/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/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 15:03:53,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 15:03:53,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 15:03:53,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 15:03:53,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 15:03:53,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 15:03:53,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 15:03:53,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 15:03:53,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 15:03:53,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 15:03:53,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 15:03:53,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 15:03:53,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 15:03:53,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 15:03:53,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 15:03:53,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 15:03:53,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 15:03:53,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 15:03:53,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 15:03:53,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 15:03:53,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 15:03:53,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 15:03:53,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 15:03:53,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 15:03:53,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 15:03:53,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 15:03:53,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 15:03:53,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 15:03:53,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 15:03:53,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 15:03:53,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 15:03:53,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 15:03:53,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 15:03:53,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 15:03:53,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 15:03:53,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 15:03:53,329 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 15:03:53,343 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 15:03:53,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 15:03:53,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 15:03:53,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 15:03:53,345 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 15:03:53,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 15:03:53,345 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 15:03:53,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 15:03:53,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 15:03:53,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 15:03:53,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 15:03:53,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 15:03:53,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 15:03:53,346 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 15:03:53,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 15:03:53,347 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 15:03:53,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 15:03:53,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 15:03:53,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 15:03:53,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 15:03:53,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 15:03:53,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 15:03:53,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 15:03:53,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 15:03:53,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 15:03:53,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 15:03:53,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 15:03:53,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 15:03:53,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-18 15:03:53,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 15:03:53,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 15:03:53,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 15:03:53,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 15:03:53,678 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 15:03:53,679 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 15:03:53,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2019-12-18 15:03:53,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98be82a0a/78c329d037da4f52b6c51c89adc51aa2/FLAGe792a82be [2019-12-18 15:03:54,271 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 15:03:54,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2019-12-18 15:03:54,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98be82a0a/78c329d037da4f52b6c51c89adc51aa2/FLAGe792a82be [2019-12-18 15:03:54,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98be82a0a/78c329d037da4f52b6c51c89adc51aa2 [2019-12-18 15:03:54,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 15:03:54,629 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 15:03:54,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 15:03:54,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 15:03:54,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 15:03:54,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:03:54" (1/1) ... [2019-12-18 15:03:54,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceb2709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:54, skipping insertion in model container [2019-12-18 15:03:54,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:03:54" (1/1) ... [2019-12-18 15:03:54,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 15:03:54,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 15:03:55,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:03:55,152 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 15:03:55,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:03:55,293 INFO L208 MainTranslator]: Completed translation [2019-12-18 15:03:55,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55 WrapperNode [2019-12-18 15:03:55,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 15:03:55,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 15:03:55,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 15:03:55,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 15:03:55,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 15:03:55,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 15:03:55,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 15:03:55,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 15:03:55,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (1/1) ... [2019-12-18 15:03:55,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 15:03:55,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 15:03:55,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 15:03:55,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 15:03:55,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (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 15:03:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 15:03:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 15:03:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 15:03:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 15:03:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 15:03:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 15:03:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 15:03:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 15:03:55,444 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 15:03:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 15:03:55,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 15:03:55,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 15:03:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 15:03:55,446 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 15:03:55,840 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 15:03:55,841 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 15:03:55,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:03:55 BoogieIcfgContainer [2019-12-18 15:03:55,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 15:03:55,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 15:03:55,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 15:03:55,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 15:03:55,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:03:54" (1/3) ... [2019-12-18 15:03:55,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae39734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:03:55, skipping insertion in model container [2019-12-18 15:03:55,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:03:55" (2/3) ... [2019-12-18 15:03:55,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae39734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:03:55, skipping insertion in model container [2019-12-18 15:03:55,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:03:55" (3/3) ... [2019-12-18 15:03:55,851 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2019-12-18 15:03:55,861 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 15:03:55,862 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 15:03:55,869 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 15:03:55,870 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 15:03:55,897 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,898 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,898 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,899 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,899 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,899 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,900 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,900 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,900 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,901 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,901 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,901 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,902 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,902 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,902 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,902 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,903 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,903 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,907 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,908 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,908 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,908 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,914 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,914 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,914 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,915 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,926 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,926 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,927 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,927 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:03:55,943 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 15:03:55,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:03:55,959 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:03:55,960 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:03:55,960 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:03:55,960 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:03:55,960 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:03:55,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:03:55,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:03:55,975 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-18 15:03:55,978 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 15:03:56,040 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 15:03:56,042 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:03:56,047 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 22 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 15:03:56,050 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 15:03:56,075 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 15:03:56,076 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:03:56,077 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 22 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 15:03:56,081 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 15:03:56,082 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:03:57,551 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-12-18 15:03:57,613 INFO L206 etLargeBlockEncoding]: Checked pairs total: 489 [2019-12-18 15:03:57,613 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2019-12-18 15:03:57,617 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 15:03:57,627 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 15:03:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 15:03:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 15:03:57,636 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:03:57,637 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:03:57,637 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:03:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:03:57,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1221233282, now seen corresponding path program 1 times [2019-12-18 15:03:57,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:03:57,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381934874] [2019-12-18 15:03:57,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:03:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:03:57,887 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 15:03:57,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381934874] [2019-12-18 15:03:57,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:03:57,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 15:03:57,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547213674] [2019-12-18 15:03:57,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:03:57,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:03:57,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:03:57,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:03:57,912 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 15:03:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:03:57,945 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-18 15:03:57,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:03:57,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 15:03:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:03:57,958 INFO L225 Difference]: With dead ends: 42 [2019-12-18 15:03:57,958 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 15:03:57,960 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 15:03:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 15:03:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 15:03:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 15:03:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 15:03:58,007 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-18 15:03:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:03:58,008 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 15:03:58,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:03:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 15:03:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:03:58,011 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:03:58,011 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:03:58,011 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:03:58,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:03:58,012 INFO L82 PathProgramCache]: Analyzing trace with hash 796473804, now seen corresponding path program 1 times [2019-12-18 15:03:58,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:03:58,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021406420] [2019-12-18 15:03:58,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:03:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:03:58,150 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 15:03:58,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021406420] [2019-12-18 15:03:58,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:03:58,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:03:58,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421071231] [2019-12-18 15:03:58,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:03:58,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:03:58,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:03:58,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:03:58,155 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-18 15:03:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:03:58,188 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2019-12-18 15:03:58,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:03:58,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 15:03:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:03:58,190 INFO L225 Difference]: With dead ends: 39 [2019-12-18 15:03:58,190 INFO L226 Difference]: Without dead ends: 31 [2019-12-18 15:03:58,193 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 15:03:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-18 15:03:58,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-18 15:03:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-18 15:03:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2019-12-18 15:03:58,198 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 9 [2019-12-18 15:03:58,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:03:58,199 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2019-12-18 15:03:58,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:03:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2019-12-18 15:03:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 15:03:58,200 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:03:58,200 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:03:58,200 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:03:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:03:58,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1474951325, now seen corresponding path program 1 times [2019-12-18 15:03:58,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:03:58,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725234657] [2019-12-18 15:03:58,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:03:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:03:58,264 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 15:03:58,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725234657] [2019-12-18 15:03:58,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:03:58,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:03:58,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359271772] [2019-12-18 15:03:58,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:03:58,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:03:58,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:03:58,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:03:58,267 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 4 states. [2019-12-18 15:03:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:03:58,295 INFO L93 Difference]: Finished difference Result 32 states and 53 transitions. [2019-12-18 15:03:58,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:03:58,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 15:03:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:03:58,296 INFO L225 Difference]: With dead ends: 32 [2019-12-18 15:03:58,296 INFO L226 Difference]: Without dead ends: 18 [2019-12-18 15:03:58,297 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 15:03:58,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-18 15:03:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-18 15:03:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-18 15:03:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2019-12-18 15:03:58,301 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2019-12-18 15:03:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:03:58,301 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-12-18 15:03:58,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:03:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2019-12-18 15:03:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 15:03:58,302 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:03:58,302 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:03:58,303 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:03:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:03:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1079116931, now seen corresponding path program 1 times [2019-12-18 15:03:58,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:03:58,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524123293] [2019-12-18 15:03:58,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:03:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:03:58,407 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 15:03:58,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524123293] [2019-12-18 15:03:58,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:03:58,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:03:58,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053239480] [2019-12-18 15:03:58,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:03:58,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:03:58,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:03:58,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:03:58,410 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 5 states. [2019-12-18 15:03:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:03:58,447 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-12-18 15:03:58,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:03:58,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 15:03:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:03:58,448 INFO L225 Difference]: With dead ends: 20 [2019-12-18 15:03:58,448 INFO L226 Difference]: Without dead ends: 16 [2019-12-18 15:03:58,449 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-18 15:03:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-18 15:03:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-18 15:03:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-18 15:03:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-18 15:03:58,452 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-18 15:03:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:03:58,452 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-18 15:03:58,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:03:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-18 15:03:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 15:03:58,453 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:03:58,453 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:03:58,454 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:03:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:03:58,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1076556641, now seen corresponding path program 2 times [2019-12-18 15:03:58,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:03:58,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581280406] [2019-12-18 15:03:58,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:03:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:03:58,555 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 15:03:58,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581280406] [2019-12-18 15:03:58,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:03:58,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 15:03:58,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189357265] [2019-12-18 15:03:58,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 15:03:58,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:03:58,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 15:03:58,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-18 15:03:58,558 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 6 states. [2019-12-18 15:03:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:03:58,619 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-12-18 15:03:58,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 15:03:58,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-18 15:03:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:03:58,620 INFO L225 Difference]: With dead ends: 16 [2019-12-18 15:03:58,620 INFO L226 Difference]: Without dead ends: 14 [2019-12-18 15:03:58,620 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-18 15:03:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-18 15:03:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-18 15:03:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-18 15:03:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-18 15:03:58,623 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2019-12-18 15:03:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:03:58,623 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-18 15:03:58,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 15:03:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-18 15:03:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 15:03:58,624 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:03:58,624 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:03:58,624 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:03:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:03:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash 986560406, now seen corresponding path program 1 times [2019-12-18 15:03:58,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:03:58,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762446536] [2019-12-18 15:03:58,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:03:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:03:58,656 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 15:03:58,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762446536] [2019-12-18 15:03:58,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:03:58,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:03:58,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131103186] [2019-12-18 15:03:58,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:03:58,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:03:58,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:03:58,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:03:58,658 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2019-12-18 15:03:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:03:58,665 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-18 15:03:58,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:03:58,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-18 15:03:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:03:58,666 INFO L225 Difference]: With dead ends: 13 [2019-12-18 15:03:58,666 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 15:03:58,666 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 15:03:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 15:03:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 15:03:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 15:03:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 15:03:58,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 15:03:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:03:58,668 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 15:03:58,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:03:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 15:03:58,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 15:03:58,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 03:03:58 BasicIcfg [2019-12-18 15:03:58,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 15:03:58,674 INFO L168 Benchmark]: Toolchain (without parser) took 4045.41 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 101.1 MB in the beginning and 130.3 MB in the end (delta: -29.2 MB). Peak memory consumption was 75.1 MB. Max. memory is 7.1 GB. [2019-12-18 15:03:58,675 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 144.7 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 15:03:58,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.52 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.9 MB in the beginning and 159.9 MB in the end (delta: -59.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-12-18 15:03:58,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.07 ms. Allocated memory is still 202.4 MB. Free memory was 159.9 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 15:03:58,678 INFO L168 Benchmark]: Boogie Preprocessor took 28.74 ms. Allocated memory is still 202.4 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 15:03:58,678 INFO L168 Benchmark]: RCFGBuilder took 460.88 ms. Allocated memory is still 202.4 MB. Free memory was 155.8 MB in the beginning and 136.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-12-18 15:03:58,679 INFO L168 Benchmark]: TraceAbstraction took 2828.73 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 135.3 MB in the beginning and 130.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2019-12-18 15:03:58,684 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 144.7 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.52 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.9 MB in the beginning and 159.9 MB in the end (delta: -59.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.07 ms. Allocated memory is still 202.4 MB. Free memory was 159.9 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.74 ms. Allocated memory is still 202.4 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.88 ms. Allocated memory is still 202.4 MB. Free memory was 155.8 MB in the beginning and 136.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2828.73 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 135.3 MB in the beginning and 130.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 210 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 489 CheckedPairsTotal, 43 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: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 45 SDslu, 47 SDs, 0 SdLazy, 49 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1433 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...