/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:36:49,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:36:49,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:36:49,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:36:49,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:36:49,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:36:49,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:36:49,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:36:49,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:36:49,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:36:49,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:36:49,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:36:49,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:36:49,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:36:49,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:36:49,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:36:49,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:36:49,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:36:49,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:36:49,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:36:49,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:36:49,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:36:49,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:36:49,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:36:49,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 07:36:49,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 07:36:49,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 07:36:49,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 07:36:49,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 07:36:49,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 07:36:49,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:36:49,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:36:49,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:36:49,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:36:49,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:36:49,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:36:49,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:36:49,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:36:49,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:36:49,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:36:49,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:36:49,515 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-NoLbe.epf [2021-06-13 07:36:49,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:36:49,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:36:49,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:36:49,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:36:49,546 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:36:49,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:36:49,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:36:49,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:36:49,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:36:49,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:36:49,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:36:49,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:36:49,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:36:49,548 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:36:49,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:36:49,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:36:49,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:36:49,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:36:49,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:36:49,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:36:49,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:36:49,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:36:49,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:36:49,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:36:49,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:36:49,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:36:49,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:36:49,549 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:36:49,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:36:49,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:36:49,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:36:49,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:36:49,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:36:49,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:36:49,825 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:36:49,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2021-06-13 07:36:49,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3867ecb93/5621d94aea6c4f1d84ad9ac87c51db07/FLAG66f747c4f [2021-06-13 07:36:50,285 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:36:50,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2021-06-13 07:36:50,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3867ecb93/5621d94aea6c4f1d84ad9ac87c51db07/FLAG66f747c4f [2021-06-13 07:36:50,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3867ecb93/5621d94aea6c4f1d84ad9ac87c51db07 [2021-06-13 07:36:50,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:36:50,304 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:36:50,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:36:50,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:36:50,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:36:50,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1acef3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50, skipping insertion in model container [2021-06-13 07:36:50,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:36:50,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:36:50,484 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i[950,963] [2021-06-13 07:36:50,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:36:50,629 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:36:50,638 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i[950,963] [2021-06-13 07:36:50,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:36:50,699 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:36:50,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50 WrapperNode [2021-06-13 07:36:50,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:36:50,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:36:50,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:36:50,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:36:50,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:36:50,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:36:50,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:36:50,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:36:50,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (1/1) ... [2021-06-13 07:36:50,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:36:50,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:36:50,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:36:50,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:36:50,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (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 [2021-06-13 07:36:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:36:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:36:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:36:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:36:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:36:50,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:36:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:36:50,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:36:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:36:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:36:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:36:50,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:36:50,846 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:36:51,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:36:51,161 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:36:51,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:36:51 BoogieIcfgContainer [2021-06-13 07:36:51,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:36:51,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:36:51,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:36:51,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:36:51,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:36:50" (1/3) ... [2021-06-13 07:36:51,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b31bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:36:51, skipping insertion in model container [2021-06-13 07:36:51,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:50" (2/3) ... [2021-06-13 07:36:51,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b31bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:36:51, skipping insertion in model container [2021-06-13 07:36:51,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:36:51" (3/3) ... [2021-06-13 07:36:51,168 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_pso.oepc.i [2021-06-13 07:36:51,173 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:36:51,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:36:51,173 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:36:51,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,200 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,200 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,200 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:51,210 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:36:51,226 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 07:36:51,249 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:36:51,249 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:36:51,249 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:36:51,250 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:36:51,250 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:36:51,250 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:36:51,250 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:36:51,250 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:36:51,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-06-13 07:36:51,298 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-06-13 07:36:51,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:36:51,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-06-13 07:36:51,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2021-06-13 07:36:51,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2021-06-13 07:36:51,321 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2021-06-13 07:36:51,321 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:36:51,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:51,322 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:51,322 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:51,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1835842458, now seen corresponding path program 1 times [2021-06-13 07:36:51,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:51,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652413274] [2021-06-13 07:36:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:51,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:51,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:51,560 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:36:51,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:36:51,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:36:51,593 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:36:51,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:51,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:51,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:51,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652413274] [2021-06-13 07:36:51,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652413274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:51,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:51,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:36:51,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296065112] [2021-06-13 07:36:51,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:36:51,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:36:51,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:36:51,626 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2021-06-13 07:36:51,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:51,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:51,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2021-06-13 07:36:51,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:51,811 INFO L129 PetriNetUnfolder]: 30/141 cut-off events. [2021-06-13 07:36:51,811 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:36:51,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 141 events. 30/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 495 event pairs, 0 based on Foata normal form. 7/144 useless extension candidates. Maximal degree in co-relation 193. Up to 26 conditions per place. [2021-06-13 07:36:51,813 INFO L132 encePairwiseOnDemand]: 57/67 looper letters, 8 selfloop transitions, 5 changer transitions 20/77 dead transitions. [2021-06-13 07:36:51,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 226 flow [2021-06-13 07:36:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:36:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:36:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 578 transitions. [2021-06-13 07:36:51,829 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8626865671641791 [2021-06-13 07:36:51,833 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 578 transitions. [2021-06-13 07:36:51,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 578 transitions. [2021-06-13 07:36:51,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:51,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 578 transitions. [2021-06-13 07:36:51,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.8) internal successors, (578), 10 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:51,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:51,850 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:51,852 INFO L185 Difference]: Start difference. First operand has 61 places, 55 transitions, 116 flow. Second operand 10 states and 578 transitions. [2021-06-13 07:36:51,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 226 flow [2021-06-13 07:36:51,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:36:51,857 INFO L241 Difference]: Finished difference. Result has 74 places, 55 transitions, 154 flow [2021-06-13 07:36:51,858 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2021-06-13 07:36:51,859 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2021-06-13 07:36:51,859 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 154 flow [2021-06-13 07:36:51,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:51,859 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:51,859 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:51,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:36:51,859 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:51,860 INFO L82 PathProgramCache]: Analyzing trace with hash -150590180, now seen corresponding path program 1 times [2021-06-13 07:36:51,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:51,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139747073] [2021-06-13 07:36:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:51,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:51,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:51,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:51,950 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:36:51,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:36:51,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:36:51,985 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:36:51,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:51,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:51,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:51,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:51,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139747073] [2021-06-13 07:36:51,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139747073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:51,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:51,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:36:51,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139208368] [2021-06-13 07:36:51,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:36:51,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:51,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:36:51,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:36:51,998 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2021-06-13 07:36:51,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:51,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:51,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2021-06-13 07:36:51,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:52,122 INFO L129 PetriNetUnfolder]: 8/78 cut-off events. [2021-06-13 07:36:52,123 INFO L130 PetriNetUnfolder]: For 69/72 co-relation queries the response was YES. [2021-06-13 07:36:52,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 78 events. 8/78 cut-off events. For 69/72 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 110 event pairs, 0 based on Foata normal form. 6/84 useless extension candidates. Maximal degree in co-relation 162. Up to 17 conditions per place. [2021-06-13 07:36:52,124 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 4 selfloop transitions, 7 changer transitions 11/66 dead transitions. [2021-06-13 07:36:52,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 263 flow [2021-06-13 07:36:52,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:36:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:36:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 564 transitions. [2021-06-13 07:36:52,127 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8417910447761194 [2021-06-13 07:36:52,127 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 564 transitions. [2021-06-13 07:36:52,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 564 transitions. [2021-06-13 07:36:52,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:52,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 564 transitions. [2021-06-13 07:36:52,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.4) internal successors, (564), 10 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,132 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,132 INFO L185 Difference]: Start difference. First operand has 74 places, 55 transitions, 154 flow. Second operand 10 states and 564 transitions. [2021-06-13 07:36:52,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 263 flow [2021-06-13 07:36:52,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 228 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-06-13 07:36:52,135 INFO L241 Difference]: Finished difference. Result has 78 places, 55 transitions, 170 flow [2021-06-13 07:36:52,135 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=170, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2021-06-13 07:36:52,135 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2021-06-13 07:36:52,135 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 170 flow [2021-06-13 07:36:52,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,136 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:52,136 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:52,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:36:52,136 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:52,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1253858726, now seen corresponding path program 1 times [2021-06-13 07:36:52,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:52,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121245369] [2021-06-13 07:36:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:52,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:52,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:52,186 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-13 07:36:52,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:52,191 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:36:52,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:36:52,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:52,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:52,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:52,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:52,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121245369] [2021-06-13 07:36:52,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121245369] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:52,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:52,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:36:52,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290652901] [2021-06-13 07:36:52,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:36:52,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:52,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:36:52,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:36:52,223 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-06-13 07:36:52,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:52,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-06-13 07:36:52,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:52,332 INFO L129 PetriNetUnfolder]: 3/84 cut-off events. [2021-06-13 07:36:52,332 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-06-13 07:36:52,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 84 events. 3/84 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 0 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 138. Up to 12 conditions per place. [2021-06-13 07:36:52,336 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 11 selfloop transitions, 3 changer transitions 4/61 dead transitions. [2021-06-13 07:36:52,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 61 transitions, 218 flow [2021-06-13 07:36:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:36:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:36:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 376 transitions. [2021-06-13 07:36:52,339 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8017057569296375 [2021-06-13 07:36:52,340 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 376 transitions. [2021-06-13 07:36:52,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 376 transitions. [2021-06-13 07:36:52,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:52,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 376 transitions. [2021-06-13 07:36:52,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 53.714285714285715) internal successors, (376), 7 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,347 INFO L185 Difference]: Start difference. First operand has 78 places, 55 transitions, 170 flow. Second operand 7 states and 376 transitions. [2021-06-13 07:36:52,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 61 transitions, 218 flow [2021-06-13 07:36:52,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 61 transitions, 172 flow, removed 13 selfloop flow, removed 13 redundant places. [2021-06-13 07:36:52,355 INFO L241 Difference]: Finished difference. Result has 72 places, 57 transitions, 151 flow [2021-06-13 07:36:52,356 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=151, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2021-06-13 07:36:52,356 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 11 predicate places. [2021-06-13 07:36:52,356 INFO L482 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 151 flow [2021-06-13 07:36:52,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,356 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:52,356 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:52,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:36:52,357 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2067449690, now seen corresponding path program 2 times [2021-06-13 07:36:52,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:52,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072888560] [2021-06-13 07:36:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:52,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:52,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:52,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:52,403 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:36:52,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:36:52,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:52,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:52,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:52,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:52,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:52,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072888560] [2021-06-13 07:36:52,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072888560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:52,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:52,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:36:52,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009704078] [2021-06-13 07:36:52,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:36:52,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:52,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:36:52,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:36:52,443 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-06-13 07:36:52,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 54.42857142857143) internal successors, (381), 7 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:52,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-06-13 07:36:52,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:52,517 INFO L129 PetriNetUnfolder]: 4/96 cut-off events. [2021-06-13 07:36:52,517 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-06-13 07:36:52,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 96 events. 4/96 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 217 event pairs, 0 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 144. Up to 7 conditions per place. [2021-06-13 07:36:52,518 INFO L132 encePairwiseOnDemand]: 61/67 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2021-06-13 07:36:52,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 56 transitions, 171 flow [2021-06-13 07:36:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:36:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:36:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 382 transitions. [2021-06-13 07:36:52,519 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.814498933901919 [2021-06-13 07:36:52,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 382 transitions. [2021-06-13 07:36:52,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 382 transitions. [2021-06-13 07:36:52,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:52,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 382 transitions. [2021-06-13 07:36:52,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,521 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,521 INFO L185 Difference]: Start difference. First operand has 72 places, 57 transitions, 151 flow. Second operand 7 states and 382 transitions. [2021-06-13 07:36:52,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 56 transitions, 171 flow [2021-06-13 07:36:52,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 56 transitions, 166 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-06-13 07:36:52,523 INFO L241 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2021-06-13 07:36:52,523 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2021-06-13 07:36:52,523 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2021-06-13 07:36:52,523 INFO L482 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2021-06-13 07:36:52,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.42857142857143) internal successors, (381), 7 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:36:52,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:36:52,525 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:36:52,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:36:52 BasicIcfg [2021-06-13 07:36:52,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:36:52,528 INFO L168 Benchmark]: Toolchain (without parser) took 2223.53 ms. Allocated memory was 218.1 MB in the beginning and 285.2 MB in the end (delta: 67.1 MB). Free memory was 181.4 MB in the beginning and 217.5 MB in the end (delta: -36.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:52,528 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 218.1 MB. Free memory is still 199.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:36:52,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.48 ms. Allocated memory is still 218.1 MB. Free memory was 181.2 MB in the beginning and 180.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:52,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.28 ms. Allocated memory is still 218.1 MB. Free memory was 180.0 MB in the beginning and 178.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:52,529 INFO L168 Benchmark]: Boogie Preprocessor took 26.83 ms. Allocated memory is still 218.1 MB. Free memory was 178.3 MB in the beginning and 176.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:52,530 INFO L168 Benchmark]: RCFGBuilder took 388.66 ms. Allocated memory is still 218.1 MB. Free memory was 176.8 MB in the beginning and 156.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:52,530 INFO L168 Benchmark]: TraceAbstraction took 1363.47 ms. Allocated memory was 218.1 MB in the beginning and 285.2 MB in the end (delta: 67.1 MB). Free memory was 155.9 MB in the beginning and 217.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:52,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 218.1 MB. Free memory is still 199.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.48 ms. Allocated memory is still 218.1 MB. Free memory was 181.2 MB in the beginning and 180.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.28 ms. Allocated memory is still 218.1 MB. Free memory was 180.0 MB in the beginning and 178.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.83 ms. Allocated memory is still 218.1 MB. Free memory was 178.3 MB in the beginning and 176.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 388.66 ms. Allocated memory is still 218.1 MB. Free memory was 176.8 MB in the beginning and 156.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1363.47 ms. Allocated memory was 218.1 MB in the beginning and 285.2 MB in the end (delta: 67.1 MB). Free memory was 155.9 MB in the beginning and 217.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1279.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 591.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 60.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 65 SDslu, 94 SDs, 0 SdLazy, 122 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 379.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=2, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.3ms SsaConstructionTime, 91.5ms SatisfiabilityAnalysisTime, 414.6ms InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 528 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...