/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/forkJoinInLoop.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 20:29:12,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 20:29:12,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 20:29:12,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 20:29:12,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 20:29:12,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 20:29:12,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 20:29:12,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 20:29:12,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 20:29:12,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 20:29:12,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 20:29:12,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 20:29:12,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 20:29:12,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 20:29:12,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 20:29:12,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 20:29:12,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 20:29:12,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 20:29:12,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 20:29:12,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 20:29:12,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 20:29:12,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 20:29:12,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 20:29:12,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 20:29:12,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-10 20:29:12,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-10 20:29:12,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-10 20:29:12,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-10 20:29:12,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-10 20:29:12,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-10 20:29:12,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-10 20:29:12,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-10 20:29:12,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-10 20:29:12,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-10 20:29:12,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-10 20:29:12,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-10 20:29:12,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-10 20:29:12,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-10 20:29:12,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 20:29:12,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 20:29:12,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 20:29:12,297 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 [2021-03-10 20:29:12,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 20:29:12,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 20:29:12,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 20:29:12,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 20:29:12,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 20:29:12,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 20:29:12,337 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 20:29:12,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 20:29:12,338 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 20:29:12,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 20:29:12,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 20:29:12,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 20:29:12,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 20:29:12,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 20:29:12,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 20:29:12,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 20:29:12,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 20:29:12,340 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 20:29:12,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 20:29:12,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 20:29:12,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 20:29:12,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 20:29:12,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 20:29:12,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:29:12,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 20:29:12,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 20:29:12,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 20:29:12,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 20:29:12,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 20:29:12,342 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 20:29:12,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 20:29:12,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 20:29:12,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 20:29:12,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 20:29:12,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 20:29:12,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 20:29:12,706 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 20:29:12,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c [2021-03-10 20:29:12,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8253a33/c3004e08d6b949a892ea6cf7aa8c4da4/FLAG047e8656f [2021-03-10 20:29:13,163 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 20:29:13,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c [2021-03-10 20:29:13,164 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-10 20:29:13,164 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-10 20:29:13,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8253a33/c3004e08d6b949a892ea6cf7aa8c4da4/FLAG047e8656f [2021-03-10 20:29:13,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8253a33/c3004e08d6b949a892ea6cf7aa8c4da4 [2021-03-10 20:29:13,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 20:29:13,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 20:29:13,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 20:29:13,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 20:29:13,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 20:29:13,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfba23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13, skipping insertion in model container [2021-03-10 20:29:13,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 20:29:13,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 20:29:13,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:29:13,746 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 20:29:13,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:29:13,820 INFO L208 MainTranslator]: Completed translation [2021-03-10 20:29:13,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13 WrapperNode [2021-03-10 20:29:13,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 20:29:13,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 20:29:13,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 20:29:13,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 20:29:13,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 20:29:13,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 20:29:13,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 20:29:13,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 20:29:13,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... [2021-03-10 20:29:13,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 20:29:13,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 20:29:13,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 20:29:13,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 20:29:13,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:29:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 20:29:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-10 20:29:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-10 20:29:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 20:29:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 20:29:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-10 20:29:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 20:29:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 20:29:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 20:29:13,959 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 20:29:14,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 20:29:14,134 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-10 20:29:14,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:29:14 BoogieIcfgContainer [2021-03-10 20:29:14,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 20:29:14,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 20:29:14,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 20:29:14,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 20:29:14,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 08:29:13" (1/3) ... [2021-03-10 20:29:14,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437c5953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:29:14, skipping insertion in model container [2021-03-10 20:29:14,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:13" (2/3) ... [2021-03-10 20:29:14,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437c5953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:29:14, skipping insertion in model container [2021-03-10 20:29:14,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:29:14" (3/3) ... [2021-03-10 20:29:14,141 INFO L111 eAbstractionObserver]: Analyzing ICFG forkJoinInLoop.c [2021-03-10 20:29:14,146 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 20:29:14,146 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 20:29:14,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 20:29:14,150 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 20:29:14,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,169 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,169 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,170 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,170 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,170 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,171 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,172 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,173 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,173 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,173 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,173 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:14,178 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-10 20:29:14,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-10 20:29:14,209 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 20:29:14,209 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 20:29:14,209 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 20:29:14,209 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 20:29:14,210 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 20:29:14,210 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 20:29:14,210 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 20:29:14,210 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 20:29:14,234 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 46 transitions, 100 flow [2021-03-10 20:29:14,243 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 59 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-10 20:29:14,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:14,250 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:14,251 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:29:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:14,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1741648071, now seen corresponding path program 1 times [2021-03-10 20:29:14,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:14,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627672776] [2021-03-10 20:29:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:14,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627672776] [2021-03-10 20:29:14,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:29:14,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 20:29:14,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226298683] [2021-03-10 20:29:14,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-10 20:29:14,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:29:14,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-10 20:29:14,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-10 20:29:14,485 INFO L87 Difference]: Start difference. First operand has 59 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 58 states have internal predecessors, (75), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:14,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:29:14,498 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-03-10 20:29:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-10 20:29:14,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-03-10 20:29:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:29:14,506 INFO L225 Difference]: With dead ends: 51 [2021-03-10 20:29:14,506 INFO L226 Difference]: Without dead ends: 51 [2021-03-10 20:29:14,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-10 20:29:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-03-10 20:29:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-03-10 20:29:14,543 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) [2021-03-10 20:29:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-03-10 20:29:14,547 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 12 [2021-03-10 20:29:14,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:29:14,548 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-03-10 20:29:14,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:14,548 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-03-10 20:29:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 20:29:14,549 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:14,550 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:14,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 20:29:14,550 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:29:14,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:14,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1313432728, now seen corresponding path program 1 times [2021-03-10 20:29:14,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:14,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713774844] [2021-03-10 20:29:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:14,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713774844] [2021-03-10 20:29:14,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:29:14,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 20:29:14,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183867993] [2021-03-10 20:29:14,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 20:29:14,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:29:14,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 20:29:14,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 20:29:14,662 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:29:14,719 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2021-03-10 20:29:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-10 20:29:14,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-03-10 20:29:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:29:14,721 INFO L225 Difference]: With dead ends: 55 [2021-03-10 20:29:14,721 INFO L226 Difference]: Without dead ends: 55 [2021-03-10 20:29:14,722 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 20:29:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-03-10 20:29:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-03-10 20:29:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-03-10 20:29:14,740 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 14 [2021-03-10 20:29:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:29:14,740 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-03-10 20:29:14,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-03-10 20:29:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 20:29:14,745 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:14,746 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:14,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 20:29:14,749 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:29:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1967712229, now seen corresponding path program 1 times [2021-03-10 20:29:14,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:14,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151590453] [2021-03-10 20:29:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:14,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:14,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151590453] [2021-03-10 20:29:14,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324799665] [2021-03-10 20:29:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 20:29:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:15,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 20:29:15,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 20:29:15,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-03-10 20:29:15,078 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 20:29:15,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 20:29:15,080 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 20:29:15,080 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-03-10 20:29:15,121 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-03-10 20:29:15,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-03-10 20:29:15,130 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 20:29:15,132 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 20:29:15,132 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 20:29:15,133 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2021-03-10 20:29:15,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-03-10 20:29:15,238 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 20:29:15,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 20:29:15,256 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-03-10 20:29:15,256 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2021-03-10 20:29:15,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2021-03-10 20:29:15,701 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 20:29:15,707 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 20:29:15,711 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-03-10 20:29:15,711 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:19 [2021-03-10 20:29:15,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-03-10 20:29:15,780 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 20:29:15,788 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 20:29:15,789 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-03-10 20:29:15,789 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2021-03-10 20:29:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:15,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 20:29:15,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-03-10 20:29:15,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442764413] [2021-03-10 20:29:15,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 20:29:15,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:29:15,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 20:29:15,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-03-10 20:29:15,796 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:29:16,135 INFO L93 Difference]: Finished difference Result 125 states and 170 transitions. [2021-03-10 20:29:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 20:29:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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 37 [2021-03-10 20:29:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:29:16,137 INFO L225 Difference]: With dead ends: 125 [2021-03-10 20:29:16,137 INFO L226 Difference]: Without dead ends: 125 [2021-03-10 20:29:16,138 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 367.5ms TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-03-10 20:29:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-03-10 20:29:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2021-03-10 20:29:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 90 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 121 transitions. [2021-03-10 20:29:16,145 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 121 transitions. Word has length 37 [2021-03-10 20:29:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:29:16,145 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 121 transitions. [2021-03-10 20:29:16,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:16,146 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 121 transitions. [2021-03-10 20:29:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-03-10 20:29:16,147 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:16,147 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:16,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-03-10 20:29:16,363 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:29:16,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:16,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2013134328, now seen corresponding path program 2 times [2021-03-10 20:29:16,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:16,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932521636] [2021-03-10 20:29:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-10 20:29:16,377 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-10 20:29:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-10 20:29:16,394 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-10 20:29:16,429 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-10 20:29:16,429 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-10 20:29:16,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 20:29:16,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 08:29:16 BasicIcfg [2021-03-10 20:29:16,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 20:29:16,485 INFO L168 Benchmark]: Toolchain (without parser) took 2926.68 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 234.6 MB in the beginning and 338.3 MB in the end (delta: -103.7 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:16,486 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:29:16,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.17 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 233.7 MB in the beginning and 340.7 MB in the end (delta: -107.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:16,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.98 ms. Allocated memory is still 356.5 MB. Free memory was 340.2 MB in the beginning and 339.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:16,486 INFO L168 Benchmark]: Boogie Preprocessor took 34.70 ms. Allocated memory is still 356.5 MB. Free memory was 339.1 MB in the beginning and 338.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:29:16,486 INFO L168 Benchmark]: RCFGBuilder took 247.93 ms. Allocated memory is still 356.5 MB. Free memory was 338.0 MB in the beginning and 322.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:16,486 INFO L168 Benchmark]: TraceAbstraction took 2348.64 ms. Allocated memory is still 356.5 MB. Free memory was 322.4 MB in the beginning and 338.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:16,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 257.17 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 233.7 MB in the beginning and 340.7 MB in the end (delta: -107.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.98 ms. Allocated memory is still 356.5 MB. Free memory was 340.2 MB in the beginning and 339.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 34.70 ms. Allocated memory is still 356.5 MB. Free memory was 339.1 MB in the beginning and 338.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 247.93 ms. Allocated memory is still 356.5 MB. Free memory was 338.0 MB in the beginning and 322.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2348.64 ms. Allocated memory is still 356.5 MB. Free memory was 322.4 MB in the beginning and 338.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L19] 0 pthread_t thread_id; [L21] 0 int x = 1; [L23] EXPR 0 \read(x) [L23] COND TRUE 0 x < 3 [L24] FCALL, FORK 0 pthread_create(&thread_id, NULL, foo, &x) VAL [i={5:0}] [L15] 1 int y = 4; VAL [i={5:0}, i={5:0}, y=4] [L25] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L26] 0 \read(thread_id) VAL [i={5:0}, i={5:0}, y=4] [L26] FCALL, JOIN 1 pthread_join(thread_id, NULL) VAL [i={5:0}, i={5:0}, y=4] [L27] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] 0 x++ VAL [i={5:0}, i={5:0}, y=4] [L23] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L23] COND TRUE 0 x < 3 VAL [i={5:0}, i={5:0}, y=4] [L24] FCALL, FORK 0 pthread_create(&thread_id, NULL, foo, &x) VAL [i={5:0}] [L15] 1 int y = 4; VAL [i={5:0}, i={5:0}, y=4] [L25] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L26] 0 \read(thread_id) VAL [i={5:0}, i={5:0}, y=4] [L26] FCALL, JOIN 1 pthread_join(thread_id, NULL) VAL [i={5:0}, i={5:0}, y=4] [L27] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] 0 x++ VAL [i={5:0}, i={5:0}, y=4] [L23] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L23] COND FALSE 0 !(x < 3) VAL [i={5:0}, i={5:0}, y=4] [L30] 0 CodeAnnotStmt[Assertion] VAL [i={5:0}, i={5:0}, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2223.2ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 10.4ms, AutomataDifference: 445.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 94 SDtfs, 224 SDslu, 255 SDs, 0 SdLazy, 160 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 398.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 53.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.0ms SsaConstructionTime, 107.1ms SatisfiabilityAnalysisTime, 1070.1ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 20 QuantifiedInterpolants, 781 SizeOfPredicates, 7 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...