/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:27:27,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:27:27,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:27:27,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:27:27,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:27:27,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:27:27,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:27:27,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:27:27,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:27:27,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:27:27,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:27:27,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:27:27,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:27:27,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:27:27,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:27:27,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:27:27,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:27:27,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:27:27,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:27:27,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:27:27,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:27:27,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:27:27,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:27:27,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:27:27,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:27:27,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:27:27,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:27:27,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:27:27,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:27:27,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:27:27,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:27:27,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:27:27,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:27:27,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:27:27,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:27:27,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:27:27,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:27:27,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:27:27,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:27:27,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:27:27,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:27:27,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:27:27,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:27:27,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:27:27,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:27:27,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:27:27,419 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:27:27,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:27:27,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:27:27,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:27:27,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:27:27,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:27:27,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:27:27,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:27:27,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:27:27,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:27:27,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:27:27,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:27:27,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:27:27,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:27:27,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:27:27,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:27:27,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:27:27,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:27,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:27:27,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:27:27,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:27:27,424 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:27:27,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:27:27,424 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:27:27,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:27:27,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:27:27,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:27:27,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:27:27,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:27:27,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:27:27,716 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:27:27,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i [2020-04-18 11:27:27,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463ca9f6d/30946f9c947e4a3d8ad238c257c2d572/FLAG0967ad9d3 [2020-04-18 11:27:28,355 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:27:28,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i [2020-04-18 11:27:28,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463ca9f6d/30946f9c947e4a3d8ad238c257c2d572/FLAG0967ad9d3 [2020-04-18 11:27:28,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463ca9f6d/30946f9c947e4a3d8ad238c257c2d572 [2020-04-18 11:27:28,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:27:28,672 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:27:28,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:28,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:27:28,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:27:28,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:28" (1/1) ... [2020-04-18 11:27:28,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ab297e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:28, skipping insertion in model container [2020-04-18 11:27:28,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:28" (1/1) ... [2020-04-18 11:27:28,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:27:28,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:27:29,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:29,260 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:27:29,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:29,382 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:27:29,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29 WrapperNode [2020-04-18 11:27:29,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:29,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:29,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:27:29,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:27:29,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:29,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:27:29,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:27:29,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:27:29,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... [2020-04-18 11:27:29,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:27:29,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:27:29,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:27:29,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:27:29,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:27:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:27:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:27:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:27:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:27:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:27:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:27:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:27:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:27:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:27:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:27:29,521 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:27:29,878 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:27:29,878 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:27:29,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:29 BoogieIcfgContainer [2020-04-18 11:27:29,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:27:29,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:27:29,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:27:29,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:27:29,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:27:28" (1/3) ... [2020-04-18 11:27:29,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e5a15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:29, skipping insertion in model container [2020-04-18 11:27:29,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:29" (2/3) ... [2020-04-18 11:27:29,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e5a15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:29, skipping insertion in model container [2020-04-18 11:27:29,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:29" (3/3) ... [2020-04-18 11:27:29,893 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_power.oepc.i [2020-04-18 11:27:29,906 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:27:29,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:27:29,915 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:27:29,916 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:27:29,944 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,945 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,945 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,945 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,946 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,946 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,947 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,947 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,947 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,947 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,948 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,948 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,952 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,952 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,953 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,953 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,959 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,959 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,960 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,960 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:29,976 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 11:27:29,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:27:29,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:27:29,996 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:27:29,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:27:29,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:27:29,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:27:29,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:27:29,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:27:30,012 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:30,015 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:30,054 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 11:27:30,054 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:30,059 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:27:30,065 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:30,083 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 11:27:30,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:30,085 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:27:30,088 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 11:27:30,089 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:27:31,325 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 11:27:31,693 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-04-18 11:27:31,693 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 11:27:31,697 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 11:27:31,708 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 11:27:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:27:31,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:27:31,717 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:31,717 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:27:31,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:31,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-04-18 11:27:31,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:31,729 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [383498811] [2020-04-18 11:27:31,740 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:31,752 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:27:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:27:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:27:31,754 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 2 times [2020-04-18 11:27:31,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:31,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899641267] [2020-04-18 11:27:31,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:32,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899641267] [2020-04-18 11:27:32,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:32,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:32,010 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:32,014 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:32,017 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:27:32,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:32,033 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:32,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:32,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:32,044 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2020-04-18 11:27:32,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:32,071 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:27:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:27:32,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:32,072 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [383498811] [2020-04-18 11:27:32,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:32,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:32,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [383498811] [2020-04-18 11:27:32,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:27:32,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:32,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:32,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:32,086 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-04-18 11:27:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:32,134 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-04-18 11:27:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:27:32,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-04-18 11:27:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:32,149 INFO L225 Difference]: With dead ends: 63 [2020-04-18 11:27:32,150 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 11:27:32,153 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 11:27:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 11:27:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 11:27:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 11:27:32,205 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-04-18 11:27:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:32,210 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 11:27:32,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:27:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 11:27:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:32,217 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:32,218 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:32,218 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:32,219 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-04-18 11:27:32,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:32,220 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [825477519] [2020-04-18 11:27:32,221 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:32,224 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:27:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:27:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:32,227 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:32,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:32,227 INFO L82 PathProgramCache]: Analyzing trace with hash -771554460, now seen corresponding path program 2 times [2020-04-18 11:27:32,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:32,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669488392] [2020-04-18 11:27:32,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:32,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669488392] [2020-04-18 11:27:32,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:32,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:32,366 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:32,366 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:32,369 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:27:32,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:32,386 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:32,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:32,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:32,387 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 11:27:32,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:32,411 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 11:27:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 11:27:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:32,412 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 3 times [2020-04-18 11:27:32,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:32,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306294943] [2020-04-18 11:27:32,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:32,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306294943] [2020-04-18 11:27:32,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:32,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:32,527 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:32,528 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:32,529 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:32,529 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:32,549 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:32,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:32,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:27:32,550 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2020-04-18 11:27:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:32,568 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 11:27:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 11:27:32,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:32,569 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [825477519] [2020-04-18 11:27:32,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:32,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:32,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [825477519] [2020-04-18 11:27:32,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:27:32,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:32,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:27:32,571 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-04-18 11:27:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:32,607 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-18 11:27:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:27:32,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:27:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:32,609 INFO L225 Difference]: With dead ends: 35 [2020-04-18 11:27:32,609 INFO L226 Difference]: Without dead ends: 28 [2020-04-18 11:27:32,610 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:27:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-18 11:27:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-18 11:27:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-18 11:27:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-18 11:27:32,614 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-18 11:27:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:32,615 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-18 11:27:32,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:27:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 11:27:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:32,616 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:32,616 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:32,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-04-18 11:27:32,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:32,617 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [793000486] [2020-04-18 11:27:32,617 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:32,619 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 11:27:32,620 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 11:27:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:32,621 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:32,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1286203238, now seen corresponding path program 2 times [2020-04-18 11:27:32,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:32,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18825849] [2020-04-18 11:27:32,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:32,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18825849] [2020-04-18 11:27:32,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:32,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:32,681 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:32,682 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:32,684 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-04-18 11:27:32,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:32,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:32,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:32,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:32,697 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 11:27:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:32,731 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 11:27:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 11:27:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:32,732 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:32,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1081539068, now seen corresponding path program 3 times [2020-04-18 11:27:32,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:32,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842969272] [2020-04-18 11:27:32,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:32,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842969272] [2020-04-18 11:27:32,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:32,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:32,792 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:32,793 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:32,795 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 11:27:32,795 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:32,803 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:32,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:27:32,804 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 5 states. [2020-04-18 11:27:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:32,866 INFO L93 Difference]: Finished difference Result 74 states and 140 transitions. [2020-04-18 11:27:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 140 transitions. [2020-04-18 11:27:32,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:32,867 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:32,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:32,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 4 times [2020-04-18 11:27:32,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:32,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734978694] [2020-04-18 11:27:32,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:32,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734978694] [2020-04-18 11:27:32,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:32,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:32,935 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:32,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:32,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-04-18 11:27:32,937 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:32,974 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:32,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:32,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:27:32,975 INFO L87 Difference]: Start difference. First operand 74 states and 140 transitions. Second operand 4 states. [2020-04-18 11:27:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:33,000 INFO L93 Difference]: Finished difference Result 110 states and 192 transitions. [2020-04-18 11:27:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 192 transitions. [2020-04-18 11:27:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:33,006 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:27:33,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:33,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 5 times [2020-04-18 11:27:33,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:33,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620238579] [2020-04-18 11:27:33,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:33,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620238579] [2020-04-18 11:27:33,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:33,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:33,069 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:33,071 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:33,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:27:33,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:33,148 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:33,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:33,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:27:33,149 INFO L87 Difference]: Start difference. First operand 110 states and 192 transitions. Second operand 5 states. [2020-04-18 11:27:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:33,175 INFO L93 Difference]: Finished difference Result 162 states and 258 transitions. [2020-04-18 11:27:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 258 transitions. [2020-04-18 11:27:33,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:33,177 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [793000486] [2020-04-18 11:27:33,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:33,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:33,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [793000486] [2020-04-18 11:27:33,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:27:33,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:33,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:27:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:27:33,183 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 10 states. [2020-04-18 11:27:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:33,469 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:27:33,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:27:33,469 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-04-18 11:27:33,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:33,470 INFO L225 Difference]: With dead ends: 41 [2020-04-18 11:27:33,470 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:27:33,471 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:27:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:27:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:27:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:27:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:27:33,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 11:27:33,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:33,472 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:27:33,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:27:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:27:33,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:33,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:27:33 BasicIcfg [2020-04-18 11:27:33,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:27:33,478 INFO L168 Benchmark]: Toolchain (without parser) took 4820.55 ms. Allocated memory was 140.0 MB in the beginning and 244.8 MB in the end (delta: 104.9 MB). Free memory was 102.2 MB in the beginning and 151.9 MB in the end (delta: -49.7 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:33,479 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 11:27:33,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.71 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 161.4 MB in the end (delta: -61.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:33,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.96 ms. Allocated memory is still 203.9 MB. Free memory was 161.4 MB in the beginning and 158.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:33,481 INFO L168 Benchmark]: Boogie Preprocessor took 26.79 ms. Allocated memory is still 203.9 MB. Free memory was 158.9 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. [2020-04-18 11:27:33,482 INFO L168 Benchmark]: RCFGBuilder took 424.35 ms. Allocated memory is still 203.9 MB. Free memory was 157.6 MB in the beginning and 137.6 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:33,483 INFO L168 Benchmark]: TraceAbstraction took 3592.78 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 137.6 MB in the beginning and 151.9 MB in the end (delta: -14.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:33,487 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 709.71 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 161.4 MB in the end (delta: -61.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.96 ms. Allocated memory is still 203.9 MB. Free memory was 161.4 MB in the beginning and 158.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.79 ms. Allocated memory is still 203.9 MB. Free memory was 158.9 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 424.35 ms. Allocated memory is still 203.9 MB. Free memory was 157.6 MB in the beginning and 137.6 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3592.78 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 137.6 MB in the beginning and 151.9 MB in the end (delta: -14.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 357 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1294 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 41 SDtfs, 62 SDslu, 91 SDs, 0 SdLazy, 106 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...