/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 09:36:53,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 09:36:53,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 09:36:53,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 09:36:53,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 09:36:53,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 09:36:53,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 09:36:53,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 09:36:53,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 09:36:53,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 09:36:53,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 09:36:53,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 09:36:53,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 09:36:53,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 09:36:53,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 09:36:53,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 09:36:53,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 09:36:53,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 09:36:53,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 09:36:53,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 09:36:53,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 09:36:53,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 09:36:53,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 09:36:53,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 09:36:53,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 09:36:53,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 09:36:53,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 09:36:53,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 09:36:53,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 09:36:53,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 09:36:53,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 09:36:53,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 09:36:53,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 09:36:53,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 09:36:53,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 09:36:53,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 09:36:53,948 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-FA-SemanticLbe.epf [2021-03-11 09:36:53,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 09:36:53,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 09:36:53,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 09:36:53,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 09:36:53,985 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 09:36:53,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 09:36:53,985 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 09:36:53,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 09:36:53,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 09:36:53,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 09:36:53,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 09:36:53,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 09:36:53,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 09:36:53,987 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 09:36:53,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 09:36:53,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 09:36:53,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 09:36:53,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 09:36:53,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 09:36:53,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 09:36:53,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 09:36:53,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 09:36:53,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 09:36:53,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 09:36:53,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 09:36:53,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 09:36:53,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 09:36:53,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 09:36:53,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 09:36:54,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 09:36:54,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 09:36:54,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 09:36:54,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 09:36:54,297 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 09:36:54,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-11 09:36:54,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad33d785/b3cabce6cc524792a6ae94ad2a9c25c5/FLAGde98701dd [2021-03-11 09:36:54,919 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 09:36:54,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-11 09:36:54,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad33d785/b3cabce6cc524792a6ae94ad2a9c25c5/FLAGde98701dd [2021-03-11 09:36:55,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad33d785/b3cabce6cc524792a6ae94ad2a9c25c5 [2021-03-11 09:36:55,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 09:36:55,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 09:36:55,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 09:36:55,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 09:36:55,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 09:36:55,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ca2644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55, skipping insertion in model container [2021-03-11 09:36:55,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 09:36:55,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 09:36:55,561 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 09:36:55,645 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-03-11 09:36:55,651 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-03-11 09:36:55,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 09:36:55,661 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 09:36:55,673 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 09:36:55,698 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-03-11 09:36:55,700 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-03-11 09:36:55,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 09:36:55,774 INFO L208 MainTranslator]: Completed translation [2021-03-11 09:36:55,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55 WrapperNode [2021-03-11 09:36:55,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 09:36:55,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 09:36:55,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 09:36:55,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 09:36:55,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 09:36:55,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 09:36:55,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 09:36:55,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 09:36:55,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... [2021-03-11 09:36:55,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 09:36:55,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 09:36:55,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 09:36:55,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 09:36:55,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 09:36:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 09:36:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-11 09:36:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-11 09:36:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 09:36:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 09:36:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 09:36:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 09:36:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 09:36:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 09:36:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 09:36:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 09:36:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 09:36:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 09:36:55,938 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 09:36:56,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 09:36:56,212 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-11 09:36:56,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 09:36:56 BoogieIcfgContainer [2021-03-11 09:36:56,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 09:36:56,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 09:36:56,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 09:36:56,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 09:36:56,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 09:36:55" (1/3) ... [2021-03-11 09:36:56,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64477643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 09:36:56, skipping insertion in model container [2021-03-11 09:36:56,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 09:36:55" (2/3) ... [2021-03-11 09:36:56,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64477643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 09:36:56, skipping insertion in model container [2021-03-11 09:36:56,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 09:36:56" (3/3) ... [2021-03-11 09:36:56,220 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-03-11 09:36:56,241 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 09:36:56,241 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 09:36:56,244 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 09:36:56,245 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 09:36:56,292 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,293 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,293 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,293 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,293 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,293 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,293 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,293 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,294 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,294 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,294 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,294 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,294 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,297 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,297 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,297 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,297 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,302 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,302 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,302 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,302 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,310 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,311 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,311 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,311 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,319 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,319 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,319 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,319 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,319 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,320 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 09:36:56,324 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 09:36:56,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 09:36:56,352 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 09:36:56,352 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 09:36:56,352 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 09:36:56,353 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 09:36:56,353 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 09:36:56,353 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 09:36:56,353 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 09:36:56,353 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 09:36:56,362 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 09:36:56,370 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 96 transitions, 214 flow [2021-03-11 09:36:56,372 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 96 transitions, 214 flow [2021-03-11 09:36:56,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 96 transitions, 214 flow [2021-03-11 09:36:56,405 INFO L129 PetriNetUnfolder]: 14/96 cut-off events. [2021-03-11 09:36:56,405 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 09:36:56,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 14/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-11 09:36:56,411 INFO L116 LiptonReduction]: Number of co-enabled transitions 2028 [2021-03-11 09:36:58,334 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2021-03-11 09:36:58,576 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-11 09:36:58,761 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-03-11 09:36:59,030 INFO L131 LiptonReduction]: Checked pairs total: 7060 [2021-03-11 09:36:59,030 INFO L133 LiptonReduction]: Total number of compositions: 69 [2021-03-11 09:36:59,038 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 44 transitions, 110 flow [2021-03-11 09:36:59,061 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 389 states, 385 states have (on average 2.7506493506493506) internal successors, (1059), 388 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 385 states have (on average 2.7506493506493506) internal successors, (1059), 388 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 09:36:59,069 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 09:36:59,069 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 09:36:59,070 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 09:36:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 09:36:59,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1063560767, now seen corresponding path program 1 times [2021-03-11 09:36:59,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 09:36:59,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142296333] [2021-03-11 09:36:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 09:36:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 09:36:59,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 09:36:59,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 09:36:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 09:36:59,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142296333] [2021-03-11 09:36:59,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 09:36:59,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 09:36:59,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565930868] [2021-03-11 09:36:59,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 09:36:59,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 09:36:59,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 09:36:59,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 09:36:59,239 INFO L87 Difference]: Start difference. First operand has 389 states, 385 states have (on average 2.7506493506493506) internal successors, (1059), 388 states have internal predecessors, (1059), 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 09:36:59,288 INFO L93 Difference]: Finished difference Result 443 states and 1093 transitions. [2021-03-11 09:36:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 09:36:59,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2021-03-11 09:36:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 09:36:59,313 INFO L225 Difference]: With dead ends: 443 [2021-03-11 09:36:59,314 INFO L226 Difference]: Without dead ends: 293 [2021-03-11 09:36:59,315 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 09:36:59,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-03-11 09:36:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 275. [2021-03-11 09:36:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 271 states have (on average 2.6863468634686347) internal successors, (728), 274 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 728 transitions. [2021-03-11 09:36:59,391 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 728 transitions. Word has length 6 [2021-03-11 09:36:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 09:36:59,391 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 728 transitions. [2021-03-11 09:36:59,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 728 transitions. [2021-03-11 09:36:59,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 09:36:59,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 09:36:59,393 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 09:36:59,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 09:36:59,394 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 09:36:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 09:36:59,396 INFO L82 PathProgramCache]: Analyzing trace with hash 459959238, now seen corresponding path program 1 times [2021-03-11 09:36:59,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 09:36:59,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385476373] [2021-03-11 09:36:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 09:36:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 09:36:59,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 09:36:59,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 09:36:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 09:36:59,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385476373] [2021-03-11 09:36:59,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 09:36:59,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 09:36:59,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420311061] [2021-03-11 09:36:59,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 09:36:59,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 09:36:59,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 09:36:59,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 09:36:59,483 INFO L87 Difference]: Start difference. First operand 275 states and 728 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 09:36:59,503 INFO L93 Difference]: Finished difference Result 266 states and 687 transitions. [2021-03-11 09:36:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 09:36:59,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2021-03-11 09:36:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 09:36:59,506 INFO L225 Difference]: With dead ends: 266 [2021-03-11 09:36:59,506 INFO L226 Difference]: Without dead ends: 188 [2021-03-11 09:36:59,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 09:36:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-03-11 09:36:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-03-11 09:36:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 2.6684782608695654) internal successors, (491), 187 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 491 transitions. [2021-03-11 09:36:59,514 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 491 transitions. Word has length 8 [2021-03-11 09:36:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 09:36:59,519 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 491 transitions. [2021-03-11 09:36:59,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 491 transitions. [2021-03-11 09:36:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 09:36:59,520 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 09:36:59,520 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 09:36:59,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 09:36:59,521 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 09:36:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 09:36:59,521 INFO L82 PathProgramCache]: Analyzing trace with hash 251653519, now seen corresponding path program 1 times [2021-03-11 09:36:59,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 09:36:59,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499449734] [2021-03-11 09:36:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 09:36:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 09:36:59,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 09:36:59,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 09:36:59,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 09:36:59,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 09:36:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 09:36:59,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499449734] [2021-03-11 09:36:59,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 09:36:59,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 09:36:59,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356874331] [2021-03-11 09:36:59,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 09:36:59,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 09:36:59,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 09:36:59,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 09:36:59,609 INFO L87 Difference]: Start difference. First operand 188 states and 491 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 09:36:59,661 INFO L93 Difference]: Finished difference Result 258 states and 714 transitions. [2021-03-11 09:36:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 09:36:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2021-03-11 09:36:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 09:36:59,665 INFO L225 Difference]: With dead ends: 258 [2021-03-11 09:36:59,665 INFO L226 Difference]: Without dead ends: 234 [2021-03-11 09:36:59,665 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 09:36:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-03-11 09:36:59,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 186. [2021-03-11 09:36:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 2.6648351648351647) internal successors, (485), 185 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 485 transitions. [2021-03-11 09:36:59,675 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 485 transitions. Word has length 11 [2021-03-11 09:36:59,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 09:36:59,675 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 485 transitions. [2021-03-11 09:36:59,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,675 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 485 transitions. [2021-03-11 09:36:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 09:36:59,676 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 09:36:59,676 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 09:36:59,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 09:36:59,677 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 09:36:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 09:36:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1668656807, now seen corresponding path program 2 times [2021-03-11 09:36:59,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 09:36:59,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907937462] [2021-03-11 09:36:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 09:36:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 09:36:59,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 09:36:59,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 09:36:59,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 09:36:59,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 09:36:59,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 09:36:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 09:36:59,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907937462] [2021-03-11 09:36:59,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 09:36:59,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 09:36:59,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28096390] [2021-03-11 09:36:59,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 09:36:59,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 09:36:59,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 09:36:59,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 09:36:59,712 INFO L87 Difference]: Start difference. First operand 186 states and 485 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 09:36:59,744 INFO L93 Difference]: Finished difference Result 212 states and 636 transitions. [2021-03-11 09:36:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 09:36:59,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2021-03-11 09:36:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 09:36:59,745 INFO L225 Difference]: With dead ends: 212 [2021-03-11 09:36:59,745 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 09:36:59,745 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 09:36:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 09:36:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 09:36:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 09:36:59,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-03-11 09:36:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 09:36:59,746 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 09:36:59,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 09:36:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 09:36:59,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 09:36:59,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 09:36:59,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 09:36:59 BasicIcfg [2021-03-11 09:36:59,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 09:36:59,751 INFO L168 Benchmark]: Toolchain (without parser) took 4398.29 ms. Allocated memory was 255.9 MB in the beginning and 421.5 MB in the end (delta: 165.7 MB). Free memory was 234.6 MB in the beginning and 335.1 MB in the end (delta: -100.5 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.0 GB. [2021-03-11 09:36:59,751 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 09:36:59,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.63 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 233.9 MB in the beginning and 313.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 09:36:59,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.79 ms. Allocated memory is still 350.2 MB. Free memory was 313.3 MB in the beginning and 311.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 09:36:59,752 INFO L168 Benchmark]: Boogie Preprocessor took 42.47 ms. Allocated memory is still 350.2 MB. Free memory was 311.4 MB in the beginning and 310.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 09:36:59,753 INFO L168 Benchmark]: RCFGBuilder took 341.92 ms. Allocated memory is still 350.2 MB. Free memory was 309.7 MB in the beginning and 324.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. [2021-03-11 09:36:59,753 INFO L168 Benchmark]: TraceAbstraction took 3534.39 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 323.7 MB in the beginning and 335.1 MB in the end (delta: -11.3 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.0 GB. [2021-03-11 09:36:59,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 418.63 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 233.9 MB in the beginning and 313.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.79 ms. Allocated memory is still 350.2 MB. Free memory was 313.3 MB in the beginning and 311.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 42.47 ms. Allocated memory is still 350.2 MB. Free memory was 311.4 MB in the beginning and 310.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 341.92 ms. Allocated memory is still 350.2 MB. Free memory was 309.7 MB in the beginning and 324.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3534.39 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 323.7 MB in the beginning and 335.1 MB in the end (delta: -11.3 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2657.9ms, 88 PlacesBefore, 42 PlacesAfterwards, 96 TransitionsBefore, 44 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 69 TotalNumberOfCompositions, 7060 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3699, positive: 3480, positive conditional: 0, positive unconditional: 3480, negative: 219, negative conditional: 0, negative unconditional: 219, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1337, positive: 1291, positive conditional: 0, positive unconditional: 1291, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1337, positive: 1264, positive conditional: 0, positive unconditional: 1264, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 73, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 161, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 113, negative conditional: 0, negative unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3699, positive: 2189, positive conditional: 0, positive unconditional: 2189, negative: 173, negative conditional: 0, negative unconditional: 173, unknown: 1337, unknown conditional: 0, unknown unconditional: 1337] , Statistics on independence cache: Total cache size (in pairs): 284, Positive cache size: 256, Positive conditional cache size: 0, Positive unconditional cache size: 256, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3396.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.4ms, AutomataDifference: 205.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2708.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 203 SDtfs, 140 SDslu, 155 SDs, 0 SdLazy, 59 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 66 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.7ms SsaConstructionTime, 62.8ms SatisfiabilityAnalysisTime, 176.5ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...