/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:03:17,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:03:17,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:03:17,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:03:17,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:03:17,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:03:17,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:03:17,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:03:17,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:03:17,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:03:17,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:03:17,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:03:17,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:03:17,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:03:17,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:03:17,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:03:17,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:03:17,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:03:17,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:03:17,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:03:17,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:03:17,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:03:17,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:03:17,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:03:17,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:03:17,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:03:17,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:03:17,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:03:17,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:03:17,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:03:17,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:03:17,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:03:17,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:03:17,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:03:17,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:03:17,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:03:17,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 23:03:17,760 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:03:17,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:03:17,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:03:17,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:03:17,762 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:03:17,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:03:17,763 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:03:17,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:03:17,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:03:17,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:03:17,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:03:17,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:03:17,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:03:17,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:03:17,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:03:17,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:03:17,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:03:17,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:03:17,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:03:17,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:03:17,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:03:17,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:03:17,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:03:17,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 23:03:17,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:03:17,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:03:17,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:03:17,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:03:17,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 23:03:17,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 23:03:18,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:03:18,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:03:18,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:03:18,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:03:18,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:03:18,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2020-10-05 23:03:18,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16e89adb/7910ec15cc8849d393e0a4d7abd393d3/FLAG041ceeebe [2020-10-05 23:03:18,609 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:03:18,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2020-10-05 23:03:18,610 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:03:18,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16e89adb/7910ec15cc8849d393e0a4d7abd393d3/FLAG041ceeebe [2020-10-05 23:03:19,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16e89adb/7910ec15cc8849d393e0a4d7abd393d3 [2020-10-05 23:03:19,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:03:19,019 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:03:19,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:03:19,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:03:19,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:03:19,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9d9683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19, skipping insertion in model container [2020-10-05 23:03:19,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:03:19,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:03:19,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:03:19,236 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:03:19,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:03:19,350 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:03:19,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19 WrapperNode [2020-10-05 23:03:19,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:03:19,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:03:19,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:03:19,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:03:19,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:03:19,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:03:19,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:03:19,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:03:19,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (1/1) ... [2020-10-05 23:03:19,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:03:19,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:03:19,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:03:19,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:03:19,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (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 [2020-10-05 23:03:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:03:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 23:03:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 23:03:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-05 23:03:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-05 23:03:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:03:19,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:03:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:03:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:03:19,483 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:03:19,694 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:03:19,694 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-05 23:03:19,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:03:19 BoogieIcfgContainer [2020-10-05 23:03:19,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:03:19,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:03:19,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:03:19,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:03:19,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:03:19" (1/3) ... [2020-10-05 23:03:19,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6a7246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:03:19, skipping insertion in model container [2020-10-05 23:03:19,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:19" (2/3) ... [2020-10-05 23:03:19,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6a7246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:03:19, skipping insertion in model container [2020-10-05 23:03:19,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:03:19" (3/3) ... [2020-10-05 23:03:19,733 INFO L109 eAbstractionObserver]: Analyzing ICFG predecessorInAtomicBlockBug.c [2020-10-05 23:03:19,749 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:03:19,749 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:03:19,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:03:19,759 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:03:19,792 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,792 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,793 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,793 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,795 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,795 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,799 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,799 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,800 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,800 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:19,817 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 23:03:19,834 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:03:19,834 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:03:19,835 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:03:19,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:03:19,835 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:03:19,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:03:19,835 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:03:19,835 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:03:19,847 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 22 transitions, 49 flow [2020-10-05 23:03:19,849 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 49 flow [2020-10-05 23:03:19,874 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2020-10-05 23:03:19,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:03:19,877 INFO L80 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-05 23:03:19,878 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 49 flow [2020-10-05 23:03:19,888 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2020-10-05 23:03:19,888 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:03:19,889 INFO L80 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-05 23:03:19,890 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 70 [2020-10-05 23:03:19,891 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:03:20,355 INFO L206 etLargeBlockEncoding]: Checked pairs total: 74 [2020-10-05 23:03:20,355 INFO L214 etLargeBlockEncoding]: Total number of compositions: 16 [2020-10-05 23:03:20,360 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 7 transitions, 19 flow [2020-10-05 23:03:20,370 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 11 states. [2020-10-05 23:03:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-05 23:03:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-05 23:03:20,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:20,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-05 23:03:20,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:03:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:20,388 INFO L82 PathProgramCache]: Analyzing trace with hash 94820, now seen corresponding path program 1 times [2020-10-05 23:03:20,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:20,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954526873] [2020-10-05 23:03:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:20,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954526873] [2020-10-05 23:03:20,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:20,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 23:03:20,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622963177] [2020-10-05 23:03:20,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:03:20,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:20,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:03:20,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:03:20,588 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-10-05 23:03:20,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:20,624 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-10-05 23:03:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:03:20,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-05 23:03:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:20,637 INFO L225 Difference]: With dead ends: 12 [2020-10-05 23:03:20,638 INFO L226 Difference]: Without dead ends: 7 [2020-10-05 23:03:20,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:03:20,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-05 23:03:20,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-05 23:03:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-05 23:03:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-10-05 23:03:20,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2020-10-05 23:03:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:20,676 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-10-05 23:03:20,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:03:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-10-05 23:03:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:03:20,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:20,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:03:20,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:03:20,678 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:03:20,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:20,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2939628, now seen corresponding path program 1 times [2020-10-05 23:03:20,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:20,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533799332] [2020-10-05 23:03:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:03:20,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:03:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:03:20,716 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:03:20,740 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:03:20,741 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:03:20,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:03:20,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:03:20 BasicIcfg [2020-10-05 23:03:20,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:03:20,772 INFO L168 Benchmark]: Toolchain (without parser) took 1752.62 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 101.5 MB in the beginning and 199.8 MB in the end (delta: -98.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-05 23:03:20,773 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:03:20,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.43 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 182.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:20,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.71 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:20,776 INFO L168 Benchmark]: Boogie Preprocessor took 22.36 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 178.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:20,777 INFO L168 Benchmark]: RCFGBuilder took 285.44 ms. Allocated memory is still 203.9 MB. Free memory was 178.9 MB in the beginning and 166.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:20,778 INFO L168 Benchmark]: TraceAbstraction took 1056.01 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 166.0 MB in the beginning and 199.8 MB in the end (delta: -33.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-05 23:03:20,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.43 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 182.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.71 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.36 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 178.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.44 ms. Allocated memory is still 203.9 MB. Free memory was 178.9 MB in the beginning and 166.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1056.01 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 166.0 MB in the beginning and 199.8 MB in the end (delta: -33.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 26 ProgramPointsBefore, 11 ProgramPointsAfterwards, 22 TransitionsBefore, 7 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 33 VarBasedMoverChecksPositive, 6 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 74 CheckedPairsTotal, 16 TotalNumberOfCompositions - CounterExampleResult [Line: 19]: assertion can be violated assertion can be violated We found a FailurePath: [L16] 0 int x = 0; [L24] 0 pthread_t threadId; [L25] FCALL, FORK 0 pthread_create(&threadId, NULL, & foo, NULL) VAL [arg={0:0}, x=0] [L27] 0 x = x - 1 VAL [arg={0:0}, x=-1] [L19] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 4 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...