/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/safe029_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:45:05,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:45:05,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:45:05,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:45:05,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:45:05,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:45:05,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:45:05,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:45:05,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:45:05,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:45:05,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:45:05,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:45:05,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:45:05,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:45:05,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:45:05,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:45:05,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:45:05,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:45:05,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:45:05,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:45:05,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:45:05,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:45:05,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:45:05,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:45:05,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:45:05,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:45:05,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:45:05,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:45:05,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:45:05,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:45:05,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:45:05,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:45:05,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:45:05,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:45:05,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:45:05,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:45:05,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:45:05,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:45:05,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:45:05,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:45:05,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:45:05,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:45:05,434 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:45:05,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:45:05,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:45:05,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:45:05,436 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:45:05,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:45:05,437 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:45:05,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:45:05,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:45:05,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:45:05,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:45:05,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:45:05,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:45:05,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:45:05,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:45:05,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:45:05,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:45:05,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:45:05,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:45:05,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:45:05,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:45:05,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:45:05,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:45:05,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:45:05,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:45:05,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:45:05,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:45:05,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:45:05,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:45:05,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:45:05,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:45:05,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:45:05,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:45:05,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:45:05,915 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:45:05,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2020-09-11 15:45:05,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748f43b3d/789eb1140b1b4d219447d9009de8de76/FLAG25c8e1cbc [2020-09-11 15:45:06,576 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:45:06,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2020-09-11 15:45:06,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748f43b3d/789eb1140b1b4d219447d9009de8de76/FLAG25c8e1cbc [2020-09-11 15:45:06,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748f43b3d/789eb1140b1b4d219447d9009de8de76 [2020-09-11 15:45:06,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:45:06,840 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:45:06,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:45:06,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:45:06,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:45:06,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:45:06" (1/1) ... [2020-09-11 15:45:06,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67abc2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:06, skipping insertion in model container [2020-09-11 15:45:06,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:45:06" (1/1) ... [2020-09-11 15:45:06,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:45:06,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:45:07,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:45:07,451 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:45:07,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:45:07,581 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:45:07,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07 WrapperNode [2020-09-11 15:45:07,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:45:07,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:45:07,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:45:07,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:45:07,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:45:07,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:45:07,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:45:07,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:45:07,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... [2020-09-11 15:45:07,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:45:07,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:45:07,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:45:07,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:45:07,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 15:45:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:45:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:45:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:45:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:45:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:45:07,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:45:07,751 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:45:07,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:45:07,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:45:07,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:45:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:45:07,754 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:45:08,097 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:45:08,098 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:45:08,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:45:08 BoogieIcfgContainer [2020-09-11 15:45:08,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:45:08,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:45:08,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:45:08,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:45:08,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:45:06" (1/3) ... [2020-09-11 15:45:08,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426d1733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:45:08, skipping insertion in model container [2020-09-11 15:45:08,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:45:07" (2/3) ... [2020-09-11 15:45:08,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426d1733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:45:08, skipping insertion in model container [2020-09-11 15:45:08,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:45:08" (3/3) ... [2020-09-11 15:45:08,113 INFO L109 eAbstractionObserver]: Analyzing ICFG safe029_tso.oepc.i [2020-09-11 15:45:08,125 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:45:08,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:45:08,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:45:08,135 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:45:08,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,164 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,164 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,171 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,171 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,171 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,172 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,177 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,178 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:45:08,199 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-11 15:45:08,223 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:45:08,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:45:08,223 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:45:08,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:45:08,224 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:45:08,224 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:45:08,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:45:08,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:45:08,240 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-09-11 15:45:08,242 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-09-11 15:45:08,283 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-09-11 15:45:08,284 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:45:08,289 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-11 15:45:08,291 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-09-11 15:45:08,310 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-09-11 15:45:08,310 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:45:08,311 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-11 15:45:08,315 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-11 15:45:08,317 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:45:09,722 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1300 [2020-09-11 15:45:09,722 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-09-11 15:45:09,727 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-11 15:45:09,741 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-11 15:45:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-11 15:45:09,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 15:45:09,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:45:09,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-11 15:45:09,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:45:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:45:09,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-09-11 15:45:09,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:45:09,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491147774] [2020-09-11 15:45:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:45:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:45:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:45:10,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491147774] [2020-09-11 15:45:10,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:45:10,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:45:10,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65502528] [2020-09-11 15:45:10,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:45:10,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:45:10,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:45:10,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:45:10,036 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-11 15:45:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:45:10,075 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-09-11 15:45:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:45:10,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-11 15:45:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:45:10,091 INFO L225 Difference]: With dead ends: 72 [2020-09-11 15:45:10,091 INFO L226 Difference]: Without dead ends: 56 [2020-09-11 15:45:10,093 INFO L675 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 [2020-09-11 15:45:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-11 15:45:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-11 15:45:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-11 15:45:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-09-11 15:45:10,141 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-09-11 15:45:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:45:10,141 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-09-11 15:45:10,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:45:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-09-11 15:45:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 15:45:10,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:45:10,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:45:10,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:45:10,143 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:45:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:45:10,143 INFO L82 PathProgramCache]: Analyzing trace with hash 343673099, now seen corresponding path program 1 times [2020-09-11 15:45:10,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:45:10,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592008313] [2020-09-11 15:45:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:45:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:45:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:45:10,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592008313] [2020-09-11 15:45:10,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:45:10,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:45:10,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109036965] [2020-09-11 15:45:10,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:45:10,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:45:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:45:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:45:10,263 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-09-11 15:45:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:45:10,277 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-09-11 15:45:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:45:10,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-11 15:45:10,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:45:10,279 INFO L225 Difference]: With dead ends: 55 [2020-09-11 15:45:10,279 INFO L226 Difference]: Without dead ends: 55 [2020-09-11 15:45:10,280 INFO L675 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 [2020-09-11 15:45:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-11 15:45:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-11 15:45:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-11 15:45:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-09-11 15:45:10,289 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-09-11 15:45:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:45:10,289 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-09-11 15:45:10,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:45:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-09-11 15:45:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:45:10,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:45:10,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:45:10,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:45:10,291 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:45:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:45:10,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-09-11 15:45:10,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:45:10,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71061657] [2020-09-11 15:45:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:45:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:45:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:45:10,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71061657] [2020-09-11 15:45:10,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:45:10,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:45:10,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269129734] [2020-09-11 15:45:10,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:45:10,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:45:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:45:10,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:45:10,380 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-09-11 15:45:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:45:10,415 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-09-11 15:45:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:45:10,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-11 15:45:10,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:45:10,417 INFO L225 Difference]: With dead ends: 56 [2020-09-11 15:45:10,417 INFO L226 Difference]: Without dead ends: 40 [2020-09-11 15:45:10,417 INFO L675 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 [2020-09-11 15:45:10,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-11 15:45:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-11 15:45:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-11 15:45:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-09-11 15:45:10,423 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-09-11 15:45:10,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:45:10,424 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-09-11 15:45:10,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:45:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-09-11 15:45:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:45:10,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:45:10,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:45:10,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:45:10,425 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:45:10,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:45:10,426 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-09-11 15:45:10,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:45:10,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390917372] [2020-09-11 15:45:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:45:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:45:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:45:10,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390917372] [2020-09-11 15:45:10,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:45:10,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:45:10,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114811641] [2020-09-11 15:45:10,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:45:10,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:45:10,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:45:10,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:45:10,479 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-09-11 15:45:10,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:45:10,488 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-09-11 15:45:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:45:10,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 15:45:10,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:45:10,490 INFO L225 Difference]: With dead ends: 51 [2020-09-11 15:45:10,490 INFO L226 Difference]: Without dead ends: 41 [2020-09-11 15:45:10,490 INFO L675 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 [2020-09-11 15:45:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-11 15:45:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-09-11 15:45:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-11 15:45:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-09-11 15:45:10,496 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-09-11 15:45:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:45:10,496 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-09-11 15:45:10,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:45:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-09-11 15:45:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:45:10,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:45:10,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:45:10,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:45:10,498 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:45:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:45:10,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-09-11 15:45:10,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:45:10,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181091768] [2020-09-11 15:45:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:45:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:45:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:45:10,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181091768] [2020-09-11 15:45:10,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:45:10,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:45:10,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537573873] [2020-09-11 15:45:10,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:45:10,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:45:10,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:45:10,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:45:10,579 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-09-11 15:45:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:45:10,590 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-09-11 15:45:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:45:10,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 15:45:10,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:45:10,591 INFO L225 Difference]: With dead ends: 42 [2020-09-11 15:45:10,592 INFO L226 Difference]: Without dead ends: 31 [2020-09-11 15:45:10,592 INFO L675 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 [2020-09-11 15:45:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-11 15:45:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-11 15:45:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-11 15:45:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-09-11 15:45:10,596 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-09-11 15:45:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:45:10,597 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-09-11 15:45:10,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:45:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-09-11 15:45:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:45:10,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:45:10,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:45:10,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:45:10,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:45:10,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:45:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-09-11 15:45:10,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:45:10,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006871947] [2020-09-11 15:45:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:45:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:45:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:45:10,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006871947] [2020-09-11 15:45:10,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:45:10,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:45:10,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665671003] [2020-09-11 15:45:10,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:45:10,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:45:10,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:45:10,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:45:10,669 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2020-09-11 15:45:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:45:10,691 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-09-11 15:45:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:45:10,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 15:45:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:45:10,692 INFO L225 Difference]: With dead ends: 25 [2020-09-11 15:45:10,692 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:45:10,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:45:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:45:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:45:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:45:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:45:10,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-09-11 15:45:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:45:10,694 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:45:10,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:45:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:45:10,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:45:10,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:45:10,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:45:10 BasicIcfg [2020-09-11 15:45:10,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:45:10,702 INFO L168 Benchmark]: Toolchain (without parser) took 3865.87 ms. Allocated memory was 148.9 MB in the beginning and 242.7 MB in the end (delta: 93.8 MB). Free memory was 103.6 MB in the beginning and 115.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:45:10,703 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:45:10,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.36 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 102.9 MB in the beginning and 162.1 MB in the end (delta: -59.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:45:10,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.63 ms. Allocated memory is still 205.0 MB. Free memory was 162.1 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:45:10,706 INFO L168 Benchmark]: Boogie Preprocessor took 29.39 ms. Allocated memory is still 205.0 MB. Free memory was 160.1 MB in the beginning and 158.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:45:10,707 INFO L168 Benchmark]: RCFGBuilder took 433.39 ms. Allocated memory is still 205.0 MB. Free memory was 158.3 MB in the beginning and 139.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:45:10,708 INFO L168 Benchmark]: TraceAbstraction took 2594.43 ms. Allocated memory was 205.0 MB in the beginning and 242.7 MB in the end (delta: 37.7 MB). Free memory was 138.6 MB in the beginning and 115.2 MB in the end (delta: 23.4 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:45:10,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.36 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 102.9 MB in the beginning and 162.1 MB in the end (delta: -59.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.63 ms. Allocated memory is still 205.0 MB. Free memory was 162.1 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.39 ms. Allocated memory is still 205.0 MB. Free memory was 160.1 MB in the beginning and 158.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.39 ms. Allocated memory is still 205.0 MB. Free memory was 158.3 MB in the beginning and 139.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2594.43 ms. Allocated memory was 205.0 MB in the beginning and 242.7 MB in the end (delta: 37.7 MB). Free memory was 138.6 MB in the beginning and 115.2 MB in the end (delta: 23.4 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 59 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 382 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1300 CheckedPairsTotal, 46 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, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 79 SDtfs, 33 SDslu, 63 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...