/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-19 05:39:26,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-19 05:39:26,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-19 05:39:26,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-19 05:39:26,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-19 05:39:26,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-19 05:39:26,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-19 05:39:26,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-19 05:39:26,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-19 05:39:26,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-19 05:39:26,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-19 05:39:26,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-19 05:39:26,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-19 05:39:26,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-19 05:39:26,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-19 05:39:26,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-19 05:39:26,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-19 05:39:26,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-19 05:39:26,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-19 05:39:26,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-19 05:39:26,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-19 05:39:26,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-19 05:39:26,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-19 05:39:26,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-19 05:39:26,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-19 05:39:26,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-19 05:39:26,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-19 05:39:26,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-19 05:39:26,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-19 05:39:26,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-19 05:39:26,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-19 05:39:26,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-19 05:39:26,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-19 05:39:26,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-19 05:39:26,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-19 05:39:26,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-19 05:39:26,099 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 [2019-12-19 05:39:26,131 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-19 05:39:26,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-19 05:39:26,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-19 05:39:26,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-19 05:39:26,137 INFO L138 SettingsManager]: * Use SBE=true [2019-12-19 05:39:26,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-19 05:39:26,137 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-19 05:39:26,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-19 05:39:26,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-19 05:39:26,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-19 05:39:26,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-19 05:39:26,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-19 05:39:26,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-19 05:39:26,141 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-19 05:39:26,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-19 05:39:26,143 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-19 05:39:26,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-19 05:39:26,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-19 05:39:26,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-19 05:39:26,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-19 05:39:26,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-19 05:39:26,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-19 05:39:26,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-19 05:39:26,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-19 05:39:26,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-19 05:39:26,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-19 05:39:26,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-19 05:39:26,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-19 05:39:26,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-19 05:39:26,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-19 05:39:26,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-19 05:39:26,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-19 05:39:26,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-19 05:39:26,430 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-19 05:39:26,430 INFO L275 PluginConnector]: CDTParser initialized [2019-12-19 05:39:26,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i [2019-12-19 05:39:26,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f1f909b/68cc80904cfb4297bb23f96c5025a384/FLAGe03e29124 [2019-12-19 05:39:27,095 INFO L306 CDTParser]: Found 1 translation units. [2019-12-19 05:39:27,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i [2019-12-19 05:39:27,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f1f909b/68cc80904cfb4297bb23f96c5025a384/FLAGe03e29124 [2019-12-19 05:39:27,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f1f909b/68cc80904cfb4297bb23f96c5025a384 [2019-12-19 05:39:27,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-19 05:39:27,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-19 05:39:27,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-19 05:39:27,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-19 05:39:27,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-19 05:39:27,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:39:27" (1/1) ... [2019-12-19 05:39:27,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ca0f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:27, skipping insertion in model container [2019-12-19 05:39:27,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:39:27" (1/1) ... [2019-12-19 05:39:27,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-19 05:39:27,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-19 05:39:27,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-19 05:39:27,918 INFO L203 MainTranslator]: Completed pre-run [2019-12-19 05:39:27,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-19 05:39:28,088 INFO L208 MainTranslator]: Completed translation [2019-12-19 05:39:28,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28 WrapperNode [2019-12-19 05:39:28,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-19 05:39:28,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-19 05:39:28,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-19 05:39:28,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-19 05:39:28,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-19 05:39:28,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-19 05:39:28,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-19 05:39:28,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-19 05:39:28,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (1/1) ... [2019-12-19 05:39:28,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-19 05:39:28,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-19 05:39:28,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-19 05:39:28,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-19 05:39:28,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (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 [2019-12-19 05:39:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-12-19 05:39:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-12-19 05:39:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-19 05:39:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-19 05:39:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-19 05:39:28,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-19 05:39:28,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-19 05:39:28,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-19 05:39:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-19 05:39:28,258 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-19 05:39:28,587 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-19 05:39:28,587 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-19 05:39:28,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:39:28 BoogieIcfgContainer [2019-12-19 05:39:28,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-19 05:39:28,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-19 05:39:28,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-19 05:39:28,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-19 05:39:28,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:39:27" (1/3) ... [2019-12-19 05:39:28,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adc318e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:39:28, skipping insertion in model container [2019-12-19 05:39:28,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:28" (2/3) ... [2019-12-19 05:39:28,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adc318e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:39:28, skipping insertion in model container [2019-12-19 05:39:28,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:39:28" (3/3) ... [2019-12-19 05:39:28,597 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2019-12-19 05:39:28,607 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-19 05:39:28,608 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-19 05:39:28,614 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-19 05:39:28,615 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-19 05:39:28,644 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,645 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,645 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,645 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,646 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,646 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,647 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,647 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,647 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,648 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,648 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,649 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,649 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,649 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,650 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,650 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,650 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,651 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,651 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,651 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,652 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,656 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,656 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,657 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,657 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,657 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,663 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,664 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,664 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,664 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,664 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,665 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:28,685 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-19 05:39:28,702 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-19 05:39:28,702 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-19 05:39:28,703 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-19 05:39:28,703 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-19 05:39:28,703 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-19 05:39:28,703 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-19 05:39:28,703 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-19 05:39:28,703 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-19 05:39:28,713 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 56 transitions [2019-12-19 05:39:28,799 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1270 states. [2019-12-19 05:39:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states. [2019-12-19 05:39:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-19 05:39:28,811 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:39:28,812 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:39:28,813 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-19 05:39:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:39:28,820 INFO L82 PathProgramCache]: Analyzing trace with hash -215208478, now seen corresponding path program 1 times [2019-12-19 05:39:28,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:39:28,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705219870] [2019-12-19 05:39:28,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:39:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:39:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:39:29,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705219870] [2019-12-19 05:39:29,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-19 05:39:29,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-19 05:39:29,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725024434] [2019-12-19 05:39:29,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-19 05:39:29,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:39:29,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-19 05:39:29,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-19 05:39:29,172 INFO L87 Difference]: Start difference. First operand 1270 states. Second operand 6 states. [2019-12-19 05:39:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:39:29,466 INFO L93 Difference]: Finished difference Result 1404 states and 3559 transitions. [2019-12-19 05:39:29,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-19 05:39:29,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-12-19 05:39:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:39:29,494 INFO L225 Difference]: With dead ends: 1404 [2019-12-19 05:39:29,494 INFO L226 Difference]: Without dead ends: 932 [2019-12-19 05:39:29,496 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-19 05:39:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2019-12-19 05:39:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 860. [2019-12-19 05:39:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2019-12-19 05:39:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2152 transitions. [2019-12-19 05:39:29,619 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2152 transitions. Word has length 26 [2019-12-19 05:39:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:39:29,620 INFO L462 AbstractCegarLoop]: Abstraction has 860 states and 2152 transitions. [2019-12-19 05:39:29,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-19 05:39:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2152 transitions. [2019-12-19 05:39:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-19 05:39:29,623 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:39:29,623 INFO L411 BasicCegarLoop]: trace histogram [2, 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] [2019-12-19 05:39:29,624 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-19 05:39:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:39:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1343742441, now seen corresponding path program 1 times [2019-12-19 05:39:29,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:39:29,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442877103] [2019-12-19 05:39:29,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:39:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-19 05:39:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-19 05:39:29,744 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-19 05:39:29,744 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-19 05:39:29,746 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-19 05:39:29,746 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-19 05:39:29,758 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,758 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,759 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,759 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,759 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,759 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,760 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,760 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,760 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,761 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,763 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,764 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,764 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,764 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,764 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,764 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,765 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,765 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,767 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,768 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,768 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,768 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,768 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,769 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,769 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,769 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,769 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,769 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,770 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,770 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,770 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,771 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,771 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,771 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,771 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,771 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,772 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,772 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,772 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,772 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,772 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,773 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,773 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,773 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,774 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,774 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,774 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,776 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,776 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,776 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,777 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,777 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,783 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,784 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,784 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,784 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,784 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,784 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,787 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,788 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,788 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,788 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,788 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:39:29,791 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-19 05:39:29,791 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-19 05:39:29,791 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-19 05:39:29,792 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-19 05:39:29,792 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-19 05:39:29,792 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-19 05:39:29,792 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-19 05:39:29,792 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-19 05:39:29,792 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-19 05:39:29,798 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 74 transitions [2019-12-19 05:39:30,321 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 9040 states. [2019-12-19 05:39:30,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9040 states. [2019-12-19 05:39:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-19 05:39:30,323 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:39:30,323 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:39:30,325 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:39:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:39:30,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1762351181, now seen corresponding path program 1 times [2019-12-19 05:39:30,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:39:30,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293176253] [2019-12-19 05:39:30,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:39:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:39:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:39:30,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293176253] [2019-12-19 05:39:30,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-19 05:39:30,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-19 05:39:30,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259813945] [2019-12-19 05:39:30,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-19 05:39:30,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:39:30,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-19 05:39:30,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-19 05:39:30,501 INFO L87 Difference]: Start difference. First operand 9040 states. Second operand 6 states. [2019-12-19 05:39:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:39:30,806 INFO L93 Difference]: Finished difference Result 11820 states and 39857 transitions. [2019-12-19 05:39:30,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-19 05:39:30,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-12-19 05:39:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:39:30,889 INFO L225 Difference]: With dead ends: 11820 [2019-12-19 05:39:30,889 INFO L226 Difference]: Without dead ends: 8204 [2019-12-19 05:39:30,890 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-19 05:39:30,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2019-12-19 05:39:31,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 7349. [2019-12-19 05:39:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7349 states. [2019-12-19 05:39:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7349 states to 7349 states and 24689 transitions. [2019-12-19 05:39:31,271 INFO L78 Accepts]: Start accepts. Automaton has 7349 states and 24689 transitions. Word has length 26 [2019-12-19 05:39:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:39:31,271 INFO L462 AbstractCegarLoop]: Abstraction has 7349 states and 24689 transitions. [2019-12-19 05:39:31,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-19 05:39:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 7349 states and 24689 transitions. [2019-12-19 05:39:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-19 05:39:31,275 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:39:31,275 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:39:31,275 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:39:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:39:31,276 INFO L82 PathProgramCache]: Analyzing trace with hash -787891314, now seen corresponding path program 1 times [2019-12-19 05:39:31,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:39:31,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581449421] [2019-12-19 05:39:31,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:39:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-19 05:39:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-19 05:39:31,325 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-19 05:39:31,325 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-19 05:39:31,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 05:39:31 BasicIcfg [2019-12-19 05:39:31,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-19 05:39:31,415 INFO L168 Benchmark]: Toolchain (without parser) took 4027.64 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 100.9 MB in the beginning and 121.7 MB in the end (delta: -20.9 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2019-12-19 05:39:31,416 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-19 05:39:31,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.63 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 162.6 MB in the end (delta: -62.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2019-12-19 05:39:31,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.95 ms. Allocated memory is still 202.9 MB. Free memory was 162.6 MB in the beginning and 160.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-12-19 05:39:31,420 INFO L168 Benchmark]: Boogie Preprocessor took 25.35 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-19 05:39:31,423 INFO L168 Benchmark]: RCFGBuilder took 397.86 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 138.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2019-12-19 05:39:31,425 INFO L168 Benchmark]: TraceAbstraction took 2817.39 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 138.9 MB in the beginning and 121.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2019-12-19 05:39:31,436 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 705.63 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 162.6 MB in the end (delta: -62.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 75.95 ms. Allocated memory is still 202.9 MB. Free memory was 162.6 MB in the beginning and 160.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.35 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 397.86 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 138.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2817.39 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 138.9 MB in the beginning and 121.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 676]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L683] 0 volatile int x; VAL [x=0] [L684] 0 volatile int n; VAL [n=0, x=0] [L696] 0 pthread_t t1, t2; VAL [n=0, x=0] [L697] 0 int i; VAL [n=0, x=0] [L698] 0 x = 0 VAL [n=0, x=0] [L699] 0 n = __VERIFIER_nondet_int() VAL [n=1, x=0] [L701] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [n=1, x=0] [L702] 0 i = 0 VAL [n=1, x=0] [L702] COND TRUE 0 i < n VAL [n=1, x=0] [L703] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [arg={0:0}, n=1, x=0] [L690] 2 int t; VAL [arg={0:0}, arg={0:0}, n=1, x=0] [L691] 2 t = x VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=0] [L692] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1] [L675] COND TRUE 1 !(cond) VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1] [L676] 1 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 54 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 107 SDtfs, 229 SDslu, 247 SDs, 0 SdLazy, 54 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9040occurred 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: 0.3s AutomataMinimizationTime, 1 MinimizatonAttempts, 855 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 1650 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...