/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 11:14:39,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 11:14:39,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 11:14:39,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 11:14:39,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 11:14:39,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 11:14:39,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 11:14:39,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 11:14:39,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 11:14:39,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 11:14:39,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 11:14:39,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 11:14:39,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 11:14:39,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 11:14:39,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 11:14:39,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 11:14:39,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 11:14:39,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 11:14:39,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 11:14:39,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 11:14:39,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 11:14:39,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 11:14:39,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 11:14:39,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 11:14:39,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 11:14:39,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 11:14:39,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 11:14:39,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 11:14:39,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 11:14:39,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 11:14:39,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 11:14:39,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 11:14:39,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 11:14:39,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 11:14:39,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 11:14:39,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 11:14:39,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 11:14:39,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 11:14:39,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 11:14:39,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 11:14:39,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 11:14:39,889 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 [2021-06-10 11:14:39,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 11:14:39,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 11:14:39,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 11:14:39,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 11:14:39,924 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 11:14:39,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 11:14:39,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 11:14:39,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 11:14:39,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 11:14:39,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 11:14:39,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 11:14:39,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 11:14:39,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 11:14:39,926 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 11:14:39,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 11:14:39,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 11:14:39,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 11:14:39,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 11:14:39,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 11:14:39,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 11:14:39,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 11:14:39,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 11:14:39,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 11:14:39,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 11:14:39,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 11:14:39,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 11:14:39,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 11:14:39,929 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 11:14:39,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 11:14:39,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 11:14:40,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 11:14:40,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 11:14:40,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 11:14:40,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 11:14:40,276 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 11:14:40,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-06-10 11:14:40,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7ec0df5/04e6be8c3082412c9e4f1481a3d724be/FLAGfddb13498 [2021-06-10 11:14:40,792 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 11:14:40,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-06-10 11:14:40,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7ec0df5/04e6be8c3082412c9e4f1481a3d724be/FLAGfddb13498 [2021-06-10 11:14:41,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7ec0df5/04e6be8c3082412c9e4f1481a3d724be [2021-06-10 11:14:41,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 11:14:41,307 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 11:14:41,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 11:14:41,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 11:14:41,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 11:14:41,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54500e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41, skipping insertion in model container [2021-06-10 11:14:41,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 11:14:41,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 11:14:41,498 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-10 11:14:41,673 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/szymanski.i[31505,31518] [2021-06-10 11:14:41,682 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/szymanski.i[32915,32928] [2021-06-10 11:14:41,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:14:41,697 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 11:14:41,720 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-10 11:14:41,742 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/szymanski.i[31505,31518] [2021-06-10 11:14:41,754 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/szymanski.i[32915,32928] [2021-06-10 11:14:41,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:14:41,828 INFO L208 MainTranslator]: Completed translation [2021-06-10 11:14:41,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41 WrapperNode [2021-06-10 11:14:41,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 11:14:41,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 11:14:41,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 11:14:41,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 11:14:41,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 11:14:41,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 11:14:41,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 11:14:41,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 11:14:41,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (1/1) ... [2021-06-10 11:14:41,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 11:14:41,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 11:14:41,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 11:14:41,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 11:14:41,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (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 [2021-06-10 11:14:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-10 11:14:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-06-10 11:14:41,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-06-10 11:14:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-10 11:14:41,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-10 11:14:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 11:14:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 11:14:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 11:14:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 11:14:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 11:14:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 11:14:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 11:14:41,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 11:14:41,994 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 11:14:42,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 11:14:42,340 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-06-10 11:14:42,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:14:42 BoogieIcfgContainer [2021-06-10 11:14:42,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 11:14:42,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 11:14:42,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 11:14:42,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 11:14:42,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:14:41" (1/3) ... [2021-06-10 11:14:42,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a467a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:14:42, skipping insertion in model container [2021-06-10 11:14:42,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:41" (2/3) ... [2021-06-10 11:14:42,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a467a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:14:42, skipping insertion in model container [2021-06-10 11:14:42,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:14:42" (3/3) ... [2021-06-10 11:14:42,348 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-06-10 11:14:42,353 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 11:14:42,357 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-10 11:14:42,357 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 11:14:42,380 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,381 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,381 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,381 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,381 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,381 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,381 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,381 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,382 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,382 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,382 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,382 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,383 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,383 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,383 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,383 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,383 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,383 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,406 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,406 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:42,420 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-10 11:14:42,436 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-10 11:14:42,453 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 11:14:42,453 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 11:14:42,453 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 11:14:42,453 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 11:14:42,453 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 11:14:42,454 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 11:14:42,454 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 11:14:42,454 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 11:14:42,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 109 transitions, 240 flow [2021-06-10 11:14:42,501 INFO L129 PetriNetUnfolder]: 21/109 cut-off events. [2021-06-10 11:14:42,502 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 11:14:42,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 109 events. 21/109 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-06-10 11:14:42,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 109 transitions, 240 flow [2021-06-10 11:14:42,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 97 transitions, 206 flow [2021-06-10 11:14:42,529 INFO L129 PetriNetUnfolder]: 16/73 cut-off events. [2021-06-10 11:14:42,529 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:14:42,529 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:42,530 INFO L263 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] [2021-06-10 11:14:42,530 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash 598651841, now seen corresponding path program 1 times [2021-06-10 11:14:42,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:42,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18370612] [2021-06-10 11:14:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:42,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:42,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:42,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:42,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:42,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18370612] [2021-06-10 11:14:42,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:42,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 11:14:42,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177693394] [2021-06-10 11:14:42,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 11:14:42,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:42,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 11:14:42,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 11:14:42,735 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 109 [2021-06-10 11:14:42,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 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) [2021-06-10 11:14:42,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:42,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 109 [2021-06-10 11:14:42,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:42,780 INFO L129 PetriNetUnfolder]: 10/89 cut-off events. [2021-06-10 11:14:42,781 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 11:14:42,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 10/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 0 based on Foata normal form. 10/87 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-06-10 11:14:42,786 INFO L132 encePairwiseOnDemand]: 99/109 looper letters, 0 selfloop transitions, 0 changer transitions 0/87 dead transitions. [2021-06-10 11:14:42,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 186 flow [2021-06-10 11:14:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 11:14:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 11:14:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2021-06-10 11:14:42,797 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9541284403669725 [2021-06-10 11:14:42,798 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2021-06-10 11:14:42,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2021-06-10 11:14:42,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:42,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2021-06-10 11:14:42,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 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) [2021-06-10 11:14:42,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2021-06-10 11:14:42,814 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2021-06-10 11:14:42,816 INFO L185 Difference]: Start difference. First operand has 83 places, 97 transitions, 206 flow. Second operand 2 states and 208 transitions. [2021-06-10 11:14:42,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 186 flow [2021-06-10 11:14:42,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 11:14:42,829 INFO L241 Difference]: Finished difference. Result has 80 places, 87 transitions, 178 flow [2021-06-10 11:14:42,831 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2021-06-10 11:14:42,831 INFO L343 CegarLoopForPetriNet]: 83 programPoint places, -3 predicate places. [2021-06-10 11:14:42,831 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 178 flow [2021-06-10 11:14:42,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 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) [2021-06-10 11:14:42,832 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:42,832 INFO L263 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] [2021-06-10 11:14:42,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 11:14:42,832 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:42,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:42,833 INFO L82 PathProgramCache]: Analyzing trace with hash 402168127, now seen corresponding path program 1 times [2021-06-10 11:14:42,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:42,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301629789] [2021-06-10 11:14:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:42,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:42,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:42,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:42,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:42,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:42,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:42,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301629789] [2021-06-10 11:14:42,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:42,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:14:42,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654769987] [2021-06-10 11:14:42,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:14:42,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:42,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:14:42,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:14:42,936 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 109 [2021-06-10 11:14:42,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2021-06-10 11:14:42,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:42,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 109 [2021-06-10 11:14:42,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:42,995 INFO L129 PetriNetUnfolder]: 22/164 cut-off events. [2021-06-10 11:14:42,996 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:14:42,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 164 events. 22/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 505 event pairs, 2 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 194. Up to 18 conditions per place. [2021-06-10 11:14:42,998 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 7 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2021-06-10 11:14:42,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 204 flow [2021-06-10 11:14:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:14:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:14:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2021-06-10 11:14:43,000 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8807339449541285 [2021-06-10 11:14:43,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2021-06-10 11:14:43,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2021-06-10 11:14:43,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:43,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2021-06-10 11:14:43,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2021-06-10 11:14:43,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-06-10 11:14:43,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-06-10 11:14:43,005 INFO L185 Difference]: Start difference. First operand has 80 places, 87 transitions, 178 flow. Second operand 3 states and 288 transitions. [2021-06-10 11:14:43,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 204 flow [2021-06-10 11:14:43,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 11:14:43,008 INFO L241 Difference]: Finished difference. Result has 84 places, 88 transitions, 198 flow [2021-06-10 11:14:43,008 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2021-06-10 11:14:43,008 INFO L343 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2021-06-10 11:14:43,009 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 198 flow [2021-06-10 11:14:43,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2021-06-10 11:14:43,009 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:43,009 INFO L263 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] [2021-06-10 11:14:43,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 11:14:43,010 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash -620066576, now seen corresponding path program 1 times [2021-06-10 11:14:43,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:43,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042467524] [2021-06-10 11:14:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:43,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:43,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 11:14:43,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:43,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042467524] [2021-06-10 11:14:43,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:43,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:14:43,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145550093] [2021-06-10 11:14:43,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:14:43,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:43,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:14:43,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:14:43,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 109 [2021-06-10 11:14:43,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2021-06-10 11:14:43,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:43,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 109 [2021-06-10 11:14:43,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:43,095 INFO L129 PetriNetUnfolder]: 16/143 cut-off events. [2021-06-10 11:14:43,095 INFO L130 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2021-06-10 11:14:43,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 143 events. 16/143 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 380 event pairs, 2 based on Foata normal form. 6/133 useless extension candidates. Maximal degree in co-relation 183. Up to 11 conditions per place. [2021-06-10 11:14:43,097 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 6 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2021-06-10 11:14:43,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 214 flow [2021-06-10 11:14:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:14:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:14:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2021-06-10 11:14:43,100 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8746177370030581 [2021-06-10 11:14:43,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2021-06-10 11:14:43,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2021-06-10 11:14:43,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:43,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2021-06-10 11:14:43,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2021-06-10 11:14:43,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-06-10 11:14:43,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-06-10 11:14:43,103 INFO L185 Difference]: Start difference. First operand has 84 places, 88 transitions, 198 flow. Second operand 3 states and 286 transitions. [2021-06-10 11:14:43,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 214 flow [2021-06-10 11:14:43,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 11:14:43,106 INFO L241 Difference]: Finished difference. Result has 85 places, 88 transitions, 202 flow [2021-06-10 11:14:43,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2021-06-10 11:14:43,107 INFO L343 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2021-06-10 11:14:43,107 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 202 flow [2021-06-10 11:14:43,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2021-06-10 11:14:43,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:43,107 INFO L263 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] [2021-06-10 11:14:43,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 11:14:43,108 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:43,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:43,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1430017472, now seen corresponding path program 1 times [2021-06-10 11:14:43,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:43,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239270774] [2021-06-10 11:14:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:43,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:43,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:43,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 11:14:43,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:43,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239270774] [2021-06-10 11:14:43,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:43,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 11:14:43,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114561888] [2021-06-10 11:14:43,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:14:43,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:43,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:14:43,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:14:43,175 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 109 [2021-06-10 11:14:43,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-06-10 11:14:43,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:43,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 109 [2021-06-10 11:14:43,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:43,421 INFO L129 PetriNetUnfolder]: 150/605 cut-off events. [2021-06-10 11:14:43,421 INFO L130 PetriNetUnfolder]: For 52/53 co-relation queries the response was YES. [2021-06-10 11:14:43,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 605 events. 150/605 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3731 event pairs, 58 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 922. Up to 166 conditions per place. [2021-06-10 11:14:43,427 INFO L132 encePairwiseOnDemand]: 92/109 looper letters, 31 selfloop transitions, 6 changer transitions 29/128 dead transitions. [2021-06-10 11:14:43,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 414 flow [2021-06-10 11:14:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 11:14:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 11:14:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2021-06-10 11:14:43,430 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8091743119266055 [2021-06-10 11:14:43,430 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2021-06-10 11:14:43,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2021-06-10 11:14:43,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:43,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2021-06-10 11:14:43,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 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) [2021-06-10 11:14:43,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-06-10 11:14:43,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-06-10 11:14:43,436 INFO L185 Difference]: Start difference. First operand has 85 places, 88 transitions, 202 flow. Second operand 5 states and 441 transitions. [2021-06-10 11:14:43,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 414 flow [2021-06-10 11:14:43,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 11:14:43,444 INFO L241 Difference]: Finished difference. Result has 91 places, 91 transitions, 270 flow [2021-06-10 11:14:43,444 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2021-06-10 11:14:43,444 INFO L343 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2021-06-10 11:14:43,444 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 270 flow [2021-06-10 11:14:43,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-06-10 11:14:43,445 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:43,445 INFO L263 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] [2021-06-10 11:14:43,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 11:14:43,446 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:43,446 INFO L82 PathProgramCache]: Analyzing trace with hash 806641384, now seen corresponding path program 2 times [2021-06-10 11:14:43,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:43,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971794770] [2021-06-10 11:14:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:43,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:43,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:43,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:43,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:43,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971794770] [2021-06-10 11:14:43,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:43,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 11:14:43,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146260192] [2021-06-10 11:14:43,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:14:43,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:43,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:14:43,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:14:43,508 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 109 [2021-06-10 11:14:43,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-06-10 11:14:43,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:43,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 109 [2021-06-10 11:14:43,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:43,702 INFO L129 PetriNetUnfolder]: 206/795 cut-off events. [2021-06-10 11:14:43,702 INFO L130 PetriNetUnfolder]: For 375/385 co-relation queries the response was YES. [2021-06-10 11:14:43,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 795 events. 206/795 cut-off events. For 375/385 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5194 event pairs, 46 based on Foata normal form. 14/731 useless extension candidates. Maximal degree in co-relation 1472. Up to 131 conditions per place. [2021-06-10 11:14:43,708 INFO L132 encePairwiseOnDemand]: 91/109 looper letters, 51 selfloop transitions, 27 changer transitions 1/141 dead transitions. [2021-06-10 11:14:43,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 640 flow [2021-06-10 11:14:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 11:14:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 11:14:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2021-06-10 11:14:43,710 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8165137614678899 [2021-06-10 11:14:43,710 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2021-06-10 11:14:43,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2021-06-10 11:14:43,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:43,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2021-06-10 11:14:43,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-06-10 11:14:43,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-06-10 11:14:43,714 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-06-10 11:14:43,714 INFO L185 Difference]: Start difference. First operand has 91 places, 91 transitions, 270 flow. Second operand 5 states and 445 transitions. [2021-06-10 11:14:43,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 640 flow [2021-06-10 11:14:43,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 141 transitions, 580 flow, removed 30 selfloop flow, removed 0 redundant places. [2021-06-10 11:14:43,723 INFO L241 Difference]: Finished difference. Result has 99 places, 114 transitions, 505 flow [2021-06-10 11:14:43,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2021-06-10 11:14:43,724 INFO L343 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2021-06-10 11:14:43,724 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 505 flow [2021-06-10 11:14:43,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-06-10 11:14:43,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:43,724 INFO L263 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] [2021-06-10 11:14:43,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 11:14:43,725 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:43,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:43,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1948192768, now seen corresponding path program 3 times [2021-06-10 11:14:43,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:43,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123350432] [2021-06-10 11:14:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:43,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:43,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:43,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:43,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:43,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:43,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123350432] [2021-06-10 11:14:43,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:43,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 11:14:43,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021053550] [2021-06-10 11:14:43,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:14:43,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:43,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:14:43,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:14:43,798 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 109 [2021-06-10 11:14:43,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 505 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-06-10 11:14:43,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:43,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 109 [2021-06-10 11:14:43,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:43,994 INFO L129 PetriNetUnfolder]: 268/1039 cut-off events. [2021-06-10 11:14:43,994 INFO L130 PetriNetUnfolder]: For 1462/1479 co-relation queries the response was YES. [2021-06-10 11:14:43,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1039 events. 268/1039 cut-off events. For 1462/1479 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7414 event pairs, 52 based on Foata normal form. 24/933 useless extension candidates. Maximal degree in co-relation 2309. Up to 243 conditions per place. [2021-06-10 11:14:44,001 INFO L132 encePairwiseOnDemand]: 92/109 looper letters, 72 selfloop transitions, 25 changer transitions 1/160 dead transitions. [2021-06-10 11:14:44,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 160 transitions, 980 flow [2021-06-10 11:14:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 11:14:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 11:14:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2021-06-10 11:14:44,003 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8091743119266055 [2021-06-10 11:14:44,003 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2021-06-10 11:14:44,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2021-06-10 11:14:44,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:44,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2021-06-10 11:14:44,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 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) [2021-06-10 11:14:44,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-06-10 11:14:44,007 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-06-10 11:14:44,007 INFO L185 Difference]: Start difference. First operand has 99 places, 114 transitions, 505 flow. Second operand 5 states and 441 transitions. [2021-06-10 11:14:44,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 160 transitions, 980 flow [2021-06-10 11:14:44,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 966 flow, removed 7 selfloop flow, removed 0 redundant places. [2021-06-10 11:14:44,020 INFO L241 Difference]: Finished difference. Result has 107 places, 135 transitions, 802 flow [2021-06-10 11:14:44,020 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=802, PETRI_PLACES=107, PETRI_TRANSITIONS=135} [2021-06-10 11:14:44,020 INFO L343 CegarLoopForPetriNet]: 83 programPoint places, 24 predicate places. [2021-06-10 11:14:44,021 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 135 transitions, 802 flow [2021-06-10 11:14:44,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-06-10 11:14:44,021 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:44,021 INFO L263 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] [2021-06-10 11:14:44,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 11:14:44,021 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash -337492920, now seen corresponding path program 4 times [2021-06-10 11:14:44,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:44,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499805458] [2021-06-10 11:14:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:44,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:44,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:44,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:44,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:44,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:44,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 11:14:44,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:44,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:44,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499805458] [2021-06-10 11:14:44,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:44,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 11:14:44,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25614775] [2021-06-10 11:14:44,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:14:44,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:44,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:14:44,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:14:44,092 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 109 [2021-06-10 11:14:44,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 135 transitions, 802 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-06-10 11:14:44,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:44,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 109 [2021-06-10 11:14:44,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:44,349 INFO L129 PetriNetUnfolder]: 327/1152 cut-off events. [2021-06-10 11:14:44,349 INFO L130 PetriNetUnfolder]: For 1473/1520 co-relation queries the response was YES. [2021-06-10 11:14:44,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 1152 events. 327/1152 cut-off events. For 1473/1520 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8168 event pairs, 80 based on Foata normal form. 7/1038 useless extension candidates. Maximal degree in co-relation 2852. Up to 398 conditions per place. [2021-06-10 11:14:44,356 INFO L132 encePairwiseOnDemand]: 92/109 looper letters, 0 selfloop transitions, 0 changer transitions 166/166 dead transitions. [2021-06-10 11:14:44,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 166 transitions, 961 flow [2021-06-10 11:14:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 11:14:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 11:14:44,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2021-06-10 11:14:44,358 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8073394495412844 [2021-06-10 11:14:44,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2021-06-10 11:14:44,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2021-06-10 11:14:44,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:44,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2021-06-10 11:14:44,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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) [2021-06-10 11:14:44,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-06-10 11:14:44,361 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-06-10 11:14:44,361 INFO L185 Difference]: Start difference. First operand has 107 places, 135 transitions, 802 flow. Second operand 5 states and 440 transitions. [2021-06-10 11:14:44,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 166 transitions, 961 flow [2021-06-10 11:14:44,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 166 transitions, 927 flow, removed 16 selfloop flow, removed 1 redundant places. [2021-06-10 11:14:44,371 INFO L241 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2021-06-10 11:14:44,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2021-06-10 11:14:44,372 INFO L343 CegarLoopForPetriNet]: 83 programPoint places, 23 predicate places. [2021-06-10 11:14:44,372 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2021-06-10 11:14:44,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-06-10 11:14:44,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 11:14:44,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:14:44 BasicIcfg [2021-06-10 11:14:44,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 11:14:44,378 INFO L168 Benchmark]: Toolchain (without parser) took 3070.74 ms. Allocated memory is still 383.8 MB. Free memory was 346.5 MB in the beginning and 193.8 MB in the end (delta: 152.7 MB). Peak memory consumption was 153.9 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:44,379 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 383.8 MB. Free memory is still 364.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 11:14:44,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.81 ms. Allocated memory is still 383.8 MB. Free memory was 346.4 MB in the beginning and 346.4 MB in the end (delta: 65.3 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:44,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.92 ms. Allocated memory is still 383.8 MB. Free memory was 346.4 MB in the beginning and 344.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:44,381 INFO L168 Benchmark]: Boogie Preprocessor took 41.65 ms. Allocated memory is still 383.8 MB. Free memory was 344.3 MB in the beginning and 343.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 11:14:44,383 INFO L168 Benchmark]: RCFGBuilder took 420.86 ms. Allocated memory is still 383.8 MB. Free memory was 343.3 MB in the beginning and 318.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:44,383 INFO L168 Benchmark]: TraceAbstraction took 2033.41 ms. Allocated memory is still 383.8 MB. Free memory was 317.1 MB in the beginning and 193.8 MB in the end (delta: 123.2 MB). Peak memory consumption was 125.3 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:44,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 383.8 MB. Free memory is still 364.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 520.81 ms. Allocated memory is still 383.8 MB. Free memory was 346.4 MB in the beginning and 346.4 MB in the end (delta: 65.3 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.92 ms. Allocated memory is still 383.8 MB. Free memory was 346.4 MB in the beginning and 344.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 41.65 ms. Allocated memory is still 383.8 MB. Free memory was 344.3 MB in the beginning and 343.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 420.86 ms. Allocated memory is still 383.8 MB. Free memory was 343.3 MB in the beginning and 318.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2033.41 ms. Allocated memory is still 383.8 MB. Free memory was 317.1 MB in the beginning and 193.8 MB in the end (delta: 123.2 MB). Peak memory consumption was 125.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: 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, 88 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1923.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1213.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 58.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 180 SDtfs, 130 SDslu, 68 SDs, 0 SdLazy, 313 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 295.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=802occurred in iteration=6, InterpolantAutomatonStates: 28, 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: 44.7ms SsaConstructionTime, 133.9ms SatisfiabilityAnalysisTime, 291.5ms InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...