/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 14:51:59,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 14:51:59,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 14:51:59,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 14:51:59,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 14:51:59,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 14:51:59,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 14:51:59,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 14:51:59,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 14:51:59,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 14:51:59,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 14:51:59,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 14:51:59,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 14:51:59,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 14:51:59,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 14:51:59,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 14:51:59,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 14:51:59,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 14:51:59,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 14:51:59,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 14:51:59,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 14:51:59,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 14:51:59,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 14:51:59,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 14:51:59,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 14:51:59,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 14:51:59,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 14:51:59,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 14:51:59,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 14:51:59,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 14:51:59,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 14:51:59,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 14:51:59,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 14:51:59,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 14:51:59,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 14:51:59,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 14:51:59,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-18 14:51:59,587 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 14:51:59,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 14:51:59,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 14:51:59,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 14:51:59,590 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 14:51:59,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 14:51:59,590 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 14:51:59,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 14:51:59,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 14:51:59,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 14:51:59,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 14:51:59,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 14:51:59,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 14:51:59,593 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 14:51:59,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 14:51:59,593 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 14:51:59,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 14:51:59,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 14:51:59,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 14:51:59,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 14:51:59,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 14:51:59,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 14:51:59,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 14:51:59,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 14:51:59,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 14:51:59,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 14:51:59,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 14:51:59,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 14:51:59,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-18 14:51:59,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 14:51:59,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 14:51:59,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 14:51:59,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 14:51:59,905 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 14:51:59,906 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 14:51:59,907 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2019-12-18 14:51:59,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18551ee59/61053dcff7d74d8c828569a809669b9c/FLAGa41574685 [2019-12-18 14:52:00,562 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 14:52:00,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2019-12-18 14:52:00,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18551ee59/61053dcff7d74d8c828569a809669b9c/FLAGa41574685 [2019-12-18 14:52:00,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18551ee59/61053dcff7d74d8c828569a809669b9c [2019-12-18 14:52:00,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 14:52:00,899 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 14:52:00,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 14:52:00,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 14:52:00,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 14:52:00,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:52:00" (1/1) ... [2019-12-18 14:52:00,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338e9858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:00, skipping insertion in model container [2019-12-18 14:52:00,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:52:00" (1/1) ... [2019-12-18 14:52:00,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 14:52:00,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 14:52:01,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 14:52:01,501 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 14:52:01,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 14:52:01,629 INFO L208 MainTranslator]: Completed translation [2019-12-18 14:52:01,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01 WrapperNode [2019-12-18 14:52:01,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 14:52:01,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 14:52:01,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 14:52:01,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 14:52:01,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 14:52:01,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 14:52:01,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 14:52:01,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 14:52:01,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (1/1) ... [2019-12-18 14:52:01,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 14:52:01,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 14:52:01,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 14:52:01,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 14:52:01,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (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 14:52:01,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 14:52:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 14:52:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 14:52:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 14:52:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 14:52:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 14:52:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 14:52:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 14:52:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 14:52:01,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 14:52:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 14:52:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 14:52:01,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 14:52:01,780 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 14:52:02,156 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 14:52:02,157 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 14:52:02,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:52:02 BoogieIcfgContainer [2019-12-18 14:52:02,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 14:52:02,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 14:52:02,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 14:52:02,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 14:52:02,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 02:52:00" (1/3) ... [2019-12-18 14:52:02,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b0f900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:52:02, skipping insertion in model container [2019-12-18 14:52:02,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:52:01" (2/3) ... [2019-12-18 14:52:02,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b0f900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:52:02, skipping insertion in model container [2019-12-18 14:52:02,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:52:02" (3/3) ... [2019-12-18 14:52:02,167 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2019-12-18 14:52:02,176 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 14:52:02,177 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 14:52:02,184 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 14:52:02,185 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 14:52:02,214 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,214 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,215 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,215 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,215 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,216 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,216 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,216 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,219 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,219 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,219 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,220 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,220 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,221 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,221 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,221 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,221 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,225 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,231 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,232 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,234 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,234 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,242 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,243 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,243 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,243 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,246 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,246 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,247 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,247 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:52:02,263 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 14:52:02,279 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 14:52:02,280 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 14:52:02,280 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 14:52:02,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 14:52:02,280 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 14:52:02,280 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 14:52:02,281 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 14:52:02,281 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 14:52:02,295 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-18 14:52:02,297 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 14:52:02,341 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 14:52:02,341 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 14:52:02,349 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 14:52:02,354 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 14:52:02,372 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 14:52:02,372 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 14:52:02,377 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 14:52:02,380 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 14:52:02,382 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 14:52:03,858 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-12-18 14:52:04,001 INFO L206 etLargeBlockEncoding]: Checked pairs total: 479 [2019-12-18 14:52:04,001 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-18 14:52:04,005 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 14:52:04,017 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 14:52:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 14:52:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 14:52:04,030 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:52:04,031 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:52:04,031 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:52:04,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:52:04,041 INFO L82 PathProgramCache]: Analyzing trace with hash 492740166, now seen corresponding path program 1 times [2019-12-18 14:52:04,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:52:04,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31876068] [2019-12-18 14:52:04,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:52:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:52:04,337 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 14:52:04,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31876068] [2019-12-18 14:52:04,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:52:04,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 14:52:04,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219439924] [2019-12-18 14:52:04,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 14:52:04,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:52:04,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 14:52:04,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:52:04,370 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 14:52:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:52:04,415 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2019-12-18 14:52:04,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 14:52:04,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 14:52:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:52:04,445 INFO L225 Difference]: With dead ends: 44 [2019-12-18 14:52:04,448 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 14:52:04,450 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 14:52:04,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 14:52:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 14:52:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 14:52:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-18 14:52:04,498 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-18 14:52:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:52:04,500 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-18 14:52:04,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 14:52:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-18 14:52:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 14:52:04,502 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:52:04,502 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:52:04,502 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:52:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:52:04,503 INFO L82 PathProgramCache]: Analyzing trace with hash 709143484, now seen corresponding path program 1 times [2019-12-18 14:52:04,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:52:04,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457775629] [2019-12-18 14:52:04,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:52:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:52:04,631 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 14:52:04,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457775629] [2019-12-18 14:52:04,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:52:04,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 14:52:04,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430113192] [2019-12-18 14:52:04,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 14:52:04,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:52:04,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 14:52:04,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:52:04,634 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2019-12-18 14:52:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:52:04,643 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2019-12-18 14:52:04,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 14:52:04,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 14:52:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:52:04,645 INFO L225 Difference]: With dead ends: 34 [2019-12-18 14:52:04,645 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 14:52:04,646 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 14:52:04,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 14:52:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 14:52:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 14:52:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 14:52:04,651 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 9 [2019-12-18 14:52:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:52:04,652 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 14:52:04,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 14:52:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 14:52:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 14:52:04,653 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:52:04,653 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:52:04,653 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:52:04,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:52:04,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1904869198, now seen corresponding path program 1 times [2019-12-18 14:52:04,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:52:04,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030116196] [2019-12-18 14:52:04,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:52:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:52:04,695 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 14:52:04,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030116196] [2019-12-18 14:52:04,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:52:04,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 14:52:04,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656378118] [2019-12-18 14:52:04,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 14:52:04,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:52:04,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 14:52:04,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:52:04,697 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 3 states. [2019-12-18 14:52:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:52:04,707 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-18 14:52:04,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 14:52:04,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 14:52:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:52:04,709 INFO L225 Difference]: With dead ends: 36 [2019-12-18 14:52:04,709 INFO L226 Difference]: Without dead ends: 22 [2019-12-18 14:52:04,709 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 14:52:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-18 14:52:04,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-18 14:52:04,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-18 14:52:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2019-12-18 14:52:04,713 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 9 [2019-12-18 14:52:04,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:52:04,713 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-12-18 14:52:04,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 14:52:04,714 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2019-12-18 14:52:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 14:52:04,714 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:52:04,714 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:52:04,715 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:52:04,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:52:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1078655690, now seen corresponding path program 1 times [2019-12-18 14:52:04,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:52:04,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101170519] [2019-12-18 14:52:04,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:52:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:52:04,763 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 14:52:04,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101170519] [2019-12-18 14:52:04,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:52:04,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 14:52:04,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298575555] [2019-12-18 14:52:04,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 14:52:04,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:52:04,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 14:52:04,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 14:52:04,766 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 4 states. [2019-12-18 14:52:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:52:04,791 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2019-12-18 14:52:04,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 14:52:04,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 14:52:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:52:04,793 INFO L225 Difference]: With dead ends: 25 [2019-12-18 14:52:04,793 INFO L226 Difference]: Without dead ends: 17 [2019-12-18 14:52:04,793 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 14:52:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-18 14:52:04,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-18 14:52:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-18 14:52:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-18 14:52:04,796 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-18 14:52:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:52:04,797 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-18 14:52:04,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 14:52:04,797 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-18 14:52:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 14:52:04,797 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:52:04,798 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:52:04,798 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:52:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:52:04,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1824813225, now seen corresponding path program 1 times [2019-12-18 14:52:04,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:52:04,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400968771] [2019-12-18 14:52:04,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:52:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:52:04,858 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 14:52:04,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400968771] [2019-12-18 14:52:04,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:52:04,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 14:52:04,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46392364] [2019-12-18 14:52:04,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 14:52:04,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:52:04,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 14:52:04,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 14:52:04,860 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-18 14:52:04,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:52:04,883 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-18 14:52:04,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 14:52:04,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 14:52:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:52:04,884 INFO L225 Difference]: With dead ends: 16 [2019-12-18 14:52:04,884 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 14:52:04,885 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:52:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 14:52:04,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 14:52:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 14:52:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 14:52:04,886 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 14:52:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:52:04,886 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 14:52:04,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 14:52:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 14:52:04,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 14:52:04,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 02:52:04 BasicIcfg [2019-12-18 14:52:04,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 14:52:04,893 INFO L168 Benchmark]: Toolchain (without parser) took 3993.91 ms. Allocated memory was 146.3 MB in the beginning and 244.8 MB in the end (delta: 98.6 MB). Free memory was 102.6 MB in the beginning and 138.9 MB in the end (delta: -36.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2019-12-18 14:52:04,893 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 146.3 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 14:52:04,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.60 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.2 MB in the beginning and 160.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-12-18 14:52:04,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.12 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-18 14:52:04,899 INFO L168 Benchmark]: Boogie Preprocessor took 33.14 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 14:52:04,900 INFO L168 Benchmark]: RCFGBuilder took 441.93 ms. Allocated memory is still 203.9 MB. Free memory was 157.6 MB in the beginning and 137.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-12-18 14:52:04,901 INFO L168 Benchmark]: TraceAbstraction took 2730.82 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 137.0 MB in the beginning and 138.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. [2019-12-18 14:52:04,905 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 146.3 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.60 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.2 MB in the beginning and 160.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.12 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.14 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.93 ms. Allocated memory is still 203.9 MB. Free memory was 157.6 MB in the beginning and 137.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2730.82 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 137.0 MB in the beginning and 138.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 244 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 479 CheckedPairsTotal, 45 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, 53 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 16 SDslu, 38 SDs, 0 SdLazy, 24 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, 0.0s 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 898 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...