/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-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 01:23:41,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 01:23:41,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 01:23:41,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 01:23:41,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-22 01:23:41,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-22 01:23:41,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-22 01:23:41,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-22 01:23:41,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-22 01:23:41,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-22 01:23:41,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-22 01:23:41,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-22 01:23:41,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-22 01:23:41,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-22 01:23:41,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-22 01:23:41,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-22 01:23:41,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-22 01:23:41,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 01:23:41,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 01:23:41,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 01:23:41,673 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-NoLbe-Separate.epf [2021-05-22 01:23:41,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 01:23:41,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 01:23:41,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 01:23:41,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 01:23:41,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 01:23:41,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 01:23:41,704 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 01:23:41,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 01:23:41,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 01:23:41,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 01:23:41,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 01:23:41,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:23:41,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 01:23:41,706 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 01:23:41,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 01:23:41,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 01:23:41,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 01:23:41,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 01:23:41,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-22 01:23:41,964 INFO L275 PluginConnector]: CDTParser initialized [2021-05-22 01:23:41,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-05-22 01:23:42,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3814a46e7/cde85b36c57b438c823918558f7822a2/FLAG6aa6275a9 [2021-05-22 01:23:42,365 INFO L306 CDTParser]: Found 1 translation units. [2021-05-22 01:23:42,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-05-22 01:23:42,366 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-05-22 01:23:42,366 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-05-22 01:23:42,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3814a46e7/cde85b36c57b438c823918558f7822a2/FLAG6aa6275a9 [2021-05-22 01:23:42,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3814a46e7/cde85b36c57b438c823918558f7822a2 [2021-05-22 01:23:42,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 01:23:42,410 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-22 01:23:42,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-22 01:23:42,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-22 01:23:42,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-22 01:23:42,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b9a644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42, skipping insertion in model container [2021-05-22 01:23:42,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-22 01:23:42,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-22 01:23:42,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 01:23:42,546 INFO L203 MainTranslator]: Completed pre-run [2021-05-22 01:23:42,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 01:23:42,568 INFO L208 MainTranslator]: Completed translation [2021-05-22 01:23:42,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42 WrapperNode [2021-05-22 01:23:42,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-22 01:23:42,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 01:23:42,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 01:23:42,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 01:23:42,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 01:23:42,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 01:23:42,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 01:23:42,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 01:23:42,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (1/1) ... [2021-05-22 01:23:42,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 01:23:42,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 01:23:42,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 01:23:42,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 01:23:42,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (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 [2021-05-22 01:23:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-22 01:23:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-22 01:23:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-05-22 01:23:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-05-22 01:23:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 01:23:42,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 01:23:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-22 01:23:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-22 01:23:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-22 01:23:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-22 01:23:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-22 01:23:42,660 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 01:23:42,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 01:23:42,911 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-22 01:23:42,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:23:42 BoogieIcfgContainer [2021-05-22 01:23:42,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 01:23:42,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 01:23:42,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 01:23:42,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 01:23:42,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.05 01:23:42" (1/3) ... [2021-05-22 01:23:42,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abfcf31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:23:42, skipping insertion in model container [2021-05-22 01:23:42,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:42" (2/3) ... [2021-05-22 01:23:42,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abfcf31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:23:42, skipping insertion in model container [2021-05-22 01:23:42,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:23:42" (3/3) ... [2021-05-22 01:23:42,916 INFO L111 eAbstractionObserver]: Analyzing ICFG simpleReturn.c [2021-05-22 01:23:42,920 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 01:23:42,920 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 01:23:42,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 01:23:42,920 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 01:23:42,950 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,951 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,951 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,951 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,951 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,951 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,951 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,951 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,952 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,953 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,953 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,953 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,953 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,953 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,953 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,953 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,953 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,954 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,955 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,955 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,955 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,955 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,956 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,957 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,957 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,957 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,957 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,957 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,957 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:42,981 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-05-22 01:23:42,996 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:23:43,021 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:23:43,022 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:23:43,022 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:23:43,022 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:23:43,022 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:23:43,022 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:23:43,022 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:23:43,022 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:23:43,034 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 45 transitions, 98 flow [2021-05-22 01:23:43,045 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 73 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 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) [2021-05-22 01:23:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 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) [2021-05-22 01:23:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 01:23:43,054 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:43,054 INFO L521 BasicCegarLoop]: 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] [2021-05-22 01:23:43,055 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:43,060 INFO L82 PathProgramCache]: Analyzing trace with hash -843587546, now seen corresponding path program 1 times [2021-05-22 01:23:43,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:43,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138186675] [2021-05-22 01:23:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:43,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:43,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138186675] [2021-05-22 01:23:43,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138186675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:43,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:43,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-22 01:23:43,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329681896] [2021-05-22 01:23:43,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-22 01:23:43,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:43,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-22 01:23:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-05-22 01:23:43,663 INFO L87 Difference]: Start difference. First operand has 73 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 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 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:44,731 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2021-05-22 01:23:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-22 01:23:44,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 34 [2021-05-22 01:23:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:44,741 INFO L225 Difference]: With dead ends: 123 [2021-05-22 01:23:44,741 INFO L226 Difference]: Without dead ends: 78 [2021-05-22 01:23:44,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 975.1ms TimeCoverageRelationStatistics Valid=344, Invalid=1726, Unknown=0, NotChecked=0, Total=2070 [2021-05-22 01:23:44,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-22 01:23:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 63. [2021-05-22 01:23:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 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) [2021-05-22 01:23:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2021-05-22 01:23:44,770 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 34 [2021-05-22 01:23:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:44,770 INFO L482 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2021-05-22 01:23:44,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2021-05-22 01:23:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 01:23:44,771 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:44,771 INFO L521 BasicCegarLoop]: 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] [2021-05-22 01:23:44,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 01:23:44,772 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:44,772 INFO L82 PathProgramCache]: Analyzing trace with hash -155505434, now seen corresponding path program 2 times [2021-05-22 01:23:44,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:44,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976275881] [2021-05-22 01:23:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:44,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:44,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976275881] [2021-05-22 01:23:44,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976275881] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:44,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:44,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-22 01:23:44,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046633216] [2021-05-22 01:23:44,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-22 01:23:44,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:44,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-22 01:23:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-05-22 01:23:44,971 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:45,570 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2021-05-22 01:23:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-22 01:23:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 34 [2021-05-22 01:23:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:45,571 INFO L225 Difference]: With dead ends: 77 [2021-05-22 01:23:45,571 INFO L226 Difference]: Without dead ends: 51 [2021-05-22 01:23:45,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 505.7ms TimeCoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 01:23:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-22 01:23:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-05-22 01:23:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 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) [2021-05-22 01:23:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-05-22 01:23:45,575 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 34 [2021-05-22 01:23:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:45,576 INFO L482 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-05-22 01:23:45,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-05-22 01:23:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 01:23:45,576 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:45,577 INFO L521 BasicCegarLoop]: 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] [2021-05-22 01:23:45,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 01:23:45,577 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:45,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1347569062, now seen corresponding path program 3 times [2021-05-22 01:23:45,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:45,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401488170] [2021-05-22 01:23:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:45,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:45,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401488170] [2021-05-22 01:23:45,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401488170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:45,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:45,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-22 01:23:45,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507717581] [2021-05-22 01:23:45,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-22 01:23:45,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-22 01:23:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-05-22 01:23:45,774 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:46,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:46,370 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2021-05-22 01:23:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-22 01:23:46,371 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 34 [2021-05-22 01:23:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:46,371 INFO L225 Difference]: With dead ends: 71 [2021-05-22 01:23:46,371 INFO L226 Difference]: Without dead ends: 48 [2021-05-22 01:23:46,372 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 549.5ms TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2021-05-22 01:23:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-22 01:23:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-22 01:23:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 47 states have internal predecessors, (60), 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) [2021-05-22 01:23:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2021-05-22 01:23:46,374 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 34 [2021-05-22 01:23:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:46,375 INFO L482 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2021-05-22 01:23:46,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2021-05-22 01:23:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 01:23:46,375 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:46,375 INFO L521 BasicCegarLoop]: 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] [2021-05-22 01:23:46,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 01:23:46,376 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507158, now seen corresponding path program 4 times [2021-05-22 01:23:46,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:46,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553017375] [2021-05-22 01:23:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:46,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:46,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553017375] [2021-05-22 01:23:46,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553017375] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:46,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:46,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-22 01:23:46,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929798341] [2021-05-22 01:23:46,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-22 01:23:46,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:46,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-22 01:23:46,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-05-22 01:23:46,569 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:47,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:47,105 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2021-05-22 01:23:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-22 01:23:47,106 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 34 [2021-05-22 01:23:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:47,106 INFO L225 Difference]: With dead ends: 70 [2021-05-22 01:23:47,106 INFO L226 Difference]: Without dead ends: 45 [2021-05-22 01:23:47,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 485.6ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 01:23:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-22 01:23:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-05-22 01:23:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 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) [2021-05-22 01:23:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-05-22 01:23:47,111 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 34 [2021-05-22 01:23:47,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:47,111 INFO L482 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-05-22 01:23:47,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-05-22 01:23:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 01:23:47,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:47,112 INFO L521 BasicCegarLoop]: 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] [2021-05-22 01:23:47,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 01:23:47,113 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:47,113 INFO L82 PathProgramCache]: Analyzing trace with hash 434596646, now seen corresponding path program 5 times [2021-05-22 01:23:47,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:47,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973936579] [2021-05-22 01:23:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:47,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:47,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973936579] [2021-05-22 01:23:47,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973936579] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:47,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:47,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-22 01:23:47,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630489382] [2021-05-22 01:23:47,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-22 01:23:47,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:47,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-22 01:23:47,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-05-22 01:23:47,295 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:47,828 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2021-05-22 01:23:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-22 01:23:47,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 34 [2021-05-22 01:23:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:47,841 INFO L225 Difference]: With dead ends: 69 [2021-05-22 01:23:47,841 INFO L226 Difference]: Without dead ends: 42 [2021-05-22 01:23:47,842 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 492.5ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 01:23:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-22 01:23:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-22 01:23:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 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) [2021-05-22 01:23:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-05-22 01:23:47,844 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2021-05-22 01:23:47,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:47,844 INFO L482 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-05-22 01:23:47,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:47,844 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-05-22 01:23:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 01:23:47,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:47,845 INFO L521 BasicCegarLoop]: 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] [2021-05-22 01:23:47,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 01:23:47,845 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:47,845 INFO L82 PathProgramCache]: Analyzing trace with hash 800190614, now seen corresponding path program 6 times [2021-05-22 01:23:47,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:47,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386655160] [2021-05-22 01:23:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:48,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:48,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386655160] [2021-05-22 01:23:48,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386655160] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:48,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:48,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-22 01:23:48,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984650267] [2021-05-22 01:23:48,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-22 01:23:48,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:48,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-22 01:23:48,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-05-22 01:23:48,033 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:48,519 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-05-22 01:23:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-22 01:23:48,519 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 34 [2021-05-22 01:23:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:48,519 INFO L225 Difference]: With dead ends: 41 [2021-05-22 01:23:48,519 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 01:23:48,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 460.0ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 01:23:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 01:23:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 01:23:48,520 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) [2021-05-22 01:23:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 01:23:48,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-05-22 01:23:48,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:48,520 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 01:23:48,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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) [2021-05-22 01:23:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 01:23:48,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 01:23:48,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 01:23:48,521 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 01:23:48,522 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:23:48,523 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:23:48,523 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:23:48,523 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:23:48,523 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:23:48,523 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:23:48,523 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:23:48,523 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:23:48,523 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 01:23:48,524 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 45 transitions, 98 flow [2021-05-22 01:23:48,526 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 73 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 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) [2021-05-22 01:23:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 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) [2021-05-22 01:23:48,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 01:23:48,527 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-22 01:23:48,527 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 01:23:48,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 01:23:48 BasicIcfg [2021-05-22 01:23:48,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 01:23:48,530 INFO L168 Benchmark]: Toolchain (without parser) took 6120.01 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 314.3 MB in the beginning and 165.5 MB in the end (delta: 148.8 MB). Peak memory consumption was 221.8 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:48,530 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 352.3 MB. Free memory is still 332.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:23:48,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.96 ms. Allocated memory is still 352.3 MB. Free memory was 314.2 MB in the beginning and 334.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:48,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.17 ms. Allocated memory is still 352.3 MB. Free memory was 334.2 MB in the beginning and 332.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:48,530 INFO L168 Benchmark]: Boogie Preprocessor took 11.49 ms. Allocated memory is still 352.3 MB. Free memory was 332.1 MB in the beginning and 331.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:23:48,530 INFO L168 Benchmark]: RCFGBuilder took 310.57 ms. Allocated memory is still 352.3 MB. Free memory was 331.1 MB in the beginning and 313.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:48,531 INFO L168 Benchmark]: TraceAbstraction took 5616.51 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 312.2 MB in the beginning and 165.5 MB in the end (delta: 146.7 MB). Peak memory consumption was 221.1 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:48,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 352.3 MB. Free memory is still 332.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 157.96 ms. Allocated memory is still 352.3 MB. Free memory was 314.2 MB in the beginning and 334.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.17 ms. Allocated memory is still 352.3 MB. Free memory was 334.2 MB in the beginning and 332.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.49 ms. Allocated memory is still 352.3 MB. Free memory was 332.1 MB in the beginning and 331.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 310.57 ms. Allocated memory is still 352.3 MB. Free memory was 331.1 MB in the beginning and 313.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5616.51 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 312.2 MB in the beginning and 165.5 MB in the end (delta: 146.7 MB). Peak memory consumption was 221.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5501.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 3863.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 141 SDtfs, 942 SDslu, 1711 SDs, 0 SdLazy, 2058 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 936.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 3468.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.4ms SsaConstructionTime, 133.3ms SatisfiabilityAnalysisTime, 1311.6ms InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 1910 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...