/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-29289db [2021-06-05 12:56:06,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 12:56:06,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 12:56:06,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 12:56:06,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 12:56:06,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 12:56:06,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 12:56:06,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 12:56:06,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 12:56:06,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 12:56:06,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 12:56:06,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 12:56:06,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 12:56:06,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 12:56:06,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 12:56:06,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 12:56:06,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 12:56:06,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 12:56:06,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 12:56:06,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 12:56:06,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 12:56:06,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 12:56:06,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 12:56:06,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 12:56:06,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 12:56:06,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 12:56:06,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 12:56:06,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 12:56:06,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 12:56:06,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 12:56:06,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 12:56:06,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 12:56:06,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 12:56:06,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 12:56:06,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 12:56:06,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 12:56:06,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 12:56:06,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 12:56:06,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 12:56:06,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 12:56:06,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 12:56:06,996 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 [2021-06-05 12:56:07,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 12:56:07,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 12:56:07,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 12:56:07,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 12:56:07,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 12:56:07,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 12:56:07,038 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 12:56:07,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 12:56:07,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 12:56:07,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 12:56:07,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 12:56:07,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 12:56:07,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 12:56:07,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 12:56:07,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 12:56:07,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 12:56:07,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 12:56:07,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 12:56:07,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 12:56:07,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 12:56:07,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 12:56:07,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 12:56:07,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 12:56:07,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 12:56:07,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 12:56:07,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 12:56:07,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 12:56:07,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 12:56:07,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 12:56:07,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 12:56:07,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 12:56:07,042 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 12:56:07,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 12:56:07,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 12:56:07,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 12:56:07,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 12:56:07,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 12:56:07,365 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 12:56:07,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-06-05 12:56:07,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9cdc7a7/2955c09b93a14620b6e15d040cd1a991/FLAG72369516d [2021-06-05 12:56:07,812 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 12:56:07,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-06-05 12:56:07,813 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:56:07,813 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:56:07,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9cdc7a7/2955c09b93a14620b6e15d040cd1a991/FLAG72369516d [2021-06-05 12:56:08,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9cdc7a7/2955c09b93a14620b6e15d040cd1a991 [2021-06-05 12:56:08,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 12:56:08,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 12:56:08,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 12:56:08,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 12:56:08,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 12:56:08,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d90cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08, skipping insertion in model container [2021-06-05 12:56:08,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 12:56:08,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 12:56:08,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:56:08,485 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 12:56:08,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:56:08,511 INFO L208 MainTranslator]: Completed translation [2021-06-05 12:56:08,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08 WrapperNode [2021-06-05 12:56:08,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 12:56:08,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 12:56:08,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 12:56:08,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 12:56:08,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 12:56:08,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 12:56:08,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 12:56:08,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 12:56:08,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... [2021-06-05 12:56:08,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 12:56:08,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 12:56:08,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 12:56:08,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 12:56:08,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 12:56:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-06-05 12:56:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 12:56:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-06-05 12:56:08,641 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-06-05 12:56:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 12:56:08,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 12:56:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 12:56:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 12:56:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-05 12:56:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 12:56:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 12:56:08,644 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 12:56:08,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 12:56:08,931 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-05 12:56:08,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:56:08 BoogieIcfgContainer [2021-06-05 12:56:08,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 12:56:08,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 12:56:08,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 12:56:08,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 12:56:08,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:56:08" (1/3) ... [2021-06-05 12:56:08,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a627190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:56:08, skipping insertion in model container [2021-06-05 12:56:08,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:08" (2/3) ... [2021-06-05 12:56:08,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a627190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:56:08, skipping insertion in model container [2021-06-05 12:56:08,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:56:08" (3/3) ... [2021-06-05 12:56:08,945 INFO L111 eAbstractionObserver]: Analyzing ICFG simpleReturn.c [2021-06-05 12:56:08,952 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 12:56:08,952 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 12:56:08,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 12:56:08,953 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 12:56:08,974 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,974 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,975 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,975 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,975 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,975 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,975 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,975 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,976 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,976 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,976 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,976 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,976 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,976 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,977 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,978 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,978 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,978 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,978 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,978 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,978 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,979 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,979 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,979 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,979 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,979 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,979 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,980 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,980 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,980 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,980 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,980 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,980 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,982 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,983 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,983 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,983 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,983 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,983 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,983 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:08,991 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 12:56:09,007 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 12:56:09,024 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:56:09,024 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:56:09,025 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:56:09,025 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:56:09,025 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:56:09,025 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:56:09,025 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:56:09,025 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 12:56:09,034 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 45 transitions, 98 flow [2021-06-05 12:56:09,045 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) [2021-06-05 12:56:09,047 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) [2021-06-05 12:56:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-06-05 12:56:09,053 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:09,054 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] [2021-06-05 12:56:09,054 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash -843587546, now seen corresponding path program 1 times [2021-06-05 12:56:09,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:09,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357413529] [2021-06-05 12:56:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:56:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:56:09,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:56:09,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357413529] [2021-06-05 12:56:09,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357413529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:56:09,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:56:09,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 12:56:09,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597385343] [2021-06-05 12:56:09,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 12:56:09,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:56:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 12:56:09,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 12:56:09,678 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) [2021-06-05 12:56:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:56:10,921 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2021-06-05 12:56:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 12:56:10,922 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 [2021-06-05 12:56:10,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:56:10,929 INFO L225 Difference]: With dead ends: 123 [2021-06-05 12:56:10,929 INFO L226 Difference]: Without dead ends: 78 [2021-06-05 12:56:10,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1113.2ms TimeCoverageRelationStatistics Valid=344, Invalid=1726, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 12:56:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-06-05 12:56:10,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 63. [2021-06-05 12:56:10,958 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) [2021-06-05 12:56:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2021-06-05 12:56:10,960 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 34 [2021-06-05 12:56:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:56:10,961 INFO L482 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2021-06-05 12:56:10,961 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) [2021-06-05 12:56:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2021-06-05 12:56:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-06-05 12:56:10,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:10,962 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] [2021-06-05 12:56:10,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 12:56:10,963 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:10,963 INFO L82 PathProgramCache]: Analyzing trace with hash -155505434, now seen corresponding path program 2 times [2021-06-05 12:56:10,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:10,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355967343] [2021-06-05 12:56:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:56:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:56:11,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:56:11,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355967343] [2021-06-05 12:56:11,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355967343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:56:11,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:56:11,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 12:56:11,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212572930] [2021-06-05 12:56:11,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 12:56:11,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:56:11,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 12:56:11,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 12:56:11,230 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) [2021-06-05 12:56:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:56:11,932 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2021-06-05 12:56:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 12:56:11,933 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 [2021-06-05 12:56:11,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:56:11,934 INFO L225 Difference]: With dead ends: 77 [2021-06-05 12:56:11,934 INFO L226 Difference]: Without dead ends: 51 [2021-06-05 12:56:11,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 616.4ms TimeCoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 12:56:11,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-06-05 12:56:11,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-06-05 12:56:11,939 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) [2021-06-05 12:56:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-06-05 12:56:11,940 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 34 [2021-06-05 12:56:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:56:11,940 INFO L482 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-06-05 12:56:11,940 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) [2021-06-05 12:56:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-06-05 12:56:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-06-05 12:56:11,941 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:11,941 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] [2021-06-05 12:56:11,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 12:56:11,942 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:11,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:11,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1347569062, now seen corresponding path program 3 times [2021-06-05 12:56:11,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:11,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226285105] [2021-06-05 12:56:11,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:56:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:56:12,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:56:12,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226285105] [2021-06-05 12:56:12,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226285105] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:56:12,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:56:12,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 12:56:12,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257809831] [2021-06-05 12:56:12,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 12:56:12,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:56:12,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 12:56:12,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 12:56:12,177 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) [2021-06-05 12:56:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:56:12,787 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2021-06-05 12:56:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 12:56:12,788 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 [2021-06-05 12:56:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:56:12,789 INFO L225 Difference]: With dead ends: 71 [2021-06-05 12:56:12,789 INFO L226 Difference]: Without dead ends: 48 [2021-06-05 12:56:12,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 571.2ms TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 12:56:12,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-06-05 12:56:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-06-05 12:56:12,793 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) [2021-06-05 12:56:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2021-06-05 12:56:12,794 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 34 [2021-06-05 12:56:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:56:12,794 INFO L482 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2021-06-05 12:56:12,794 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) [2021-06-05 12:56:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2021-06-05 12:56:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-06-05 12:56:12,795 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:12,795 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] [2021-06-05 12:56:12,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 12:56:12,796 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:12,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507158, now seen corresponding path program 4 times [2021-06-05 12:56:12,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:12,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842906063] [2021-06-05 12:56:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:56:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:56:13,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:56:13,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842906063] [2021-06-05 12:56:13,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842906063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:56:13,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:56:13,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 12:56:13,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14378383] [2021-06-05 12:56:13,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 12:56:13,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:56:13,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 12:56:13,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 12:56:13,049 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) [2021-06-05 12:56:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:56:13,686 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2021-06-05 12:56:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 12:56:13,687 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 [2021-06-05 12:56:13,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:56:13,688 INFO L225 Difference]: With dead ends: 70 [2021-06-05 12:56:13,688 INFO L226 Difference]: Without dead ends: 45 [2021-06-05 12:56:13,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 590.1ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 12:56:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-06-05 12:56:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-06-05 12:56:13,691 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) [2021-06-05 12:56:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-06-05 12:56:13,692 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 34 [2021-06-05 12:56:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:56:13,692 INFO L482 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-06-05 12:56:13,692 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) [2021-06-05 12:56:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-06-05 12:56:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-06-05 12:56:13,693 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:13,693 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] [2021-06-05 12:56:13,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 12:56:13,693 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:13,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:13,693 INFO L82 PathProgramCache]: Analyzing trace with hash 434596646, now seen corresponding path program 5 times [2021-06-05 12:56:13,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:13,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896202841] [2021-06-05 12:56:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:56:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:56:13,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:56:13,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896202841] [2021-06-05 12:56:13,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896202841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:56:13,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:56:13,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 12:56:13,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363367775] [2021-06-05 12:56:13,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 12:56:13,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:56:13,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 12:56:13,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 12:56:13,906 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) [2021-06-05 12:56:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:56:14,548 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2021-06-05 12:56:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 12:56:14,549 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 [2021-06-05 12:56:14,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:56:14,549 INFO L225 Difference]: With dead ends: 69 [2021-06-05 12:56:14,549 INFO L226 Difference]: Without dead ends: 42 [2021-06-05 12:56:14,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 598.5ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 12:56:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-06-05 12:56:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-06-05 12:56:14,554 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) [2021-06-05 12:56:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-06-05 12:56:14,555 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2021-06-05 12:56:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:56:14,555 INFO L482 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-06-05 12:56:14,555 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) [2021-06-05 12:56:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-06-05 12:56:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-06-05 12:56:14,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:14,556 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] [2021-06-05 12:56:14,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 12:56:14,556 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:14,557 INFO L82 PathProgramCache]: Analyzing trace with hash 800190614, now seen corresponding path program 6 times [2021-06-05 12:56:14,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:14,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172309892] [2021-06-05 12:56:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:56:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:56:14,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:56:14,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172309892] [2021-06-05 12:56:14,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172309892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:56:14,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:56:14,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 12:56:14,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66386989] [2021-06-05 12:56:14,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 12:56:14,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:56:14,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 12:56:14,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 12:56:14,792 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) [2021-06-05 12:56:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:56:15,316 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-06-05 12:56:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 12:56:15,316 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 [2021-06-05 12:56:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:56:15,317 INFO L225 Difference]: With dead ends: 41 [2021-06-05 12:56:15,317 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 12:56:15,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 518.6ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 12:56:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 12:56:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 12:56:15,318 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) [2021-06-05 12:56:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 12:56:15,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-06-05 12:56:15,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:56:15,318 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 12:56:15,318 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) [2021-06-05 12:56:15,318 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 12:56:15,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 12:56:15,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 12:56:15,320 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 12:56:15,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:56:15 BasicIcfg [2021-06-05 12:56:15,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 12:56:15,322 INFO L168 Benchmark]: Toolchain (without parser) took 7074.74 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 324.5 MB in the beginning and 409.7 MB in the end (delta: -85.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:56:15,323 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory was 343.0 MB in the beginning and 342.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:56:15,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.17 ms. Allocated memory is still 362.8 MB. Free memory was 324.3 MB in the beginning and 344.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:15,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.58 ms. Allocated memory is still 362.8 MB. Free memory was 344.8 MB in the beginning and 342.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:15,323 INFO L168 Benchmark]: Boogie Preprocessor took 24.71 ms. Allocated memory is still 362.8 MB. Free memory was 342.7 MB in the beginning and 341.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:56:15,324 INFO L168 Benchmark]: RCFGBuilder took 362.97 ms. Allocated memory is still 362.8 MB. Free memory was 341.6 MB in the beginning and 323.8 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:15,324 INFO L168 Benchmark]: TraceAbstraction took 6388.69 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 323.8 MB in the beginning and 409.7 MB in the end (delta: -85.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:56:15,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory was 343.0 MB in the beginning and 342.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 263.17 ms. Allocated memory is still 362.8 MB. Free memory was 324.3 MB in the beginning and 344.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.58 ms. Allocated memory is still 362.8 MB. Free memory was 344.8 MB in the beginning and 342.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.71 ms. Allocated memory is still 362.8 MB. Free memory was 342.7 MB in the beginning and 341.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 362.97 ms. Allocated memory is still 362.8 MB. Free memory was 341.6 MB in the beginning and 323.8 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6388.69 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 323.8 MB in the beginning and 409.7 MB in the end (delta: -85.9 MB). There was no memory consumed. 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: 6297.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 11.5ms, AutomataDifference: 4404.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 141 SDtfs, 948 SDslu, 1710 SDs, 0 SdLazy, 2058 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1042.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 4008.2ms 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: 36.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.0ms SsaConstructionTime, 124.2ms SatisfiabilityAnalysisTime, 1558.3ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...