/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:50:40,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:50:40,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:50:40,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:50:40,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:50:40,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:50:40,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:50:40,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:50:40,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:50:40,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:50:40,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:50:40,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:50:40,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:50:40,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:50:40,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:50:40,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:50:40,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:50:40,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:50:40,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:50:40,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:50:40,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:50:40,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:50:40,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:50:40,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:50:40,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 22:50:40,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 22:50:40,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 22:50:40,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 22:50:40,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 22:50:40,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 22:50:40,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:50:40,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:50:40,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:50:40,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:50:40,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:50:40,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:50:40,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:50:40,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:50:40,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:50:40,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:50:40,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:50:40,955 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-VariableLbe.epf [2019-12-18 22:50:40,969 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:50:40,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:50:40,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:50:40,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:50:40,971 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:50:40,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:50:40,971 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:50:40,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:50:40,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:50:40,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:50:40,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:50:40,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:50:40,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:50:40,973 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:50:40,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:50:40,973 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:50:40,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:50:40,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:50:40,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:50:40,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:50:40,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:50:40,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:50:40,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:50:40,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:50:40,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:50:40,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:50:40,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:50:40,975 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:50:40,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:50:40,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:50:41,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:50:41,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:50:41,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:50:41,288 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:50:41,289 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:50:41,290 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2019-12-18 22:50:41,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc435ec3d/aa421ec389954660a35e595a79b31a68/FLAG42f74ec22 [2019-12-18 22:50:41,955 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:50:41,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2019-12-18 22:50:41,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc435ec3d/aa421ec389954660a35e595a79b31a68/FLAG42f74ec22 [2019-12-18 22:50:42,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc435ec3d/aa421ec389954660a35e595a79b31a68 [2019-12-18 22:50:42,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:50:42,253 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:50:42,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:50:42,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:50:42,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:50:42,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:42,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac36716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42, skipping insertion in model container [2019-12-18 22:50:42,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:42,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:50:42,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:50:42,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:50:42,771 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:50:42,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:50:42,955 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:50:42,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42 WrapperNode [2019-12-18 22:50:42,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:50:42,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:50:42,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:50:42,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:50:42,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:42,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:43,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:50:43,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:50:43,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:50:43,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:50:43,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:43,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:43,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:43,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:43,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:43,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:43,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (1/1) ... [2019-12-18 22:50:43,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:50:43,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:50:43,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:50:43,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:50:43,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (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 [2019-12-18 22:50:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:50:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:50:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:50:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:50:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:50:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:50:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:50:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:50:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:50:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:50:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:50:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:50:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:50:43,126 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 22:50:43,471 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:50:43,472 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:50:43,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:50:43 BoogieIcfgContainer [2019-12-18 22:50:43,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:50:43,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:50:43,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:50:43,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:50:43,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:50:42" (1/3) ... [2019-12-18 22:50:43,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aef4a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:50:43, skipping insertion in model container [2019-12-18 22:50:43,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:50:42" (2/3) ... [2019-12-18 22:50:43,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aef4a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:50:43, skipping insertion in model container [2019-12-18 22:50:43,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:50:43" (3/3) ... [2019-12-18 22:50:43,481 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2019-12-18 22:50:43,491 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:50:43,492 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:50:43,499 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:50:43,500 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:50:43,536 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,536 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,537 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,538 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,538 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,539 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,539 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,539 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,540 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,540 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,540 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,540 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,541 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,541 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,541 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,541 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,542 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,542 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,546 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,546 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,547 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,547 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,553 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,554 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,554 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,554 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,557 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,558 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,558 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,558 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:50:43,574 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:50:43,591 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:50:43,592 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:50:43,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:50:43,592 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:50:43,592 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:50:43,593 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:50:43,593 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:50:43,593 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:50:43,606 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-18 22:50:43,608 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:50:43,653 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:50:43,654 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:50:43,669 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:50:43,672 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:50:43,689 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:50:43,689 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:50:43,690 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:50:43,692 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:50:43,693 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:50:44,992 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-18 22:50:45,190 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-12-18 22:50:45,241 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-18 22:50:45,241 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-18 22:50:45,245 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 22:50:45,257 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 22:50:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 22:50:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:50:45,273 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:50:45,274 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:50:45,274 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:50:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:50:45,280 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-18 22:50:45,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:50:45,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768911136] [2019-12-18 22:50:45,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:50:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:50:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:50:45,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768911136] [2019-12-18 22:50:45,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:50:45,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:50:45,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698328111] [2019-12-18 22:50:45,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:50:45,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:50:45,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:50:45,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:50:45,582 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 22:50:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:50:45,630 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2019-12-18 22:50:45,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:50:45,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:50:45,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:50:45,663 INFO L225 Difference]: With dead ends: 44 [2019-12-18 22:50:45,663 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 22:50:45,665 INFO L631 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 [2019-12-18 22:50:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 22:50:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 22:50:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 22:50:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-18 22:50:45,717 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-18 22:50:45,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:50:45,719 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-18 22:50:45,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:50:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-18 22:50:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:50:45,721 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:50:45,721 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:50:45,722 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:50:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:50:45,722 INFO L82 PathProgramCache]: Analyzing trace with hash -816919897, now seen corresponding path program 1 times [2019-12-18 22:50:45,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:50:45,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502656801] [2019-12-18 22:50:45,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:50:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:50:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:50:45,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502656801] [2019-12-18 22:50:45,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:50:45,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:50:45,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982457596] [2019-12-18 22:50:45,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:50:45,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:50:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:50:45,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:50:45,844 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2019-12-18 22:50:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:50:45,866 INFO L93 Difference]: Finished difference Result 42 states and 71 transitions. [2019-12-18 22:50:45,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:50:45,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 22:50:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:50:45,868 INFO L225 Difference]: With dead ends: 42 [2019-12-18 22:50:45,868 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 22:50:45,869 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:50:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 22:50:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2019-12-18 22:50:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 22:50:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 58 transitions. [2019-12-18 22:50:45,875 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 58 transitions. Word has length 9 [2019-12-18 22:50:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:50:45,876 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 58 transitions. [2019-12-18 22:50:45,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:50:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2019-12-18 22:50:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:50:45,877 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:50:45,877 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:50:45,877 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:50:45,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:50:45,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1649012318, now seen corresponding path program 1 times [2019-12-18 22:50:45,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:50:45,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106221740] [2019-12-18 22:50:45,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:50:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:50:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:50:45,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106221740] [2019-12-18 22:50:45,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:50:45,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:50:45,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944141776] [2019-12-18 22:50:45,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:50:45,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:50:45,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:50:45,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:50:45,967 INFO L87 Difference]: Start difference. First operand 34 states and 58 transitions. Second operand 3 states. [2019-12-18 22:50:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:50:45,973 INFO L93 Difference]: Finished difference Result 32 states and 53 transitions. [2019-12-18 22:50:45,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:50:45,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 22:50:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:50:45,974 INFO L225 Difference]: With dead ends: 32 [2019-12-18 22:50:45,974 INFO L226 Difference]: Without dead ends: 32 [2019-12-18 22:50:45,975 INFO L631 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 [2019-12-18 22:50:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-18 22:50:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-18 22:50:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 22:50:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 53 transitions. [2019-12-18 22:50:45,980 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 53 transitions. Word has length 9 [2019-12-18 22:50:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:50:45,980 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 53 transitions. [2019-12-18 22:50:45,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:50:45,980 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 53 transitions. [2019-12-18 22:50:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:50:45,981 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:50:45,981 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:50:45,982 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:50:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:50:45,982 INFO L82 PathProgramCache]: Analyzing trace with hash 420225671, now seen corresponding path program 1 times [2019-12-18 22:50:45,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:50:45,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155204082] [2019-12-18 22:50:45,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:50:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:50:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:50:46,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155204082] [2019-12-18 22:50:46,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:50:46,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:50:46,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456299343] [2019-12-18 22:50:46,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:50:46,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:50:46,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:50:46,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:50:46,051 INFO L87 Difference]: Start difference. First operand 32 states and 53 transitions. Second operand 3 states. [2019-12-18 22:50:46,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:50:46,056 INFO L93 Difference]: Finished difference Result 31 states and 51 transitions. [2019-12-18 22:50:46,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:50:46,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:50:46,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:50:46,057 INFO L225 Difference]: With dead ends: 31 [2019-12-18 22:50:46,058 INFO L226 Difference]: Without dead ends: 25 [2019-12-18 22:50:46,058 INFO L631 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 [2019-12-18 22:50:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-18 22:50:46,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-18 22:50:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-18 22:50:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions. [2019-12-18 22:50:46,061 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 10 [2019-12-18 22:50:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:50:46,061 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions. [2019-12-18 22:50:46,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:50:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions. [2019-12-18 22:50:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:50:46,062 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:50:46,062 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:50:46,063 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:50:46,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:50:46,063 INFO L82 PathProgramCache]: Analyzing trace with hash 868018131, now seen corresponding path program 1 times [2019-12-18 22:50:46,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:50:46,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176526696] [2019-12-18 22:50:46,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:50:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:50:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:50:46,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176526696] [2019-12-18 22:50:46,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:50:46,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:50:46,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892807667] [2019-12-18 22:50:46,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:50:46,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:50:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:50:46,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:50:46,124 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand 4 states. [2019-12-18 22:50:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:50:46,140 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-18 22:50:46,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:50:46,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:50:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:50:46,141 INFO L225 Difference]: With dead ends: 27 [2019-12-18 22:50:46,141 INFO L226 Difference]: Without dead ends: 21 [2019-12-18 22:50:46,142 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:50:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-18 22:50:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-18 22:50:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-18 22:50:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-12-18 22:50:46,145 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 11 [2019-12-18 22:50:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:50:46,145 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-12-18 22:50:46,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:50:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2019-12-18 22:50:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:50:46,146 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:50:46,146 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:50:46,147 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:50:46,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:50:46,147 INFO L82 PathProgramCache]: Analyzing trace with hash 918993291, now seen corresponding path program 2 times [2019-12-18 22:50:46,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:50:46,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221320353] [2019-12-18 22:50:46,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:50:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:50:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:50:46,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221320353] [2019-12-18 22:50:46,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:50:46,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:50:46,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097823059] [2019-12-18 22:50:46,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:50:46,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:50:46,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:50:46,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:50:46,206 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2019-12-18 22:50:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:50:46,223 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2019-12-18 22:50:46,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:50:46,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:50:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:50:46,224 INFO L225 Difference]: With dead ends: 20 [2019-12-18 22:50:46,224 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:50:46,224 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:50:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:50:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:50:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:50:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:50:46,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:50:46,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:50:46,225 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:50:46,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:50:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:50:46,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:50:46,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:50:46 BasicIcfg [2019-12-18 22:50:46,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:50:46,232 INFO L168 Benchmark]: Toolchain (without parser) took 3979.19 ms. Allocated memory was 144.2 MB in the beginning and 249.6 MB in the end (delta: 105.4 MB). Free memory was 101.2 MB in the beginning and 160.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2019-12-18 22:50:46,233 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 22:50:46,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.88 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 158.1 MB in the end (delta: -57.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2019-12-18 22:50:46,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.57 ms. Allocated memory is still 201.3 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:50:46,235 INFO L168 Benchmark]: Boogie Preprocessor took 25.06 ms. Allocated memory is still 201.3 MB. Free memory was 156.1 MB in the beginning and 154.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:50:46,236 INFO L168 Benchmark]: RCFGBuilder took 433.67 ms. Allocated memory is still 201.3 MB. Free memory was 154.8 MB in the beginning and 134.2 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-12-18 22:50:46,237 INFO L168 Benchmark]: TraceAbstraction took 2755.50 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 133.5 MB in the beginning and 160.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:50:46,241 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.88 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 158.1 MB in the end (delta: -57.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.57 ms. Allocated memory is still 201.3 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.06 ms. Allocated memory is still 201.3 MB. Free memory was 156.1 MB in the beginning and 154.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.67 ms. Allocated memory is still 201.3 MB. Free memory was 154.8 MB in the beginning and 134.2 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2755.50 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 133.5 MB in the beginning and 160.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 16 SDslu, 37 SDs, 0 SdLazy, 29 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1266 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 correct! Received shutdown request...