/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 09:44:25,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 09:44:25,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 09:44:25,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 09:44:25,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 09:44:25,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 09:44:25,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 09:44:25,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 09:44:25,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 09:44:25,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 09:44:25,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 09:44:25,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 09:44:25,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 09:44:25,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 09:44:25,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 09:44:25,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 09:44:25,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 09:44:25,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 09:44:25,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 09:44:25,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 09:44:25,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 09:44:25,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 09:44:25,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 09:44:25,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 09:44:25,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 09:44:25,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 09:44:25,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 09:44:25,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 09:44:25,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 09:44:25,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 09:44:25,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 09:44:25,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 09:44:25,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 09:44:25,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 09:44:25,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 09:44:25,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 09:44:25,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 09:44:25,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 09:44:25,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 09:44:25,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 09:44:25,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 09:44:25,422 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-VariableLbe.epf [2021-03-24 09:44:25,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 09:44:25,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 09:44:25,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 09:44:25,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 09:44:25,467 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 09:44:25,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 09:44:25,468 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 09:44:25,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 09:44:25,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 09:44:25,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 09:44:25,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 09:44:25,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 09:44:25,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 09:44:25,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 09:44:25,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 09:44:25,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 09:44:25,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 09:44:25,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 09:44:25,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 09:44:25,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 09:44:25,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 09:44:25,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 09:44:25,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 09:44:25,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 09:44:25,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 09:44:25,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 09:44:25,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 09:44:25,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 09:44:25,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 09:44:25,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 09:44:25,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 09:44:25,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 09:44:25,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 09:44:25,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 09:44:25,774 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 09:44:25,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-24 09:44:25,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/338a1f87f/cd9e0f0b728f4ae8848e0c089eab4d89/FLAG5d40a42f8 [2021-03-24 09:44:26,330 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 09:44:26,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-24 09:44:26,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/338a1f87f/cd9e0f0b728f4ae8848e0c089eab4d89/FLAG5d40a42f8 [2021-03-24 09:44:26,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/338a1f87f/cd9e0f0b728f4ae8848e0c089eab4d89 [2021-03-24 09:44:26,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 09:44:26,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 09:44:26,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 09:44:26,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 09:44:26,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 09:44:26,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 09:44:26" (1/1) ... [2021-03-24 09:44:26,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3618f465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:26, skipping insertion in model container [2021-03-24 09:44:26,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 09:44:26" (1/1) ... [2021-03-24 09:44:26,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 09:44:26,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 09:44:27,076 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 09:44:27,247 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-03-24 09:44:27,254 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-03-24 09:44:27,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 09:44:27,267 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 09:44:27,288 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 09:44:27,309 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-03-24 09:44:27,313 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-03-24 09:44:27,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 09:44:27,391 INFO L208 MainTranslator]: Completed translation [2021-03-24 09:44:27,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27 WrapperNode [2021-03-24 09:44:27,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 09:44:27,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 09:44:27,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 09:44:27,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 09:44:27,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 09:44:27,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 09:44:27,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 09:44:27,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 09:44:27,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (1/1) ... [2021-03-24 09:44:27,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 09:44:27,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 09:44:27,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 09:44:27,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 09:44:27,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (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 [2021-03-24 09:44:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 09:44:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-24 09:44:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-24 09:44:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-24 09:44:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-24 09:44:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 09:44:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 09:44:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 09:44:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 09:44:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 09:44:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 09:44:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 09:44:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 09:44:27,556 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 09:44:27,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 09:44:27,836 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 09:44:27,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 09:44:27 BoogieIcfgContainer [2021-03-24 09:44:27,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 09:44:27,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 09:44:27,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 09:44:27,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 09:44:27,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 09:44:26" (1/3) ... [2021-03-24 09:44:27,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d554411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 09:44:27, skipping insertion in model container [2021-03-24 09:44:27,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:44:27" (2/3) ... [2021-03-24 09:44:27,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d554411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 09:44:27, skipping insertion in model container [2021-03-24 09:44:27,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 09:44:27" (3/3) ... [2021-03-24 09:44:27,843 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-03-24 09:44:27,853 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 09:44:27,857 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 09:44:27,857 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 09:44:27,889 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,890 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,890 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,890 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,890 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,890 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,890 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,890 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,891 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,891 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,891 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,891 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,894 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,894 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,894 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,894 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,896 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,911 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,912 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,912 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,917 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,917 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:44:27,925 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-24 09:44:27,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 09:44:27,955 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 09:44:27,956 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 09:44:27,956 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 09:44:27,956 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 09:44:27,956 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 09:44:27,956 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 09:44:27,956 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 09:44:27,956 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 09:44:27,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 96 transitions, 214 flow [2021-03-24 09:44:28,000 INFO L129 PetriNetUnfolder]: 14/96 cut-off events. [2021-03-24 09:44:28,000 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 09:44:28,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 14/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-24 09:44:28,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 96 transitions, 214 flow [2021-03-24 09:44:28,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 84 transitions, 180 flow [2021-03-24 09:44:28,019 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 09:44:28,026 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 84 transitions, 180 flow [2021-03-24 09:44:28,029 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 84 transitions, 180 flow [2021-03-24 09:44:28,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 84 transitions, 180 flow [2021-03-24 09:44:28,046 INFO L129 PetriNetUnfolder]: 13/86 cut-off events. [2021-03-24 09:44:28,046 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 09:44:28,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 13/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-03-24 09:44:28,049 INFO L142 LiptonReduction]: Number of co-enabled transitions 2028 [2021-03-24 09:44:29,378 INFO L154 LiptonReduction]: Checked pairs total: 1764 [2021-03-24 09:44:29,378 INFO L156 LiptonReduction]: Total number of compositions: 50 [2021-03-24 09:44:29,381 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1363 [2021-03-24 09:44:29,392 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-24 09:44:29,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 09:44:29,393 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:44:29,393 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:44:29,393 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:44:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:44:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash 730136845, now seen corresponding path program 1 times [2021-03-24 09:44:29,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:44:29,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622957179] [2021-03-24 09:44:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:44:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:44:29,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:44:29,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:44:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:44:29,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622957179] [2021-03-24 09:44:29,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:44:29,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 09:44:29,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810626278] [2021-03-24 09:44:29,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-24 09:44:29,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:44:29,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-24 09:44:29,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-24 09:44:29,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 146 [2021-03-24 09:44:29,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 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) [2021-03-24 09:44:29,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:44:29,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 146 [2021-03-24 09:44:29,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:44:29,543 INFO L129 PetriNetUnfolder]: 6/44 cut-off events. [2021-03-24 09:44:29,543 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 09:44:29,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 6/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 50. Up to 3 conditions per place. [2021-03-24 09:44:29,544 INFO L132 encePairwiseOnDemand]: 144/146 looper letters, 0 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2021-03-24 09:44:29,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 98 flow [2021-03-24 09:44:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-24 09:44:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-24 09:44:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 262 transitions. [2021-03-24 09:44:29,554 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8972602739726028 [2021-03-24 09:44:29,554 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 262 transitions. [2021-03-24 09:44:29,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 262 transitions. [2021-03-24 09:44:29,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:44:29,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 262 transitions. [2021-03-24 09:44:29,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 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) [2021-03-24 09:44:29,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2021-03-24 09:44:29,564 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2021-03-24 09:44:29,565 INFO L185 Difference]: Start difference. First operand has 44 places, 46 transitions, 104 flow. Second operand 2 states and 262 transitions. [2021-03-24 09:44:29,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 98 flow [2021-03-24 09:44:29,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 90 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 09:44:29,569 INFO L241 Difference]: Finished difference. Result has 40 places, 43 transitions, 90 flow [2021-03-24 09:44:29,570 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2021-03-24 09:44:29,571 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2021-03-24 09:44:29,571 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 90 flow [2021-03-24 09:44:29,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 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) [2021-03-24 09:44:29,571 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:44:29,571 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:44:29,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 09:44:29,572 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:44:29,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:44:29,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1589419032, now seen corresponding path program 1 times [2021-03-24 09:44:29,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:44:29,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263443982] [2021-03-24 09:44:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:44:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:44:29,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:44:29,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 09:44:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:44:29,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263443982] [2021-03-24 09:44:29,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:44:29,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 09:44:29,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002785229] [2021-03-24 09:44:29,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 09:44:29,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:44:29,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 09:44:29,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 09:44:29,629 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 146 [2021-03-24 09:44:29,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2021-03-24 09:44:29,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:44:29,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 146 [2021-03-24 09:44:29,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:44:29,657 INFO L129 PetriNetUnfolder]: 15/89 cut-off events. [2021-03-24 09:44:29,657 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 09:44:29,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 89 events. 15/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 323 event pairs, 4 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 124. Up to 23 conditions per place. [2021-03-24 09:44:29,658 INFO L132 encePairwiseOnDemand]: 140/146 looper letters, 8 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2021-03-24 09:44:29,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 118 flow [2021-03-24 09:44:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 09:44:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 09:44:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2021-03-24 09:44:29,663 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7990867579908676 [2021-03-24 09:44:29,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2021-03-24 09:44:29,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2021-03-24 09:44:29,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:44:29,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2021-03-24 09:44:29,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2021-03-24 09:44:29,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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) [2021-03-24 09:44:29,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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) [2021-03-24 09:44:29,667 INFO L185 Difference]: Start difference. First operand has 40 places, 43 transitions, 90 flow. Second operand 3 states and 350 transitions. [2021-03-24 09:44:29,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 118 flow [2021-03-24 09:44:29,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 09:44:29,669 INFO L241 Difference]: Finished difference. Result has 44 places, 44 transitions, 112 flow [2021-03-24 09:44:29,669 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2021-03-24 09:44:29,669 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2021-03-24 09:44:29,670 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 112 flow [2021-03-24 09:44:29,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2021-03-24 09:44:29,670 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:44:29,670 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:44:29,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 09:44:29,670 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:44:29,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:44:29,671 INFO L82 PathProgramCache]: Analyzing trace with hash 970670908, now seen corresponding path program 1 times [2021-03-24 09:44:29,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:44:29,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218339834] [2021-03-24 09:44:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:44:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:44:29,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:44:29,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 09:44:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:44:29,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218339834] [2021-03-24 09:44:29,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:44:29,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 09:44:29,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646506171] [2021-03-24 09:44:29,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 09:44:29,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:44:29,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 09:44:29,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 09:44:29,709 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 146 [2021-03-24 09:44:29,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2021-03-24 09:44:29,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:44:29,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 146 [2021-03-24 09:44:29,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:44:29,730 INFO L129 PetriNetUnfolder]: 9/74 cut-off events. [2021-03-24 09:44:29,730 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2021-03-24 09:44:29,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 74 events. 9/74 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 255 event pairs, 3 based on Foata normal form. 7/74 useless extension candidates. Maximal degree in co-relation 120. Up to 13 conditions per place. [2021-03-24 09:44:29,731 INFO L132 encePairwiseOnDemand]: 142/146 looper letters, 6 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2021-03-24 09:44:29,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 130 flow [2021-03-24 09:44:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 09:44:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 09:44:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-03-24 09:44:29,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7922374429223744 [2021-03-24 09:44:29,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-03-24 09:44:29,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-03-24 09:44:29,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:44:29,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-03-24 09:44:29,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2021-03-24 09:44:29,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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) [2021-03-24 09:44:29,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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) [2021-03-24 09:44:29,737 INFO L185 Difference]: Start difference. First operand has 44 places, 44 transitions, 112 flow. Second operand 3 states and 347 transitions. [2021-03-24 09:44:29,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 130 flow [2021-03-24 09:44:29,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 09:44:29,739 INFO L241 Difference]: Finished difference. Result has 45 places, 43 transitions, 112 flow [2021-03-24 09:44:29,739 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2021-03-24 09:44:29,739 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2021-03-24 09:44:29,739 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 112 flow [2021-03-24 09:44:29,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2021-03-24 09:44:29,739 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:44:29,740 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:44:29,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 09:44:29,740 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:44:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:44:29,740 INFO L82 PathProgramCache]: Analyzing trace with hash 942505704, now seen corresponding path program 1 times [2021-03-24 09:44:29,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:44:29,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589674109] [2021-03-24 09:44:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:44:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:44:29,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:44:29,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 09:44:29,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 09:44:29,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:44:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:44:29,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589674109] [2021-03-24 09:44:29,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:44:29,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 09:44:29,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789933440] [2021-03-24 09:44:29,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 09:44:29,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:44:29,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 09:44:29,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 09:44:29,786 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 146 [2021-03-24 09:44:29,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2021-03-24 09:44:29,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:44:29,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 146 [2021-03-24 09:44:29,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:44:29,839 INFO L129 PetriNetUnfolder]: 58/202 cut-off events. [2021-03-24 09:44:29,839 INFO L130 PetriNetUnfolder]: For 67/68 co-relation queries the response was YES. [2021-03-24 09:44:29,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 202 events. 58/202 cut-off events. For 67/68 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 957 event pairs, 9 based on Foata normal form. 6/199 useless extension candidates. Maximal degree in co-relation 323. Up to 36 conditions per place. [2021-03-24 09:44:29,841 INFO L132 encePairwiseOnDemand]: 138/146 looper letters, 14 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2021-03-24 09:44:29,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 200 flow [2021-03-24 09:44:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 09:44:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 09:44:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 573 transitions. [2021-03-24 09:44:29,843 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7849315068493151 [2021-03-24 09:44:29,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 573 transitions. [2021-03-24 09:44:29,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 573 transitions. [2021-03-24 09:44:29,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:44:29,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 573 transitions. [2021-03-24 09:44:29,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 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) [2021-03-24 09:44:29,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2021-03-24 09:44:29,848 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2021-03-24 09:44:29,848 INFO L185 Difference]: Start difference. First operand has 45 places, 43 transitions, 112 flow. Second operand 5 states and 573 transitions. [2021-03-24 09:44:29,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 200 flow [2021-03-24 09:44:29,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 09:44:29,850 INFO L241 Difference]: Finished difference. Result has 50 places, 51 transitions, 182 flow [2021-03-24 09:44:29,850 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2021-03-24 09:44:29,851 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2021-03-24 09:44:29,851 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 182 flow [2021-03-24 09:44:29,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2021-03-24 09:44:29,851 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:44:29,851 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:44:29,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 09:44:29,851 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:44:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:44:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash -771355698, now seen corresponding path program 2 times [2021-03-24 09:44:29,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:44:29,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839493639] [2021-03-24 09:44:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:44:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:44:29,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:44:29,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 09:44:29,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 09:44:29,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:44:29,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:44:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:44:29,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839493639] [2021-03-24 09:44:29,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:44:29,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 09:44:29,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160880830] [2021-03-24 09:44:29,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 09:44:29,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:44:29,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 09:44:29,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 09:44:29,890 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 146 [2021-03-24 09:44:29,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2021-03-24 09:44:29,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:44:29,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 146 [2021-03-24 09:44:29,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:44:29,961 INFO L129 PetriNetUnfolder]: 106/273 cut-off events. [2021-03-24 09:44:29,963 INFO L130 PetriNetUnfolder]: For 87/91 co-relation queries the response was YES. [2021-03-24 09:44:29,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 273 events. 106/273 cut-off events. For 87/91 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1257 event pairs, 7 based on Foata normal form. 10/280 useless extension candidates. Maximal degree in co-relation 532. Up to 49 conditions per place. [2021-03-24 09:44:29,966 INFO L132 encePairwiseOnDemand]: 138/146 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2021-03-24 09:44:29,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 256 flow [2021-03-24 09:44:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 09:44:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 09:44:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2021-03-24 09:44:29,974 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7698630136986301 [2021-03-24 09:44:29,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2021-03-24 09:44:29,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2021-03-24 09:44:29,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:44:29,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2021-03-24 09:44:29,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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) [2021-03-24 09:44:29,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2021-03-24 09:44:29,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2021-03-24 09:44:29,979 INFO L185 Difference]: Start difference. First operand has 50 places, 51 transitions, 182 flow. Second operand 5 states and 562 transitions. [2021-03-24 09:44:29,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 256 flow [2021-03-24 09:44:29,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 252 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-03-24 09:44:29,984 INFO L241 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2021-03-24 09:44:29,984 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2021-03-24 09:44:29,984 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2021-03-24 09:44:29,984 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2021-03-24 09:44:29,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2021-03-24 09:44:29,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 09:44:29,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 09:44:29 BasicIcfg [2021-03-24 09:44:29,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 09:44:29,993 INFO L168 Benchmark]: Toolchain (without parser) took 3136.43 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 235.0 MB in the beginning and 210.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 129.9 MB. Max. memory is 16.0 GB. [2021-03-24 09:44:29,994 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 09:44:29,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.26 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 235.0 MB in the beginning and 326.1 MB in the end (delta: -91.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 09:44:29,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 362.8 MB. Free memory was 326.1 MB in the beginning and 324.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 09:44:29,996 INFO L168 Benchmark]: Boogie Preprocessor took 33.41 ms. Allocated memory is still 362.8 MB. Free memory was 324.1 MB in the beginning and 322.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 09:44:29,996 INFO L168 Benchmark]: RCFGBuilder took 359.24 ms. Allocated memory is still 362.8 MB. Free memory was 322.7 MB in the beginning and 299.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 09:44:29,999 INFO L168 Benchmark]: TraceAbstraction took 2149.08 ms. Allocated memory is still 362.8 MB. Free memory was 299.0 MB in the beginning and 210.5 MB in the end (delta: 88.4 MB). Peak memory consumption was 89.8 MB. Max. memory is 16.0 GB. [2021-03-24 09:44:30,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 539.26 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 235.0 MB in the beginning and 326.1 MB in the end (delta: -91.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 362.8 MB. Free memory was 326.1 MB in the beginning and 324.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.41 ms. Allocated memory is still 362.8 MB. Free memory was 324.1 MB in the beginning and 322.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 359.24 ms. Allocated memory is still 362.8 MB. Free memory was 322.7 MB in the beginning and 299.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2149.08 ms. Allocated memory is still 362.8 MB. Free memory was 299.0 MB in the beginning and 210.5 MB in the end (delta: 88.4 MB). Peak memory consumption was 89.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1349.8ms, 77 PlacesBefore, 44 PlacesAfterwards, 84 TransitionsBefore, 46 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 50 TotalNumberOfCompositions, 1764 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1297, positive: 1260, positive conditional: 0, positive unconditional: 1260, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 848, positive: 831, positive conditional: 0, positive unconditional: 831, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 848, positive: 831, positive conditional: 0, positive unconditional: 831, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1297, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 848, unknown conditional: 0, unknown unconditional: 848] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: 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 CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2033.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 276.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1428.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 25 SDslu, 16 SDs, 0 SdLazy, 71 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=4, InterpolantAutomatonStates: 18, 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: 9.7ms SsaConstructionTime, 51.8ms SatisfiabilityAnalysisTime, 137.8ms InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 83 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...