/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:50:30,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:50:30,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:50:30,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:50:30,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:50:30,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:50:30,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:50:30,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:50:30,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:50:30,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:50:30,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:50:30,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:50:30,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:50:30,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:50:30,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:50:30,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:50:30,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:50:30,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:50:30,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:50:30,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:50:30,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:50:30,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:50:30,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:50:30,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:50:30,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:50:30,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:50:30,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:50:30,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:50:30,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:50:30,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:50:30,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:50:30,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:50:30,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:50:30,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:50:30,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:50:30,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:50:30,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:50:30,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:50:30,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:50:30,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:50:30,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:50:30,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:50:30,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:50:30,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:50:30,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:50:30,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:50:30,535 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:50:30,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:50:30,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:50:30,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:50:30,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:50:30,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:50:30,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:50:30,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:50:30,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:50:30,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:50:30,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:50:30,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:50:30,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:50:30,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:50:30,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:50:30,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:50:30,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:50:30,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:50:30,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:50:30,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:50:30,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:50:30,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:50:30,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:50:30,543 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:50:30,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:50:30,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:50:30,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:50:30,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:50:30,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:50:30,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:50:30,837 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:50:30,838 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2020-04-18 02:50:30,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00203c27f/3d1e2321c8434012be93d470ec30d853/FLAGdcb9f03f3 [2020-04-18 02:50:31,444 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:50:31,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2020-04-18 02:50:31,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00203c27f/3d1e2321c8434012be93d470ec30d853/FLAGdcb9f03f3 [2020-04-18 02:50:31,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00203c27f/3d1e2321c8434012be93d470ec30d853 [2020-04-18 02:50:31,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:50:31,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:50:31,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:50:31,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:50:31,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:50:31,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:50:31" (1/1) ... [2020-04-18 02:50:31,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bba74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:31, skipping insertion in model container [2020-04-18 02:50:31,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:50:31" (1/1) ... [2020-04-18 02:50:31,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:50:31,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:50:32,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:50:32,309 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:50:32,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:50:32,428 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:50:32,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32 WrapperNode [2020-04-18 02:50:32,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:50:32,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:50:32,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:50:32,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:50:32,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:50:32,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:50:32,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:50:32,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:50:32,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... [2020-04-18 02:50:32,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:50:32,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:50:32,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:50:32,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:50:32,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:50:32,573 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:50:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:50:32,573 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:50:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:50:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:50:32,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:50:32,575 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:50:32,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:50:32,907 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:50:32,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:50:32 BoogieIcfgContainer [2020-04-18 02:50:32,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:50:32,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:50:32,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:50:32,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:50:32,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:50:31" (1/3) ... [2020-04-18 02:50:32,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346a803c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:50:32, skipping insertion in model container [2020-04-18 02:50:32,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:32" (2/3) ... [2020-04-18 02:50:32,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346a803c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:50:32, skipping insertion in model container [2020-04-18 02:50:32,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:50:32" (3/3) ... [2020-04-18 02:50:32,919 INFO L109 eAbstractionObserver]: Analyzing ICFG safe033_tso.oepc.i [2020-04-18 02:50:32,931 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:50:32,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:50:32,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:50:32,940 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:50:32,964 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,965 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,965 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,966 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,966 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,967 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,968 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,968 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,968 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,968 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,969 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,969 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,975 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,976 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,976 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,976 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,994 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,994 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,994 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:32,994 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:33,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 02:50:33,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:50:33,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:50:33,027 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:50:33,027 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:50:33,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:50:33,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:50:33,028 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:50:33,028 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:50:33,042 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-18 02:50:33,043 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 02:50:33,079 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 02:50:33,080 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:50:33,084 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 32 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. [2020-04-18 02:50:33,086 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 02:50:33,104 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 02:50:33,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:50:33,106 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 32 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. [2020-04-18 02:50:33,107 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 02:50:33,109 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:50:34,353 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1209 [2020-04-18 02:50:34,354 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-04-18 02:50:34,357 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 02:50:34,370 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 02:50:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 02:50:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 02:50:34,382 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:34,383 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 02:50:34,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:34,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1785955775, now seen corresponding path program 1 times [2020-04-18 02:50:34,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:34,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712305867] [2020-04-18 02:50:34,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:50:34,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712305867] [2020-04-18 02:50:34,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:34,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:50:34,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748539611] [2020-04-18 02:50:34,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:50:34,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:34,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:50:34,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:50:34,609 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 02:50:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:34,639 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-18 02:50:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:50:34,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 02:50:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:34,666 INFO L225 Difference]: With dead ends: 72 [2020-04-18 02:50:34,667 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 02:50:34,674 INFO L678 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 [2020-04-18 02:50:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 02:50:34,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 02:50:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 02:50:34,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-18 02:50:34,744 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-18 02:50:34,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:34,744 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-18 02:50:34,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:50:34,744 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-18 02:50:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 02:50:34,746 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:34,746 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:50:34,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash -469946389, now seen corresponding path program 1 times [2020-04-18 02:50:34,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:34,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365413064] [2020-04-18 02:50:34,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:50:34,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365413064] [2020-04-18 02:50:34,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:34,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:50:34,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265974402] [2020-04-18 02:50:34,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:50:34,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:50:34,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:50:34,915 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 4 states. [2020-04-18 02:50:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:34,949 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-04-18 02:50:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:50:34,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 02:50:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:34,951 INFO L225 Difference]: With dead ends: 56 [2020-04-18 02:50:34,951 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 02:50:34,952 INFO L678 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 [2020-04-18 02:50:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 02:50:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 02:50:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 02:50:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 02:50:34,958 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 7 [2020-04-18 02:50:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:34,958 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 02:50:34,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:50:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 02:50:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:50:34,959 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:34,959 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:50:34,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:34,960 INFO L82 PathProgramCache]: Analyzing trace with hash -658099301, now seen corresponding path program 1 times [2020-04-18 02:50:34,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:34,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405494031] [2020-04-18 02:50:34,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:50:35,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405494031] [2020-04-18 02:50:35,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:35,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:50:35,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597725022] [2020-04-18 02:50:35,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:50:35,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:35,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:50:35,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:50:35,028 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-04-18 02:50:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:35,073 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-18 02:50:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:50:35,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 02:50:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:35,075 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:50:35,075 INFO L226 Difference]: Without dead ends: 28 [2020-04-18 02:50:35,076 INFO L678 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 [2020-04-18 02:50:35,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-18 02:50:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-18 02:50:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-18 02:50:35,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-18 02:50:35,081 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-18 02:50:35,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:35,082 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-18 02:50:35,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:50:35,083 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 02:50:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:50:35,083 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:35,083 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:50:35,083 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash 967414389, now seen corresponding path program 1 times [2020-04-18 02:50:35,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:35,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996848182] [2020-04-18 02:50:35,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:50:35,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996848182] [2020-04-18 02:50:35,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:35,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:50:35,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419644310] [2020-04-18 02:50:35,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:50:35,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:35,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:50:35,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:50:35,155 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 3 states. [2020-04-18 02:50:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:35,171 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-04-18 02:50:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:50:35,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:50:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:35,172 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:50:35,172 INFO L226 Difference]: Without dead ends: 16 [2020-04-18 02:50:35,173 INFO L678 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 [2020-04-18 02:50:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-04-18 02:50:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-04-18 02:50:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-04-18 02:50:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-04-18 02:50:35,177 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-04-18 02:50:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:35,177 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-04-18 02:50:35,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:50:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 02:50:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:50:35,178 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:35,178 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:50:35,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:35,179 INFO L82 PathProgramCache]: Analyzing trace with hash -129480839, now seen corresponding path program 2 times [2020-04-18 02:50:35,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:35,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739548169] [2020-04-18 02:50:35,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:50:35,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739548169] [2020-04-18 02:50:35,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:35,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:50:35,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263523479] [2020-04-18 02:50:35,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:50:35,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:35,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:50:35,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:50:35,262 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-04-18 02:50:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:35,279 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 02:50:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:50:35,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:50:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:35,279 INFO L225 Difference]: With dead ends: 15 [2020-04-18 02:50:35,279 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:50:35,280 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:50:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:50:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:50:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:50:35,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:50:35,282 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 02:50:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:35,282 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:50:35,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:50:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:50:35,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:50:35,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:50:35 BasicIcfg [2020-04-18 02:50:35,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:50:35,297 INFO L168 Benchmark]: Toolchain (without parser) took 3495.46 ms. Allocated memory was 138.4 MB in the beginning and 248.5 MB in the end (delta: 110.1 MB). Free memory was 101.8 MB in the beginning and 178.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:35,298 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:50:35,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.71 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 159.8 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:35,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.10 ms. Allocated memory is still 202.4 MB. Free memory was 159.8 MB in the beginning and 157.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:35,307 INFO L168 Benchmark]: Boogie Preprocessor took 24.22 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:35,308 INFO L168 Benchmark]: RCFGBuilder took 410.44 ms. Allocated memory is still 202.4 MB. Free memory was 156.2 MB in the beginning and 136.8 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:35,309 INFO L168 Benchmark]: TraceAbstraction took 2377.94 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 136.1 MB in the beginning and 178.8 MB in the end (delta: -42.7 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:35,315 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.71 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 159.8 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.10 ms. Allocated memory is still 202.4 MB. Free memory was 159.8 MB in the beginning and 157.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.22 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.44 ms. Allocated memory is still 202.4 MB. Free memory was 156.2 MB in the beginning and 136.8 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2377.94 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 136.1 MB in the beginning and 178.8 MB in the end (delta: -42.7 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 364 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1209 CheckedPairsTotal, 47 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: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 64 SDtfs, 38 SDslu, 64 SDs, 0 SdLazy, 45 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 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, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 939 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...