/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:36:46,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:36:46,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:36:46,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:36:46,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:36:46,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:36:46,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:36:46,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:36:46,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:36:46,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:36:46,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:36:46,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:36:46,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:36:46,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:36:46,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:36:46,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:36:46,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:36:46,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:36:46,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:36:46,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:36:46,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:36:46,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:36:46,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:36:46,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:36:46,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:36:46,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:36:46,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:36:46,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:36:46,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:36:46,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:36:46,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:36:46,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:36:46,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:36:46,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:36:46,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:36:46,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:36:46,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:36:46,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:36:46,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:36:46,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:36:46,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:36:46,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:36:46,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:36:46,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:36:46,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:36:46,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:36:46,408 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:36:46,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:36:46,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:36:46,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:36:46,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:36:46,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:36:46,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:36:46,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:36:46,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:36:46,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:36:46,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:36:46,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:36:46,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:36:46,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:36:46,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:36:46,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:36:46,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:36:46,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:36:46,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:36:46,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:36:46,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:36:46,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:36:46,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:36:46,415 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:36:46,416 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:36:46,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:36:46,416 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:36:46,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:36:46,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:36:46,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:36:46,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:36:46,886 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:36:46,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-09-11 23:36:46,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c3997eaa/b3a1874223e74132965c93c7b9900b2f/FLAG978c67b76 [2020-09-11 23:36:47,600 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:36:47,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-09-11 23:36:47,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c3997eaa/b3a1874223e74132965c93c7b9900b2f/FLAG978c67b76 [2020-09-11 23:36:47,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c3997eaa/b3a1874223e74132965c93c7b9900b2f [2020-09-11 23:36:47,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:36:47,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:36:47,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:36:47,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:36:47,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:36:47,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:36:47" (1/1) ... [2020-09-11 23:36:47,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42178c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:47, skipping insertion in model container [2020-09-11 23:36:47,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:36:47" (1/1) ... [2020-09-11 23:36:47,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:36:47,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:36:48,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:36:48,494 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:36:48,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:36:48,666 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:36:48,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48 WrapperNode [2020-09-11 23:36:48,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:36:48,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:36:48,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:36:48,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:36:48,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:36:48,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:36:48,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:36:48,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:36:48,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (1/1) ... [2020-09-11 23:36:48,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:36:48,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:36:48,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:36:48,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:36:48,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (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 23:36:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:36:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:36:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:36:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:36:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:36:48,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:36:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:36:48,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:36:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:36:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:36:48,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:36:48,839 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 23:36:49,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:36:49,172 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:36:49,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:36:49 BoogieIcfgContainer [2020-09-11 23:36:49,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:36:49,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:36:49,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:36:49,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:36:49,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:36:47" (1/3) ... [2020-09-11 23:36:49,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65970b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:36:49, skipping insertion in model container [2020-09-11 23:36:49,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:36:48" (2/3) ... [2020-09-11 23:36:49,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65970b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:36:49, skipping insertion in model container [2020-09-11 23:36:49,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:36:49" (3/3) ... [2020-09-11 23:36:49,188 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2020-09-11 23:36:49,202 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:36:49,203 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:36:49,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:36:49,215 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:36:49,246 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,258 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,258 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,265 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:36:49,288 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-11 23:36:49,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:36:49,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:36:49,312 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:36:49,312 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:36:49,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:36:49,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:36:49,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:36:49,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:36:49,330 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-09-11 23:36:49,332 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-09-11 23:36:49,378 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-09-11 23:36:49,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:36:49,386 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-11 23:36:49,389 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-09-11 23:36:49,411 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-09-11 23:36:49,411 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:36:49,412 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-11 23:36:49,413 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-11 23:36:49,415 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:36:50,741 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-09-11 23:36:50,742 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-11 23:36:50,746 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-11 23:36:50,764 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-11 23:36:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-11 23:36:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 23:36:50,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:36:50,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-11 23:36:50,776 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:36:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:36:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-09-11 23:36:50,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:36:50,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175379584] [2020-09-11 23:36:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:36:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:36:51,039 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 23:36:51,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175379584] [2020-09-11 23:36:51,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:36:51,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:36:51,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [125076845] [2020-09-11 23:36:51,044 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:36:51,048 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:36:51,064 INFO L274 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-09-11 23:36:51,064 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:36:51,066 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:36:51,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:36:51,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:36:51,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:36:51,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:36:51,087 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-11 23:36:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:36:51,119 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-09-11 23:36:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:36:51,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-11 23:36:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:36:51,151 INFO L225 Difference]: With dead ends: 72 [2020-09-11 23:36:51,152 INFO L226 Difference]: Without dead ends: 56 [2020-09-11 23:36:51,154 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 23:36:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-11 23:36:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-11 23:36:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-11 23:36:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-09-11 23:36:51,222 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-09-11 23:36:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:36:51,223 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-09-11 23:36:51,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:36:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-09-11 23:36:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 23:36:51,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:36:51,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:36:51,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:36:51,226 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:36:51,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:36:51,226 INFO L82 PathProgramCache]: Analyzing trace with hash 417556795, now seen corresponding path program 1 times [2020-09-11 23:36:51,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:36:51,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547889634] [2020-09-11 23:36:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:36:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:36:51,371 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 23:36:51,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547889634] [2020-09-11 23:36:51,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:36:51,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:36:51,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1843787915] [2020-09-11 23:36:51,373 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:36:51,374 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:36:51,379 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-09-11 23:36:51,380 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:36:51,419 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:36:51,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:36:51,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:36:51,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:36:51,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:36:51,422 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-09-11 23:36:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:36:51,429 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-09-11 23:36:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:36:51,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-11 23:36:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:36:51,431 INFO L225 Difference]: With dead ends: 53 [2020-09-11 23:36:51,431 INFO L226 Difference]: Without dead ends: 53 [2020-09-11 23:36:51,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:36:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-11 23:36:51,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-11 23:36:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-11 23:36:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-09-11 23:36:51,441 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-09-11 23:36:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:36:51,441 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-09-11 23:36:51,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:36:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-09-11 23:36:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:36:51,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:36:51,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:36:51,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:36:51,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:36:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:36:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-09-11 23:36:51,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:36:51,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173817326] [2020-09-11 23:36:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:36:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:36:51,536 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 23:36:51,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173817326] [2020-09-11 23:36:51,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:36:51,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:36:51,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1773377926] [2020-09-11 23:36:51,539 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:36:51,541 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:36:51,547 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 21 transitions. [2020-09-11 23:36:51,547 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:36:51,593 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:36:51,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:36:51,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:36:51,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:36:51,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:36:51,595 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 4 states. [2020-09-11 23:36:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:36:51,618 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-09-11 23:36:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:36:51,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-11 23:36:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:36:51,620 INFO L225 Difference]: With dead ends: 60 [2020-09-11 23:36:51,620 INFO L226 Difference]: Without dead ends: 36 [2020-09-11 23:36:51,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 23:36:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-11 23:36:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-11 23:36:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-11 23:36:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-09-11 23:36:51,626 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-09-11 23:36:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:36:51,627 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-09-11 23:36:51,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:36:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-09-11 23:36:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:36:51,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:36:51,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:36:51,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:36:51,628 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:36:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:36:51,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-09-11 23:36:51,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:36:51,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973498015] [2020-09-11 23:36:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:36:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:36:51,754 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 23:36:51,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973498015] [2020-09-11 23:36:51,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:36:51,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:36:51,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1369268174] [2020-09-11 23:36:51,759 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:36:51,760 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:36:51,761 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-09-11 23:36:51,762 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:36:51,798 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:36:51,829 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:36:51,858 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:36:51,883 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:36:51,900 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:36:51,907 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [702#(not (= 2 ~__unbuffered_cnt~0))] [2020-09-11 23:36:51,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:36:51,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:36:51,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:36:51,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:36:51,908 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 5 states. [2020-09-11 23:36:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:36:51,955 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-09-11 23:36:51,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:36:51,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 23:36:51,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:36:51,956 INFO L225 Difference]: With dead ends: 32 [2020-09-11 23:36:51,956 INFO L226 Difference]: Without dead ends: 22 [2020-09-11 23:36:51,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:36:51,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-11 23:36:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-11 23:36:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-11 23:36:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-11 23:36:51,960 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2020-09-11 23:36:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:36:51,961 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-11 23:36:51,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:36:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-11 23:36:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:36:51,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:36:51,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:36:51,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:36:51,962 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:36:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:36:51,963 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-09-11 23:36:51,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:36:51,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285710702] [2020-09-11 23:36:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:36:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:36:52,009 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 23:36:52,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285710702] [2020-09-11 23:36:52,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:36:52,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:36:52,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [125357981] [2020-09-11 23:36:52,011 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:36:52,012 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:36:52,014 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-11 23:36:52,015 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:36:52,019 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:36:52,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:36:52,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:36:52,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:36:52,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:36:52,020 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-09-11 23:36:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:36:52,025 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-11 23:36:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:36:52,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 23:36:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:36:52,026 INFO L225 Difference]: With dead ends: 21 [2020-09-11 23:36:52,027 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:36:52,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 23:36:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:36:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:36:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:36:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:36:52,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-11 23:36:52,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:36:52,028 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:36:52,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:36:52,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:36:52,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:36:52,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:36:52,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:36:52 BasicIcfg [2020-09-11 23:36:52,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:36:52,038 INFO L168 Benchmark]: Toolchain (without parser) took 4162.96 ms. Allocated memory was 138.9 MB in the beginning and 249.6 MB in the end (delta: 110.6 MB). Free memory was 100.6 MB in the beginning and 154.4 MB in the end (delta: -53.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:36:52,039 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:36:52,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.97 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 160.9 MB in the end (delta: -60.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:36:52,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.20 ms. Allocated memory is still 202.9 MB. Free memory was 160.9 MB in the beginning and 158.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:36:52,042 INFO L168 Benchmark]: Boogie Preprocessor took 26.37 ms. Allocated memory is still 202.9 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. [2020-09-11 23:36:52,043 INFO L168 Benchmark]: RCFGBuilder took 431.22 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 137.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-11 23:36:52,044 INFO L168 Benchmark]: TraceAbstraction took 2854.93 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 137.3 MB in the beginning and 154.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-09-11 23:36:52,048 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.97 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 160.9 MB in the end (delta: -60.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.20 ms. Allocated memory is still 202.9 MB. Free memory was 160.9 MB in the beginning and 158.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.37 ms. Allocated memory is still 202.9 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 431.22 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 137.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2854.93 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 137.3 MB in the beginning and 154.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 371 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1251 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, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 60 SDtfs, 27 SDslu, 46 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 28 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 709 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...