/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/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:33:02,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:33:02,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:33:02,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:33:02,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:33:02,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:33:02,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:33:02,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:33:02,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:33:02,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:33:02,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:33:02,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:33:02,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:33:02,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:33:02,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:33:02,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:33:02,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:33:02,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:33:02,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:33:02,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:33:02,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:33:02,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:33:02,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:33:02,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:33:02,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:33:02,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:33:02,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:33:02,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:33:02,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:33:02,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:33:02,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:33:02,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:33:02,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:33:02,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:33:02,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:33:02,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:33:02,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:33:02,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:33:02,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:33:02,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:33:02,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:33:02,571 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 22:33:02,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:33:02,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:33:02,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:33:02,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:33:02,598 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:33:02,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:33:02,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:33:02,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:33:02,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:33:02,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:33:02,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:33:02,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:33:02,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:33:02,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:33:02,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:33:02,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:33:02,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:33:02,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:33:02,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:33:02,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:33:02,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:33:02,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:33:02,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:33:02,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:33:02,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:33:02,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:33:02,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:33:02,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:33:02,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:33:02,887 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:33:02,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:33:02,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:33:02,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:33:02,913 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:33:02,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-04-17 22:33:02,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a860071/43309d297c4d4624a3b56cd7f5ddd1c0/FLAG97eb24aad [2020-04-17 22:33:03,547 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:33:03,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-04-17 22:33:03,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a860071/43309d297c4d4624a3b56cd7f5ddd1c0/FLAG97eb24aad [2020-04-17 22:33:03,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a860071/43309d297c4d4624a3b56cd7f5ddd1c0 [2020-04-17 22:33:03,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:33:03,854 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:33:03,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:33:03,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:33:03,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:33:03,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:33:03" (1/1) ... [2020-04-17 22:33:03,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379ad229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:03, skipping insertion in model container [2020-04-17 22:33:03,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:33:03" (1/1) ... [2020-04-17 22:33:03,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:33:03,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:33:04,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:33:04,394 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:33:04,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:33:04,530 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:33:04,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04 WrapperNode [2020-04-17 22:33:04,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:33:04,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:33:04,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:33:04,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:33:04,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:33:04,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:33:04,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:33:04,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:33:04,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (1/1) ... [2020-04-17 22:33:04,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:33:04,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:33:04,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:33:04,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:33:04,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (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 22:33:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:33:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:33:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:33:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:33:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:33:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:33:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:33:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:33:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:33:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:33:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:33:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:33:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:33:04,694 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 22:33:05,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:33:05,052 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:33:05,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:33:05 BoogieIcfgContainer [2020-04-17 22:33:05,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:33:05,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:33:05,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:33:05,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:33:05,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:33:03" (1/3) ... [2020-04-17 22:33:05,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b7024b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:33:05, skipping insertion in model container [2020-04-17 22:33:05,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:33:04" (2/3) ... [2020-04-17 22:33:05,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b7024b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:33:05, skipping insertion in model container [2020-04-17 22:33:05,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:33:05" (3/3) ... [2020-04-17 22:33:05,066 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-04-17 22:33:05,077 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:33:05,077 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:33:05,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:33:05,086 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:33:05,114 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,115 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,115 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,116 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,116 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,116 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,117 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,117 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,118 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,118 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,118 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,119 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,119 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,119 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,120 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,120 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,120 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,121 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,127 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,127 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,128 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,128 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,139 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,139 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,140 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,140 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,142 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,143 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,143 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,143 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:33:05,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:33:05,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:33:05,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:33:05,179 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:33:05,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:33:05,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:33:05,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:33:05,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:33:05,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:33:05,195 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 22:33:05,197 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 22:33:05,240 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 22:33:05,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:33:05,245 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:33:05,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 22:33:05,275 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 22:33:05,275 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:33:05,276 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:33:05,278 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:33:05,281 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:33:06,833 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 22:33:06,907 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-04-17 22:33:06,907 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-04-17 22:33:06,911 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 22:33:06,954 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 22:33:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 22:33:06,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:33:06,967 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:33:06,969 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:33:06,969 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:33:06,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:33:06,976 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-04-17 22:33:06,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:33:06,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530025006] [2020-04-17 22:33:06,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:33:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:33:07,155 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 22:33:07,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530025006] [2020-04-17 22:33:07,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:33:07,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:33:07,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258105606] [2020-04-17 22:33:07,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:33:07,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:33:07,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:33:07,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:33:07,185 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 22:33:07,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:33:07,220 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 22:33:07,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:33:07,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 22:33:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:33:07,262 INFO L225 Difference]: With dead ends: 362 [2020-04-17 22:33:07,262 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 22:33:07,264 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 [2020-04-17 22:33:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 22:33:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 22:33:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 22:33:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 22:33:07,377 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 22:33:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:33:07,379 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 22:33:07,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:33:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 22:33:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:33:07,381 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:33:07,381 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:33:07,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:33:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:33:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-04-17 22:33:07,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:33:07,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393713113] [2020-04-17 22:33:07,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:33:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:33:07,497 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 22:33:07,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393713113] [2020-04-17 22:33:07,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:33:07,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:33:07,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167370107] [2020-04-17 22:33:07,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:33:07,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:33:07,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:33:07,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:33:07,502 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-17 22:33:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:33:07,531 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-17 22:33:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:33:07,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:33:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:33:07,534 INFO L225 Difference]: With dead ends: 217 [2020-04-17 22:33:07,534 INFO L226 Difference]: Without dead ends: 217 [2020-04-17 22:33:07,535 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:33:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-17 22:33:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-17 22:33:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-17 22:33:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-17 22:33:07,554 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-17 22:33:07,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:33:07,555 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-17 22:33:07,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:33:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-17 22:33:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:33:07,560 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:33:07,560 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:33:07,560 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:33:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:33:07,560 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-04-17 22:33:07,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:33:07,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766995330] [2020-04-17 22:33:07,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:33:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:33:07,661 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 22:33:07,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766995330] [2020-04-17 22:33:07,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:33:07,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:33:07,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733609739] [2020-04-17 22:33:07,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:33:07,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:33:07,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:33:07,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:33:07,664 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-17 22:33:07,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:33:07,695 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-17 22:33:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:33:07,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:33:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:33:07,699 INFO L225 Difference]: With dead ends: 136 [2020-04-17 22:33:07,699 INFO L226 Difference]: Without dead ends: 136 [2020-04-17 22:33:07,700 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:33:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-17 22:33:07,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-17 22:33:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-17 22:33:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-17 22:33:07,707 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-17 22:33:07,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:33:07,707 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-17 22:33:07,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:33:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-17 22:33:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:33:07,716 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:33:07,716 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:33:07,716 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:33:07,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:33:07,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-04-17 22:33:07,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:33:07,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875930543] [2020-04-17 22:33:07,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:33:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:33:07,821 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 22:33:07,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875930543] [2020-04-17 22:33:07,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:33:07,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:33:07,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736058065] [2020-04-17 22:33:07,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:33:07,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:33:07,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:33:07,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:33:07,825 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-17 22:33:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:33:07,852 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-17 22:33:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:33:07,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:33:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:33:07,854 INFO L225 Difference]: With dead ends: 109 [2020-04-17 22:33:07,854 INFO L226 Difference]: Without dead ends: 109 [2020-04-17 22:33:07,855 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:33:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-17 22:33:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-17 22:33:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-17 22:33:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-17 22:33:07,860 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-17 22:33:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:33:07,861 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-17 22:33:07,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:33:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-17 22:33:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:33:07,862 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:33:07,862 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:33:07,862 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:33:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:33:07,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-04-17 22:33:07,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:33:07,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989898454] [2020-04-17 22:33:07,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:33:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:33:07,931 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 22:33:07,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989898454] [2020-04-17 22:33:07,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:33:07,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:33:07,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254144849] [2020-04-17 22:33:07,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:33:07,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:33:07,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:33:07,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:33:07,934 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-04-17 22:33:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:33:07,970 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-04-17 22:33:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:33:07,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:33:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:33:07,972 INFO L225 Difference]: With dead ends: 174 [2020-04-17 22:33:07,972 INFO L226 Difference]: Without dead ends: 136 [2020-04-17 22:33:07,972 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:33:07,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-17 22:33:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-04-17 22:33:07,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-17 22:33:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 237 transitions. [2020-04-17 22:33:07,976 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 237 transitions. Word has length 18 [2020-04-17 22:33:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:33:07,977 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 237 transitions. [2020-04-17 22:33:07,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:33:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 237 transitions. [2020-04-17 22:33:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:33:07,978 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:33:07,978 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:33:07,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:33:07,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:33:07,978 INFO L82 PathProgramCache]: Analyzing trace with hash -457536705, now seen corresponding path program 2 times [2020-04-17 22:33:07,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:33:07,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580503483] [2020-04-17 22:33:07,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:33:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:33:08,063 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 22:33:08,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580503483] [2020-04-17 22:33:08,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:33:08,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:33:08,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249216242] [2020-04-17 22:33:08,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:33:08,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:33:08,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:33:08,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:33:08,067 INFO L87 Difference]: Start difference. First operand 109 states and 237 transitions. Second operand 5 states. [2020-04-17 22:33:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:33:08,133 INFO L93 Difference]: Finished difference Result 187 states and 381 transitions. [2020-04-17 22:33:08,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:33:08,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:33:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:33:08,134 INFO L225 Difference]: With dead ends: 187 [2020-04-17 22:33:08,134 INFO L226 Difference]: Without dead ends: 61 [2020-04-17 22:33:08,135 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-17 22:33:08,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-17 22:33:08,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-17 22:33:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-17 22:33:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 114 transitions. [2020-04-17 22:33:08,138 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 114 transitions. Word has length 18 [2020-04-17 22:33:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:33:08,138 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 114 transitions. [2020-04-17 22:33:08,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:33:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 114 transitions. [2020-04-17 22:33:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:33:08,139 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:33:08,139 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:33:08,139 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:33:08,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:33:08,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1548207031, now seen corresponding path program 3 times [2020-04-17 22:33:08,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:33:08,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513080094] [2020-04-17 22:33:08,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:33:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:33:08,192 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 22:33:08,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513080094] [2020-04-17 22:33:08,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:33:08,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:33:08,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322600895] [2020-04-17 22:33:08,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:33:08,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:33:08,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:33:08,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:33:08,195 INFO L87 Difference]: Start difference. First operand 61 states and 114 transitions. Second operand 5 states. [2020-04-17 22:33:08,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:33:08,219 INFO L93 Difference]: Finished difference Result 75 states and 136 transitions. [2020-04-17 22:33:08,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:33:08,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:33:08,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:33:08,221 INFO L225 Difference]: With dead ends: 75 [2020-04-17 22:33:08,221 INFO L226 Difference]: Without dead ends: 55 [2020-04-17 22:33:08,221 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:33:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-17 22:33:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-17 22:33:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-17 22:33:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-04-17 22:33:08,226 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-04-17 22:33:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:33:08,227 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-04-17 22:33:08,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:33:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-04-17 22:33:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:33:08,227 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:33:08,228 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:33:08,228 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:33:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:33:08,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1271535879, now seen corresponding path program 4 times [2020-04-17 22:33:08,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:33:08,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520616175] [2020-04-17 22:33:08,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:33:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:33:08,270 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 22:33:08,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520616175] [2020-04-17 22:33:08,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:33:08,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:33:08,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756538528] [2020-04-17 22:33:08,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:33:08,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:33:08,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:33:08,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:33:08,272 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-04-17 22:33:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:33:08,284 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-04-17 22:33:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:33:08,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 22:33:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:33:08,285 INFO L225 Difference]: With dead ends: 54 [2020-04-17 22:33:08,285 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:33:08,285 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 22:33:08,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:33:08,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:33:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:33:08,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:33:08,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 22:33:08,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:33:08,287 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:33:08,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:33:08,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:33:08,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:33:08,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:33:08 BasicIcfg [2020-04-17 22:33:08,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:33:08,308 INFO L168 Benchmark]: Toolchain (without parser) took 4468.59 ms. Allocated memory was 143.7 MB in the beginning and 251.1 MB in the end (delta: 107.5 MB). Free memory was 98.6 MB in the beginning and 217.1 MB in the end (delta: -118.6 MB). Peak memory consumption was 121.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:33:08,308 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 143.7 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:33:08,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.20 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 96.7 MB in the beginning and 157.2 MB in the end (delta: -60.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:33:08,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.46 ms. Allocated memory is still 201.3 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:33:08,311 INFO L168 Benchmark]: Boogie Preprocessor took 36.27 ms. Allocated memory is still 201.3 MB. Free memory was 155.2 MB in the beginning and 154.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:33:08,311 INFO L168 Benchmark]: RCFGBuilder took 434.70 ms. Allocated memory is still 201.3 MB. Free memory was 154.2 MB in the beginning and 131.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:33:08,312 INFO L168 Benchmark]: TraceAbstraction took 3246.59 ms. Allocated memory was 201.3 MB in the beginning and 251.1 MB in the end (delta: 49.8 MB). Free memory was 131.7 MB in the beginning and 217.1 MB in the end (delta: -85.5 MB). Peak memory consumption was 97.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:33:08,316 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 143.7 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.20 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 96.7 MB in the beginning and 157.2 MB in the end (delta: -60.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.46 ms. Allocated memory is still 201.3 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.27 ms. Allocated memory is still 201.3 MB. Free memory was 155.2 MB in the beginning and 154.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.70 ms. Allocated memory is still 201.3 MB. Free memory was 154.2 MB in the beginning and 131.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3246.59 ms. Allocated memory was 201.3 MB in the beginning and 251.1 MB in the end (delta: 49.8 MB). Free memory was 131.7 MB in the beginning and 217.1 MB in the end (delta: -85.5 MB). Peak memory consumption was 97.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 160 SDtfs, 101 SDslu, 231 SDs, 0 SdLazy, 86 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s 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, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4188 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...