/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:37:49,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:37:49,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:37:49,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:37:49,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:37:49,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:37:49,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:37:49,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:37:49,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:37:49,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:37:49,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:37:49,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:37:49,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:37:49,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:37:49,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:37:49,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:37:49,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:37:49,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:37:49,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:37:49,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:37:49,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:37:49,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:37:49,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:37:49,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:37:49,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:37:49,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:37:49,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:37:49,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:37:49,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:37:49,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:37:49,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:37:49,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:37:49,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:37:49,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:37:49,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:37:49,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:37:49,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:37:49,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:37:49,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:37:49,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:37:49,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:37:49,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:37:49,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:37:49,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:37:49,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:37:49,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:37:49,533 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:37:49,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:37:49,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:37:49,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:37:49,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:37:49,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:37:49,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:37:49,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:37:49,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:37:49,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:37:49,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:37:49,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:37:49,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:37:49,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:37:49,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:37:49,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:37:49,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:37:49,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:37:49,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:37:49,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:37:49,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:37:49,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:37:49,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:37:49,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:37:49,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:37:49,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:37:49,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:37:49,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:37:49,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:37:49,925 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:37:49,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i [2020-04-17 22:37:49,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e23dc170f/03de2b06303041879a1257016c08c004/FLAGef45cb11d [2020-04-17 22:37:50,496 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:37:50,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i [2020-04-17 22:37:50,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e23dc170f/03de2b06303041879a1257016c08c004/FLAGef45cb11d [2020-04-17 22:37:50,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e23dc170f/03de2b06303041879a1257016c08c004 [2020-04-17 22:37:50,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:37:50,856 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:37:50,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:37:50,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:37:50,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:37:50,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:37:50" (1/1) ... [2020-04-17 22:37:50,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471e8602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:50, skipping insertion in model container [2020-04-17 22:37:50,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:37:50" (1/1) ... [2020-04-17 22:37:50,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:37:50,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:37:51,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:37:51,468 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:37:51,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:37:51,626 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:37:51,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51 WrapperNode [2020-04-17 22:37:51,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:37:51,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:37:51,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:37:51,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:37:51,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:37:51,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:37:51,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:37:51,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:37:51,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (1/1) ... [2020-04-17 22:37:51,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:37:51,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:37:51,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:37:51,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:37:51,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (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 [2020-04-17 22:37:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:37:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:37:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:37:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:37:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:37:51,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:37:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:37:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:37:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:37:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:37:51,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:37:51,841 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:37:52,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:37:52,189 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:37:52,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:37:52 BoogieIcfgContainer [2020-04-17 22:37:52,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:37:52,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:37:52,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:37:52,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:37:52,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:37:50" (1/3) ... [2020-04-17 22:37:52,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cf2a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:37:52, skipping insertion in model container [2020-04-17 22:37:52,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:51" (2/3) ... [2020-04-17 22:37:52,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cf2a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:37:52, skipping insertion in model container [2020-04-17 22:37:52,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:37:52" (3/3) ... [2020-04-17 22:37:52,205 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_tso.opt.i [2020-04-17 22:37:52,216 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:37:52,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:37:52,225 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:37:52,226 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:37:52,257 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,257 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,257 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,258 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,258 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,258 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,259 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,259 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,259 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,259 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,260 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,260 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,264 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,265 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,265 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,265 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,270 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,270 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,271 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,271 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:52,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 22:37:52,303 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:37:52,303 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:37:52,304 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:37:52,304 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:37:52,304 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:37:52,304 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:37:52,304 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:37:52,304 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:37:52,320 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-17 22:37:52,322 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-17 22:37:52,359 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-17 22:37:52,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:37:52,364 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 22:37:52,367 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-17 22:37:52,385 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-17 22:37:52,385 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:37:52,386 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 22:37:52,388 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-17 22:37:52,389 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:37:53,975 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-04-17 22:37:53,976 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-17 22:37:53,980 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-17 22:37:53,993 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-17 22:37:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-17 22:37:54,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 22:37:54,002 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:54,003 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 22:37:54,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:54,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-04-17 22:37:54,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:54,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309427434] [2020-04-17 22:37:54,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:54,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309427434] [2020-04-17 22:37:54,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:54,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:37:54,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478043329] [2020-04-17 22:37:54,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:54,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:54,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:54,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:54,357 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-04-17 22:37:54,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:54,437 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-04-17 22:37:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:37:54,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-04-17 22:37:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:54,454 INFO L225 Difference]: With dead ends: 63 [2020-04-17 22:37:54,455 INFO L226 Difference]: Without dead ends: 40 [2020-04-17 22:37:54,456 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 [2020-04-17 22:37:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-17 22:37:54,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-17 22:37:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-17 22:37:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-17 22:37:54,505 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-04-17 22:37:54,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:54,505 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-17 22:37:54,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-17 22:37:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:37:54,506 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:54,506 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:54,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:54,507 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-04-17 22:37:54,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:54,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303694889] [2020-04-17 22:37:54,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:54,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303694889] [2020-04-17 22:37:54,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:54,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:54,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696264036] [2020-04-17 22:37:54,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:37:54,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:54,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:37:54,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:37:54,613 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-04-17 22:37:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:54,664 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-17 22:37:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:37:54,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-17 22:37:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:54,666 INFO L225 Difference]: With dead ends: 35 [2020-04-17 22:37:54,666 INFO L226 Difference]: Without dead ends: 28 [2020-04-17 22:37:54,667 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 [2020-04-17 22:37:54,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-17 22:37:54,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-17 22:37:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-17 22:37:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-17 22:37:54,676 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-17 22:37:54,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:54,677 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-17 22:37:54,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:37:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-17 22:37:54,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:37:54,678 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:54,678 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:54,678 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:54,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:54,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-04-17 22:37:54,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:54,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923996241] [2020-04-17 22:37:54,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:54,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923996241] [2020-04-17 22:37:54,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:54,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:54,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991845524] [2020-04-17 22:37:54,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:54,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:54,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:54,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:54,732 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-04-17 22:37:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:54,748 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-04-17 22:37:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:37:54,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:37:54,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:54,749 INFO L225 Difference]: With dead ends: 35 [2020-04-17 22:37:54,749 INFO L226 Difference]: Without dead ends: 22 [2020-04-17 22:37:54,750 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 [2020-04-17 22:37:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-17 22:37:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-17 22:37:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-17 22:37:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-17 22:37:54,754 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-04-17 22:37:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:54,754 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-17 22:37:54,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-17 22:37:54,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:37:54,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:54,755 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:54,755 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:54,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:54,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 2 times [2020-04-17 22:37:54,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:54,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683506469] [2020-04-17 22:37:54,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:54,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683506469] [2020-04-17 22:37:54,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:54,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:54,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313925288] [2020-04-17 22:37:54,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:54,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:54,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:54,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:54,837 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-04-17 22:37:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:54,854 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-17 22:37:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:37:54,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:37:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:54,855 INFO L225 Difference]: With dead ends: 21 [2020-04-17 22:37:54,855 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:37:54,856 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 [2020-04-17 22:37:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:37:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:37:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:37:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:37:54,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-17 22:37:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:54,857 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:37:54,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:37:54,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:37:54,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:37:54 BasicIcfg [2020-04-17 22:37:54,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:37:54,864 INFO L168 Benchmark]: Toolchain (without parser) took 4028.68 ms. Allocated memory was 137.4 MB in the beginning and 250.6 MB in the end (delta: 113.2 MB). Free memory was 100.3 MB in the beginning and 155.5 MB in the end (delta: -55.2 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:54,865 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 137.4 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:37:54,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.57 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 98.6 MB in the beginning and 154.5 MB in the end (delta: -56.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:54,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.83 ms. Allocated memory is still 199.8 MB. Free memory was 154.5 MB in the beginning and 152.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:54,868 INFO L168 Benchmark]: Boogie Preprocessor took 49.61 ms. Allocated memory is still 199.8 MB. Free memory was 152.5 MB in the beginning and 151.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:54,869 INFO L168 Benchmark]: RCFGBuilder took 438.19 ms. Allocated memory is still 199.8 MB. Free memory was 151.5 MB in the beginning and 131.3 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:54,870 INFO L168 Benchmark]: TraceAbstraction took 2666.63 ms. Allocated memory was 199.8 MB in the beginning and 250.6 MB in the end (delta: 50.9 MB). Free memory was 130.3 MB in the beginning and 155.5 MB in the end (delta: -25.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:54,875 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 137.4 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 770.57 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 98.6 MB in the beginning and 154.5 MB in the end (delta: -56.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 77.83 ms. Allocated memory is still 199.8 MB. Free memory was 154.5 MB in the beginning and 152.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.61 ms. Allocated memory is still 199.8 MB. Free memory was 152.5 MB in the beginning and 151.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.19 ms. Allocated memory is still 199.8 MB. Free memory was 151.5 MB in the beginning and 131.3 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2666.63 ms. Allocated memory was 199.8 MB in the beginning and 250.6 MB in the end (delta: 50.9 MB). Free memory was 130.3 MB in the beginning and 155.5 MB in the end (delta: -25.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 357 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1294 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 56 SDtfs, 47 SDslu, 68 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 895 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...