/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 20:29:43,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 20:29:43,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 20:29:43,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 20:29:43,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 20:29:43,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 20:29:43,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 20:29:43,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 20:29:43,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 20:29:43,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 20:29:43,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 20:29:43,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-06-05 20:29:44,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 20:29:44,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 20:29:44,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 20:29:44,027 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.epf [2021-06-05 20:29:44,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 20:29:44,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 20:29:44,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 20:29:44,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 20:29:44,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 20:29:44,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 20:29:44,067 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 20:29:44,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 20:29:44,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 20:29:44,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 20:29:44,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 20:29:44,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 20:29:44,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 20:29:44,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 20:29:44,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 20:29:44,069 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 20:29:44,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 20:29:44,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 20:29:44,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 20:29:44,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 20:29:44,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 20:29:44,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 20:29:44,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 20:29:44,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:29:44,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 20:29:44,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 20:29:44,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 20:29:44,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 20:29:44,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 20:29:44,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 20:29:44,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 20:29:44,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 20:29:44,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 20:29:44,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 20:29:44,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 20:29:44,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 20:29:44,423 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 20:29:44,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c [2021-06-05 20:29:44,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a198e8cc/fff6ff442034415fb9f9373ca0d18157/FLAG968245262 [2021-06-05 20:29:44,883 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 20:29:44,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c [2021-06-05 20:29:44,884 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 20:29:44,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a198e8cc/fff6ff442034415fb9f9373ca0d18157/FLAG968245262 [2021-06-05 20:29:44,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a198e8cc/fff6ff442034415fb9f9373ca0d18157 [2021-06-05 20:29:44,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 20:29:44,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 20:29:44,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 20:29:44,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 20:29:44,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 20:29:44,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:29:44" (1/1) ... [2021-06-05 20:29:44,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2008b2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:44, skipping insertion in model container [2021-06-05 20:29:44,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:29:44" (1/1) ... [2021-06-05 20:29:44,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 20:29:44,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 20:29:45,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:29:45,114 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 20:29:45,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:29:45,135 INFO L208 MainTranslator]: Completed translation [2021-06-05 20:29:45,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45 WrapperNode [2021-06-05 20:29:45,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 20:29:45,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 20:29:45,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 20:29:45,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 20:29:45,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 20:29:45,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 20:29:45,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 20:29:45,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 20:29:45,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (1/1) ... [2021-06-05 20:29:45,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 20:29:45,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 20:29:45,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 20:29:45,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 20:29:45,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (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 20:29:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 20:29:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 20:29:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 20:29:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-05 20:29:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-05 20:29:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 20:29:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 20:29:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 20:29:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 20:29:45,286 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 20:29:45,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 20:29:45,567 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-05 20:29:45,567 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: fooEXIT is neither atomic block end nor error location. [2021-06-05 20:29:45,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:29:45 BoogieIcfgContainer [2021-06-05 20:29:45,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 20:29:45,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 20:29:45,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 20:29:45,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 20:29:45,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 08:29:44" (1/3) ... [2021-06-05 20:29:45,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f36b52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:29:45, skipping insertion in model container [2021-06-05 20:29:45,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:29:45" (2/3) ... [2021-06-05 20:29:45,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f36b52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:29:45, skipping insertion in model container [2021-06-05 20:29:45,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:29:45" (3/3) ... [2021-06-05 20:29:45,574 INFO L111 eAbstractionObserver]: Analyzing ICFG 07-return-before-end.c [2021-06-05 20:29:45,578 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 20:29:45,578 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 20:29:45,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 20:29:45,579 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 20:29:45,627 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,627 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,627 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,627 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,628 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,628 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,628 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,628 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,628 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,628 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,629 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,629 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,629 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,629 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,629 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,629 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,631 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,631 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,631 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,631 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:29:45,637 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 20:29:45,655 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 20:29:45,680 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:29:45,680 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:29:45,681 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:29:45,681 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:29:45,681 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:29:45,681 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:29:45,681 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:29:45,681 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 20:29:45,691 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 57 flow [2021-06-05 20:29:45,704 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52 states, 50 states have (on average 1.76) internal successors, (88), 51 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 20:29:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 50 states have (on average 1.76) internal successors, (88), 51 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 20:29:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 20:29:45,713 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:29:45,714 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:29:45,714 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:29:45,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:29:45,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1509984702, now seen corresponding path program 1 times [2021-06-05 20:29:45,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:29:45,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876652004] [2021-06-05 20:29:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:29:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:29:45,853 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 20:29:45,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:29:45,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876652004] [2021-06-05 20:29:45,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876652004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:29:45,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:29:45,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 20:29:45,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411151789] [2021-06-05 20:29:45,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:29:45,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:29:45,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:29:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:29:45,870 INFO L87 Difference]: Start difference. First operand has 52 states, 50 states have (on average 1.76) internal successors, (88), 51 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) Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 20:29:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:29:45,893 INFO L93 Difference]: Finished difference Result 58 states and 89 transitions. [2021-06-05 20:29:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:29:45,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-06-05 20:29:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:29:45,900 INFO L225 Difference]: With dead ends: 58 [2021-06-05 20:29:45,900 INFO L226 Difference]: Without dead ends: 25 [2021-06-05 20:29:45,901 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:29:45,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-06-05 20:29:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-06-05 20:29:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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 20:29:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-06-05 20:29:45,926 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 16 [2021-06-05 20:29:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:29:45,927 INFO L482 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-06-05 20:29:45,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 20:29:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-06-05 20:29:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 20:29:45,928 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:29:45,928 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:29:45,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 20:29:45,928 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:29:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:29:45,929 INFO L82 PathProgramCache]: Analyzing trace with hash -603643428, now seen corresponding path program 1 times [2021-06-05 20:29:45,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:29:45,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717312812] [2021-06-05 20:29:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:29:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:29:45,960 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 20:29:45,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:29:45,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717312812] [2021-06-05 20:29:45,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717312812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:29:45,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:29:45,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:29:45,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724807957] [2021-06-05 20:29:45,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:29:45,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:29:45,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:29:45,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:29:45,964 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 20:29:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:29:45,969 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-06-05 20:29:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:29:45,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-06-05 20:29:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:29:45,971 INFO L225 Difference]: With dead ends: 25 [2021-06-05 20:29:45,971 INFO L226 Difference]: Without dead ends: 23 [2021-06-05 20:29:45,971 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:29:45,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-06-05 20:29:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-06-05 20:29:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 20:29:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-06-05 20:29:45,975 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-06-05 20:29:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:29:45,975 INFO L482 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-06-05 20:29:45,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 20:29:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-06-05 20:29:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 20:29:45,976 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:29:45,976 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:29:45,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 20:29:45,977 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:29:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:29:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash -603552288, now seen corresponding path program 2 times [2021-06-05 20:29:45,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:29:45,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310624992] [2021-06-05 20:29:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:29:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:29:46,034 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 20:29:46,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:29:46,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310624992] [2021-06-05 20:29:46,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310624992] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:29:46,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:29:46,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:29:46,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711375705] [2021-06-05 20:29:46,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 20:29:46,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:29:46,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 20:29:46,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 20:29:46,037 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 20:29:46,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:29:46,068 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-06-05 20:29:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 20:29:46,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-06-05 20:29:46,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:29:46,069 INFO L225 Difference]: With dead ends: 22 [2021-06-05 20:29:46,069 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 20:29:46,070 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 20:29:46,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 20:29:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 20:29:46,070 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 20:29:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 20:29:46,071 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-06-05 20:29:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:29:46,071 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 20:29:46,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 20:29:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 20:29:46,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 20:29:46,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 20:29:46,074 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 20:29:46,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:29:46 BasicIcfg [2021-06-05 20:29:46,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 20:29:46,077 INFO L168 Benchmark]: Toolchain (without parser) took 1140.63 ms. Allocated memory is still 358.6 MB. Free memory was 321.1 MB in the beginning and 290.1 MB in the end (delta: 31.0 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:29:46,077 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 358.6 MB. Free memory was 339.5 MB in the beginning and 339.4 MB in the end (delta: 71.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:29:46,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.20 ms. Allocated memory is still 358.6 MB. Free memory was 320.9 MB in the beginning and 337.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-06-05 20:29:46,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.78 ms. Allocated memory is still 358.6 MB. Free memory was 337.7 MB in the beginning and 341.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:29:46,079 INFO L168 Benchmark]: Boogie Preprocessor took 21.29 ms. Allocated memory is still 358.6 MB. Free memory was 341.5 MB in the beginning and 340.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:29:46,080 INFO L168 Benchmark]: RCFGBuilder took 356.88 ms. Allocated memory is still 358.6 MB. Free memory was 340.2 MB in the beginning and 323.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 20:29:46,080 INFO L168 Benchmark]: TraceAbstraction took 505.96 ms. Allocated memory is still 358.6 MB. Free memory was 323.6 MB in the beginning and 290.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-06-05 20:29:46,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 358.6 MB. Free memory was 339.5 MB in the beginning and 339.4 MB in the end (delta: 71.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 198.20 ms. Allocated memory is still 358.6 MB. Free memory was 320.9 MB in the beginning and 337.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.78 ms. Allocated memory is still 358.6 MB. Free memory was 337.7 MB in the beginning and 341.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.29 ms. Allocated memory is still 358.6 MB. Free memory was 341.5 MB in the beginning and 340.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 356.88 ms. Allocated memory is still 358.6 MB. Free memory was 340.2 MB in the beginning and 323.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 505.96 ms. Allocated memory is still 358.6 MB. Free memory was 323.6 MB in the beginning and 290.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 31 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 393.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.5ms, AutomataDifference: 84.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 19 SDslu, 31 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.0ms SsaConstructionTime, 45.1ms SatisfiabilityAnalysisTime, 101.0ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...