/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:20:02,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:20:02,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:20:03,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:20:03,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:20:03,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:20:03,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:20:03,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:20:03,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:20:03,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:20:03,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:20:03,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:20:03,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:20:03,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:20:03,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:20:03,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:20:03,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:20:03,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:20:03,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:20:03,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:20:03,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:20:03,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:20:03,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:20:03,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:20:03,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:20:03,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 00:20:03,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 00:20:03,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 00:20:03,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 00:20:03,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 00:20:03,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 00:20:03,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 00:20:03,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 00:20:03,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:20:03,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:20:03,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:20:03,104 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-SemanticLbe.epf [2020-11-12 00:20:03,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:20:03,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:20:03,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:20:03,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:20:03,138 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:20:03,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:20:03,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:20:03,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:20:03,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:20:03,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:20:03,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:20:03,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:20:03,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:20:03,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:20:03,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:20:03,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:20:03,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:20:03,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:20:03,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:20:03,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:20:03,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:20:03,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:20:03,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:20:03,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:20:03,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:20:03,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:20:03,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:20:03,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:20:03,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:20:03,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:20:03,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:20:03,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:20:03,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:20:03,576 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:20:03,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i [2020-11-12 00:20:03,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eda6880/5d7fd4820d7447a887e79bfeb03c1213/FLAG69bfe1d3f [2020-11-12 00:20:04,330 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:20:04,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i [2020-11-12 00:20:04,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eda6880/5d7fd4820d7447a887e79bfeb03c1213/FLAG69bfe1d3f [2020-11-12 00:20:04,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eda6880/5d7fd4820d7447a887e79bfeb03c1213 [2020-11-12 00:20:04,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:20:04,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:20:04,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:20:04,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:20:04,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:20:04,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:20:04" (1/1) ... [2020-11-12 00:20:04,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a90317b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:04, skipping insertion in model container [2020-11-12 00:20:04,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:20:04" (1/1) ... [2020-11-12 00:20:04,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:20:04,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:20:05,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:20:05,037 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:20:05,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:20:05,219 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:20:05,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05 WrapperNode [2020-11-12 00:20:05,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:20:05,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:20:05,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:20:05,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:20:05,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:20:05,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:20:05,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:20:05,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:20:05,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (1/1) ... [2020-11-12 00:20:05,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:20:05,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:20:05,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:20:05,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:20:05,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (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 [2020-11-12 00:20:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-11-12 00:20:05,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-11-12 00:20:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-12 00:20:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-12 00:20:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:20:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:20:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:20:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:20:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:20:05,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:20:05,375 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 00:20:05,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:20:05,772 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-12 00:20:05,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:20:05 BoogieIcfgContainer [2020-11-12 00:20:05,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:20:05,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:20:05,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:20:05,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:20:05,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:20:04" (1/3) ... [2020-11-12 00:20:05,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f521062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:20:05, skipping insertion in model container [2020-11-12 00:20:05,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:05" (2/3) ... [2020-11-12 00:20:05,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f521062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:20:05, skipping insertion in model container [2020-11-12 00:20:05,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:20:05" (3/3) ... [2020-11-12 00:20:05,783 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2020-11-12 00:20:05,803 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:20:05,803 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:20:05,807 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:20:05,808 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:20:05,852 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,852 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,856 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,856 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,856 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,856 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,867 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,867 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,869 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,869 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,869 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,881 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,882 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:05,895 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:20:05,909 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 00:20:05,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:20:05,948 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:20:05,948 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:20:05,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:20:05,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:20:05,948 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:20:05,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:20:05,949 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:20:05,965 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:20:05,969 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 70 transitions, 150 flow [2020-11-12 00:20:05,973 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 70 transitions, 150 flow [2020-11-12 00:20:05,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2020-11-12 00:20:06,055 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2020-11-12 00:20:06,056 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:20:06,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 80 events. 5/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2020-11-12 00:20:06,066 INFO L116 LiptonReduction]: Number of co-enabled transitions 942 [2020-11-12 00:20:09,271 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-11-12 00:20:09,483 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-11-12 00:20:09,782 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-11-12 00:20:09,999 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-11-12 00:20:10,505 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-11-12 00:20:10,668 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-12 00:20:11,057 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-11-12 00:20:11,227 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-12 00:20:11,238 INFO L131 LiptonReduction]: Checked pairs total: 907 [2020-11-12 00:20:11,239 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-12 00:20:11,248 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-11-12 00:20:11,261 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 43 states have internal predecessors, (81), 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) [2020-11-12 00:20:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 43 states have internal predecessors, (81), 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) [2020-11-12 00:20:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-12 00:20:11,269 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:20:11,270 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-12 00:20:11,270 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-12 00:20:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:20:11,277 INFO L82 PathProgramCache]: Analyzing trace with hash 284618, now seen corresponding path program 1 times [2020-11-12 00:20:11,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:20:11,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492828697] [2020-11-12 00:20:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:20:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:20:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:20:11,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492828697] [2020-11-12 00:20:11,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:20:11,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:20:11,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036239459] [2020-11-12 00:20:11,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:20:11,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:20:11,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:20:11,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:20:11,520 INFO L87 Difference]: Start difference. First operand has 44 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 43 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2020-11-12 00:20:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:20:11,560 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-11-12 00:20:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:20:11,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2020-11-12 00:20:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:20:11,572 INFO L225 Difference]: With dead ends: 35 [2020-11-12 00:20:11,573 INFO L226 Difference]: Without dead ends: 31 [2020-11-12 00:20:11,574 INFO L749 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 [2020-11-12 00:20:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-12 00:20:11,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-12 00:20:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 30 states have internal predecessors, (51), 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) [2020-11-12 00:20:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-11-12 00:20:11,616 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-11-12 00:20:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:20:11,616 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-11-12 00:20:11,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2020-11-12 00:20:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-11-12 00:20:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-12 00:20:11,617 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:20:11,617 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:20:11,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:20:11,618 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-12 00:20:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:20:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash 821684430, now seen corresponding path program 1 times [2020-11-12 00:20:11,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:20:11,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827300511] [2020-11-12 00:20:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:20:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 00:20:11,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 00:20:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 00:20:11,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 00:20:11,721 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 00:20:11,721 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 00:20:11,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:20:11,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:20:11 BasicIcfg [2020-11-12 00:20:11,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:20:11,756 INFO L168 Benchmark]: Toolchain (without parser) took 7189.58 ms. Allocated memory was 306.2 MB in the beginning and 369.1 MB in the end (delta: 62.9 MB). Free memory was 280.7 MB in the beginning and 305.2 MB in the end (delta: -24.5 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:11,757 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 306.2 MB. Free memory is still 277.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:20:11,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.26 ms. Allocated memory is still 306.2 MB. Free memory was 280.1 MB in the beginning and 270.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:11,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 306.2 MB. Free memory was 270.7 MB in the beginning and 269.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:20:11,759 INFO L168 Benchmark]: Boogie Preprocessor took 29.16 ms. Allocated memory is still 306.2 MB. Free memory was 269.1 MB in the beginning and 267.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:11,760 INFO L168 Benchmark]: RCFGBuilder took 476.57 ms. Allocated memory is still 306.2 MB. Free memory was 267.7 MB in the beginning and 286.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:11,761 INFO L168 Benchmark]: TraceAbstraction took 5978.17 ms. Allocated memory was 306.2 MB in the beginning and 369.1 MB in the end (delta: 62.9 MB). Free memory was 285.7 MB in the beginning and 305.2 MB in the end (delta: -19.5 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:11,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 306.2 MB. Free memory is still 277.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 645.26 ms. Allocated memory is still 306.2 MB. Free memory was 280.1 MB in the beginning and 270.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 306.2 MB. Free memory was 270.7 MB in the beginning and 269.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.16 ms. Allocated memory is still 306.2 MB. Free memory was 269.1 MB in the beginning and 267.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 476.57 ms. Allocated memory is still 306.2 MB. Free memory was 267.7 MB in the beginning and 286.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5978.17 ms. Allocated memory was 306.2 MB in the beginning and 369.1 MB in the end (delta: 62.9 MB). Free memory was 285.7 MB in the beginning and 305.2 MB in the end (delta: -19.5 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 642 VarBasedMoverChecksPositive, 6 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 6 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.2s, 72 PlacesBefore, 18 PlacesAfterwards, 70 TransitionsBefore, 12 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 75 TotalNumberOfCompositions, 907 MoverChecksTotal - CounterExampleResult [Line: 683]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L697] 0 volatile int x; [L698] 0 volatile int n; [L710] 0 pthread_t t1, t2; [L711] 0 int i; [L712] 0 x = 0 [L713] 0 n = __VERIFIER_nondet_int() [L686] COND FALSE 0 !(!cond) [L715] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [n=1, x=0] [L716] 0 i = 0 VAL [n=1, x=0] [L716] COND TRUE 0 i < n [L717] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [arg={0:0}, n=1, x=0] [L704] 2 int t; [L705] 2 t = x [L706] 2 x = t + 1 [L707] 2 return 0; [L689] COND TRUE 1 !(cond) [L683] COND FALSE 1 !(0) [L683] 1 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, arg={0:0}, arg={0:0}, n=1, t=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 7 SDtfs, 7 SDslu, 2 SDs, 0 SdLazy, 9 SolverSat, 0 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=44occurred 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 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...