/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/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:32:12,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:32:12,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:32:12,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:32:12,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:32:12,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:32:12,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:32:12,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:32:12,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:32:12,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:32:12,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:32:12,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:32:12,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:32:12,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:32:12,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:32:12,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:32:12,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:32:12,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:32:12,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:32:12,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:32:12,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:32:12,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:32:12,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:32:12,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:32:12,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:32:12,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:32:12,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:32:12,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:32:12,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:32:12,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:32:12,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:32:12,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:32:12,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:32:12,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:32:12,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:32:12,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:32:12,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:32:12,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:32:12,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:32:12,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:32:12,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:32:12,366 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 02:32:12,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:32:12,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:32:12,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:32:12,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:32:12,395 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:32:12,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:32:12,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:32:12,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:32:12,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:32:12,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:32:12,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:32:12,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:32:12,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:32:12,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:32:12,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:32:12,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:32:12,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:32:12,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:32:12,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:32:12,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:32:12,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:32:12,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:32:12,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:32:12,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:32:12,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:32:12,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:32:12,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:32:12,400 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:32:12,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:32:12,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:32:12,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:32:12,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:32:12,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:32:12,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:32:12,687 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:32:12,688 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-04-18 02:32:12,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085703a00/23fa4ab83a1544afb59436d9023250b6/FLAG40149af77 [2020-04-18 02:32:13,360 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:32:13,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-04-18 02:32:13,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085703a00/23fa4ab83a1544afb59436d9023250b6/FLAG40149af77 [2020-04-18 02:32:13,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085703a00/23fa4ab83a1544afb59436d9023250b6 [2020-04-18 02:32:13,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:32:13,697 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:32:13,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:32:13,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:32:13,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:32:13,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:32:13" (1/1) ... [2020-04-18 02:32:13,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d9580c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:13, skipping insertion in model container [2020-04-18 02:32:13,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:32:13" (1/1) ... [2020-04-18 02:32:13,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:32:13,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:32:14,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:32:14,248 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:32:14,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:32:14,386 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:32:14,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14 WrapperNode [2020-04-18 02:32:14,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:32:14,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:32:14,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:32:14,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:32:14,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:32:14,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:32:14,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:32:14,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:32:14,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (1/1) ... [2020-04-18 02:32:14,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:32:14,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:32:14,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:32:14,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:32:14,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (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 02:32:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:32:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:32:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:32:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:32:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:32:14,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:32:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:32:14,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:32:14,540 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:32:14,541 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:32:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:32:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:32:14,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:32:14,543 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 02:32:14,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:32:14,903 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:32:14,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:32:14 BoogieIcfgContainer [2020-04-18 02:32:14,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:32:14,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:32:14,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:32:14,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:32:14,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:32:13" (1/3) ... [2020-04-18 02:32:14,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea76cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:32:14, skipping insertion in model container [2020-04-18 02:32:14,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:14" (2/3) ... [2020-04-18 02:32:14,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea76cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:32:14, skipping insertion in model container [2020-04-18 02:32:14,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:32:14" (3/3) ... [2020-04-18 02:32:14,921 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-04-18 02:32:14,929 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:32:14,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:32:14,936 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:32:14,937 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:32:14,971 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,972 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,972 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,973 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,974 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,974 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,974 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,975 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,975 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,975 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,976 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,976 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,977 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,977 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,978 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,978 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,979 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,979 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,984 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,984 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,984 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,985 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,993 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,994 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,994 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,995 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,997 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,997 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,998 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:14,998 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:15,020 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:32:15,040 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:32:15,040 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:32:15,040 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:32:15,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:32:15,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:32:15,041 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:32:15,041 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:32:15,041 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:32:15,055 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:32:15,056 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:32:15,103 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:32:15,103 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:32:15,108 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:32:15,111 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:32:15,132 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:32:15,133 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:32:15,133 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:32:15,136 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:32:15,137 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:32:16,473 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:32:16,536 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-18 02:32:16,537 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 02:32:16,541 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 02:32:16,583 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 02:32:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 02:32:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:32:16,598 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:16,599 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:16,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:16,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-18 02:32:16,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:16,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215636719] [2020-04-18 02:32:16,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:16,775 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 02:32:16,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215636719] [2020-04-18 02:32:16,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:16,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:32:16,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991350072] [2020-04-18 02:32:16,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:32:16,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:16,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:32:16,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:32:16,808 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 02:32:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:16,851 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 02:32:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:32:16,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 02:32:16,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:16,870 INFO L225 Difference]: With dead ends: 362 [2020-04-18 02:32:16,870 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 02:32:16,871 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:32:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 02:32:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 02:32:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 02:32:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 02:32:16,948 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 02:32:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:16,950 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 02:32:16,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:32:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 02:32:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:32:16,951 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:16,952 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:16,952 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:16,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-18 02:32:16,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:16,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961362136] [2020-04-18 02:32:16,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:17,096 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 02:32:17,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961362136] [2020-04-18 02:32:17,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:17,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:32:17,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194120347] [2020-04-18 02:32:17,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:32:17,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:17,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:32:17,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:32:17,102 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 02:32:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:17,150 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 02:32:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:32:17,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:32:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:17,158 INFO L225 Difference]: With dead ends: 330 [2020-04-18 02:32:17,158 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 02:32:17,162 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 02:32:17,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 02:32:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 02:32:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 02:32:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 02:32:17,208 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 02:32:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:17,209 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 02:32:17,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:32:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 02:32:17,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:32:17,212 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:17,213 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:17,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:17,214 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-04-18 02:32:17,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:17,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740072365] [2020-04-18 02:32:17,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:17,325 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 02:32:17,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740072365] [2020-04-18 02:32:17,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:17,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:32:17,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556615145] [2020-04-18 02:32:17,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:32:17,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:17,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:32:17,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:32:17,329 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-04-18 02:32:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:17,390 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-04-18 02:32:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:32:17,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 02:32:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:17,393 INFO L225 Difference]: With dead ends: 314 [2020-04-18 02:32:17,394 INFO L226 Difference]: Without dead ends: 170 [2020-04-18 02:32:17,394 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:32:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-18 02:32:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-18 02:32:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 02:32:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-04-18 02:32:17,417 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 10 [2020-04-18 02:32:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:17,418 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-04-18 02:32:17,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:32:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-04-18 02:32:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:32:17,421 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:17,421 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:17,421 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:17,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:17,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-04-18 02:32:17,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:17,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473658715] [2020-04-18 02:32:17,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:17,527 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 02:32:17,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473658715] [2020-04-18 02:32:17,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:17,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:32:17,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893959641] [2020-04-18 02:32:17,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:32:17,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:17,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:32:17,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:32:17,534 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-04-18 02:32:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:17,572 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2020-04-18 02:32:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:32:17,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:32:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:17,574 INFO L225 Difference]: With dead ends: 183 [2020-04-18 02:32:17,575 INFO L226 Difference]: Without dead ends: 143 [2020-04-18 02:32:17,575 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 02:32:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-04-18 02:32:17,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-04-18 02:32:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-04-18 02:32:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2020-04-18 02:32:17,582 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2020-04-18 02:32:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:17,583 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2020-04-18 02:32:17,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:32:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2020-04-18 02:32:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:32:17,584 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:17,585 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:17,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:17,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 1 times [2020-04-18 02:32:17,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:17,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063634612] [2020-04-18 02:32:17,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:17,638 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 02:32:17,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063634612] [2020-04-18 02:32:17,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:17,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:32:17,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167632250] [2020-04-18 02:32:17,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:32:17,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:17,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:32:17,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:32:17,641 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand 5 states. [2020-04-18 02:32:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:17,687 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2020-04-18 02:32:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:32:17,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:32:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:17,692 INFO L225 Difference]: With dead ends: 129 [2020-04-18 02:32:17,693 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 02:32:17,693 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 02:32:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 02:32:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 02:32:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 02:32:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-04-18 02:32:17,704 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2020-04-18 02:32:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:17,705 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-04-18 02:32:17,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:32:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-04-18 02:32:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:32:17,709 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:17,709 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:17,710 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:17,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:17,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-04-18 02:32:17,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:17,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561707790] [2020-04-18 02:32:17,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:17,814 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 02:32:17,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561707790] [2020-04-18 02:32:17,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:17,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:32:17,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504913126] [2020-04-18 02:32:17,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:32:17,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:17,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:32:17,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:32:17,818 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-04-18 02:32:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:17,876 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-04-18 02:32:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:32:17,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:32:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:17,878 INFO L225 Difference]: With dead ends: 93 [2020-04-18 02:32:17,878 INFO L226 Difference]: Without dead ends: 85 [2020-04-18 02:32:17,878 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:32:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-04-18 02:32:17,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-04-18 02:32:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-04-18 02:32:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-04-18 02:32:17,883 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-04-18 02:32:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:17,883 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-04-18 02:32:17,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:32:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-04-18 02:32:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 02:32:17,886 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:17,886 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:17,886 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:17,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:17,886 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-04-18 02:32:17,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:17,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962535960] [2020-04-18 02:32:17,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:17,928 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 02:32:17,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962535960] [2020-04-18 02:32:17,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:17,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:32:17,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571971129] [2020-04-18 02:32:17,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:32:17,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:17,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:32:17,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:32:17,930 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-04-18 02:32:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:17,951 INFO L93 Difference]: Finished difference Result 117 states and 236 transitions. [2020-04-18 02:32:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:32:17,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-18 02:32:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:17,953 INFO L225 Difference]: With dead ends: 117 [2020-04-18 02:32:17,953 INFO L226 Difference]: Without dead ends: 55 [2020-04-18 02:32:17,953 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 02:32:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-18 02:32:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-18 02:32:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-18 02:32:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-04-18 02:32:17,955 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-04-18 02:32:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:17,956 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-04-18 02:32:17,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:32:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-04-18 02:32:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 02:32:17,957 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:17,957 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:17,957 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 2 times [2020-04-18 02:32:17,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:17,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50941404] [2020-04-18 02:32:17,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:18,019 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 02:32:18,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50941404] [2020-04-18 02:32:18,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:18,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:32:18,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310866686] [2020-04-18 02:32:18,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:32:18,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:18,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:32:18,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:32:18,021 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-04-18 02:32:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:18,047 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-04-18 02:32:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:32:18,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-18 02:32:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:18,048 INFO L225 Difference]: With dead ends: 54 [2020-04-18 02:32:18,048 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:32:18,049 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:32:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:32:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:32:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:32:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:32:18,050 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 02:32:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:18,050 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:32:18,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:32:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:32:18,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:32:18,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:32:18 BasicIcfg [2020-04-18 02:32:18,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:32:18,055 INFO L168 Benchmark]: Toolchain (without parser) took 4379.08 ms. Allocated memory was 137.4 MB in the beginning and 251.7 MB in the end (delta: 114.3 MB). Free memory was 100.9 MB in the beginning and 103.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 112.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:18,056 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:32:18,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.76 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 157.7 MB in the end (delta: -58.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:18,058 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.41 ms. Allocated memory is still 201.3 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:18,059 INFO L168 Benchmark]: Boogie Preprocessor took 27.50 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:18,059 INFO L168 Benchmark]: RCFGBuilder took 440.74 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 132.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:18,060 INFO L168 Benchmark]: TraceAbstraction took 3144.40 ms. Allocated memory was 201.3 MB in the beginning and 251.7 MB in the end (delta: 50.3 MB). Free memory was 131.7 MB in the beginning and 103.1 MB in the end (delta: 28.6 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:18,065 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 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.76 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 157.7 MB in the end (delta: -58.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.41 ms. Allocated memory is still 201.3 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.50 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.74 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 132.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3144.40 ms. Allocated memory was 201.3 MB in the beginning and 251.7 MB in the end (delta: 50.3 MB). Free memory was 131.7 MB in the beginning and 103.1 MB in the end (delta: 28.6 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 175 SDtfs, 173 SDslu, 270 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...