitions. [2020-10-16 01:48:05,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:05,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 760 transitions. [2020-10-16 01:48:05,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:05,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:05,295 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:05,295 INFO L185 Difference]: Start difference. First operand has 21 places, 8 transitions, 37 flow. Second operand 7 states and 760 transitions. [2020-10-16 01:48:05,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 10 transitions, 64 flow [2020-10-16 01:48:05,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 10 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 01:48:05,296 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2020-10-16 01:48:05,296 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2020-10-16 01:48:05,297 INFO L342 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2020-10-16 01:48:05,297 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2020-10-16 01:48:05,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:48:05,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:48:05,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:48:05 BasicIcfg [2020-10-16 01:48:05,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:48:05,306 INFO L168 Benchmark]: Toolchain (without parser) took 4348.45 ms. Allocated memory was 248.5 MB in the beginning and 367.5 MB in the end (delta: 119.0 MB). Free memory was 204.5 MB in the beginning and 211.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 112.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:48:05,307 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 248.5 MB. Free memory was 226.6 MB in the beginning and 225.7 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. [2020-10-16 01:48:05,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.38 ms. Allocated memory was 248.5 MB in the beginning and 306.2 MB in the end (delta: 57.7 MB). Free memory was 204.5 MB in the beginning and 259.3 MB in the end (delta: -54.8 MB). Peak memory consumption was 30.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:48:05,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.97 ms. Allocated memory is still 306.2 MB. Free memory was 259.3 MB in the beginning and 256.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:48:05,309 INFO L168 Benchmark]: Boogie Preprocessor took 29.36 ms. Allocated memory is still 306.2 MB. Free memory was 256.8 MB in the beginning and 255.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:48:05,310 INFO L168 Benchmark]: RCFGBuilder took 513.88 ms. Allocated memory is still 306.2 MB. Free memory was 255.1 MB in the beginning and 228.8 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:48:05,311 INFO L168 Benchmark]: TraceAbstraction took 3104.46 ms. Allocated memory was 306.2 MB in the beginning and 367.5 MB in the end (delta: 61.3 MB). Free memory was 228.0 MB in the beginning and 211.5 MB in the end (delta: 16.4 MB). Peak memory consumption was 77.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:48:05,316 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 248.5 MB. Free memory was 226.6 MB in the beginning and 225.7 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 640.38 ms. Allocated memory was 248.5 MB in the beginning and 306.2 MB in the end (delta: 57.7 MB). Free memory was 204.5 MB in the beginning and 259.3 MB in the end (delta: -54.8 MB). Peak memory consumption was 30.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 54.97 ms. Allocated memory is still 306.2 MB. Free memory was 259.3 MB in the beginning and 256.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.36 ms. Allocated memory is still 306.2 MB. Free memory was 256.8 MB in the beginning and 255.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 513.88 ms. Allocated memory is still 306.2 MB. Free memory was 255.1 MB in the beginning and 228.8 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3104.46 ms. Allocated memory was 306.2 MB in the beginning and 367.5 MB in the end (delta: 61.3 MB). Free memory was 228.0 MB in the beginning and 211.5 MB in the end (delta: 16.4 MB). Peak memory consumption was 77.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1611 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 33 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 83 PlacesBefore, 15 PlacesAfterwards, 85 TransitionsBefore, 12 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 101 TotalNumberOfCompositions, 2372 MoverChecksTotal - PositiveResult [Line: 679]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 15 SDtfs, 11 SDslu, 14 SDs, 0 SdLazy, 52 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 601 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...