/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:35:27,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:35:27,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:35:27,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:35:27,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:35:27,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:35:27,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:35:27,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:35:27,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:35:27,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:35:27,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:35:27,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:35:27,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:35:27,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:35:27,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:35:27,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:35:27,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:35:27,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:35:27,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:35:27,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:35:27,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:35:27,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:35:27,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:35:27,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:35:27,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:35:27,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:35:27,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:35:27,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:35:27,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:35:27,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:35:27,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:35:27,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:35:27,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:35:27,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:35:27,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:35:27,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:35:27,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:35:27,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:35:27,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:35:27,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:35:27,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:35:27,584 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 02:35:27,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:35:27,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:35:27,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:35:27,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:35:27,620 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:35:27,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:35:27,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:35:27,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:35:27,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:35:27,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:35:27,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:35:27,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:35:27,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:35:27,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:35:27,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:35:27,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:35:27,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:35:27,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:35:27,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:35:27,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:35:27,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:35:27,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:35:27,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:35:27,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:35:27,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:35:27,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:35:27,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:35:27,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:35:27,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:35:27,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:35:27,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:35:27,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:35:27,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:35:27,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:35:27,953 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:35:27,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-18 02:35:28,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fde0e17/ff167cc377e848ee89c4a23948915003/FLAG3f6ba3e81 [2020-04-18 02:35:28,594 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:35:28,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-18 02:35:28,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fde0e17/ff167cc377e848ee89c4a23948915003/FLAG3f6ba3e81 [2020-04-18 02:35:28,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fde0e17/ff167cc377e848ee89c4a23948915003 [2020-04-18 02:35:28,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:35:28,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:35:28,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:35:28,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:35:28,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:35:28,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:35:28" (1/1) ... [2020-04-18 02:35:28,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694972d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:28, skipping insertion in model container [2020-04-18 02:35:28,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:35:28" (1/1) ... [2020-04-18 02:35:28,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:35:28,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:35:29,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:35:29,456 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:35:29,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:35:29,597 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:35:29,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29 WrapperNode [2020-04-18 02:35:29,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:35:29,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:35:29,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:35:29,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:35:29,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:35:29,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:35:29,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:35:29,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:35:29,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (1/1) ... [2020-04-18 02:35:29,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:35:29,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:35:29,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:35:29,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:35:29,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (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 02:35:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:35:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:35:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:35:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:35:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:35:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:35:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:35:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:35:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:35:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:35:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:35:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:35:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:35:29,740 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 02:35:30,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:35:30,102 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:35:30,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:35:30 BoogieIcfgContainer [2020-04-18 02:35:30,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:35:30,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:35:30,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:35:30,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:35:30,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:35:28" (1/3) ... [2020-04-18 02:35:30,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589e36f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:35:30, skipping insertion in model container [2020-04-18 02:35:30,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:29" (2/3) ... [2020-04-18 02:35:30,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589e36f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:35:30, skipping insertion in model container [2020-04-18 02:35:30,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:35:30" (3/3) ... [2020-04-18 02:35:30,114 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-04-18 02:35:30,123 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:35:30,124 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:35:30,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:35:30,132 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:35:30,156 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,156 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,157 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,157 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,158 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,158 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,158 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,159 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,159 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,159 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,160 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,160 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,160 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,160 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,161 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,161 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,161 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,162 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,167 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,168 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,168 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,168 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,184 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,184 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,185 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,195 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,195 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,195 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,196 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:30,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:35:30,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:35:30,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:35:30,225 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:35:30,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:35:30,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:35:30,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:35:30,226 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:35:30,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:35:30,241 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:35:30,243 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:35:30,292 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:35:30,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:35:30,298 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 51 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 02:35:30,301 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:35:30,320 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:35:30,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:35:30,321 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 51 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 02:35:30,323 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:35:30,325 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:35:31,736 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-18 02:35:31,874 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:35:31,962 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 02:35:31,962 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:35:31,966 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:35:32,000 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:35:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:35:32,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:35:32,012 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:32,014 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:32,014 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:32,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 02:35:32,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:32,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208035236] [2020-04-18 02:35:32,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:32,342 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 02:35:32,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208035236] [2020-04-18 02:35:32,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:32,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:35:32,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104444713] [2020-04-18 02:35:32,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:35:32,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:32,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:35:32,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:32,367 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:35:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:32,408 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:35:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:35:32,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:35:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:32,426 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:35:32,426 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:35:32,427 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:35:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:35:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:35:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:35:32,493 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:35:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:32,495 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:35:32,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:35:32,495 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:35:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:35:32,496 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:32,497 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:32,497 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:32,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:32,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1925985154, now seen corresponding path program 1 times [2020-04-18 02:35:32,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:32,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513641603] [2020-04-18 02:35:32,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:32,568 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 02:35:32,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513641603] [2020-04-18 02:35:32,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:32,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:35:32,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483124887] [2020-04-18 02:35:32,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:35:32,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:32,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:35:32,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:32,572 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 02:35:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:32,591 INFO L93 Difference]: Finished difference Result 284 states and 746 transitions. [2020-04-18 02:35:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:35:32,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:35:32,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:32,594 INFO L225 Difference]: With dead ends: 284 [2020-04-18 02:35:32,594 INFO L226 Difference]: Without dead ends: 164 [2020-04-18 02:35:32,595 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:32,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-04-18 02:35:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-04-18 02:35:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-04-18 02:35:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-04-18 02:35:32,611 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 10 [2020-04-18 02:35:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:32,612 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-04-18 02:35:32,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:35:32,612 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-04-18 02:35:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:35:32,613 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:32,614 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:32,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:32,614 INFO L82 PathProgramCache]: Analyzing trace with hash -424003265, now seen corresponding path program 1 times [2020-04-18 02:35:32,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:32,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853815790] [2020-04-18 02:35:32,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:32,681 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 02:35:32,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853815790] [2020-04-18 02:35:32,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:32,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:35:32,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466074009] [2020-04-18 02:35:32,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:35:32,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:32,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:35:32,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:32,684 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 3 states. [2020-04-18 02:35:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:32,693 INFO L93 Difference]: Finished difference Result 158 states and 403 transitions. [2020-04-18 02:35:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:35:32,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 02:35:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:32,696 INFO L225 Difference]: With dead ends: 158 [2020-04-18 02:35:32,697 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 02:35:32,698 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:32,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 02:35:32,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 02:35:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 02:35:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 403 transitions. [2020-04-18 02:35:32,724 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 403 transitions. Word has length 11 [2020-04-18 02:35:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:32,724 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 403 transitions. [2020-04-18 02:35:32,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:35:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 403 transitions. [2020-04-18 02:35:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:35:32,726 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:32,726 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:32,727 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash -259200532, now seen corresponding path program 1 times [2020-04-18 02:35:32,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:32,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858441996] [2020-04-18 02:35:32,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:32,806 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 02:35:32,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858441996] [2020-04-18 02:35:32,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:32,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:35:32,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905743318] [2020-04-18 02:35:32,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:35:32,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:32,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:35:32,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:35:32,810 INFO L87 Difference]: Start difference. First operand 158 states and 403 transitions. Second operand 4 states. [2020-04-18 02:35:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:32,840 INFO L93 Difference]: Finished difference Result 188 states and 468 transitions. [2020-04-18 02:35:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:35:32,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:35:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:32,842 INFO L225 Difference]: With dead ends: 188 [2020-04-18 02:35:32,842 INFO L226 Difference]: Without dead ends: 110 [2020-04-18 02:35:32,842 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 02:35:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-04-18 02:35:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-04-18 02:35:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-04-18 02:35:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-04-18 02:35:32,850 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 12 [2020-04-18 02:35:32,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:32,851 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-04-18 02:35:32,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:35:32,851 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-04-18 02:35:32,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:35:32,854 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:32,854 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:32,855 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:32,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:32,855 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-04-18 02:35:32,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:32,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543466141] [2020-04-18 02:35:32,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:32,932 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 02:35:32,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543466141] [2020-04-18 02:35:32,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:32,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:35:32,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444356801] [2020-04-18 02:35:32,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:35:32,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:35:32,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:35:32,939 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-04-18 02:35:32,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:32,977 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-04-18 02:35:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:35:32,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:35:32,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:32,979 INFO L225 Difference]: With dead ends: 128 [2020-04-18 02:35:32,979 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:35:32,981 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 02:35:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:35:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:35:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:35:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-04-18 02:35:32,993 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-04-18 02:35:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:32,996 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-04-18 02:35:32,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:35:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-04-18 02:35:32,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:35:32,997 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:32,997 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:32,998 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:32,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-04-18 02:35:33,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:33,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493927913] [2020-04-18 02:35:33,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:33,086 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 02:35:33,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493927913] [2020-04-18 02:35:33,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:33,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:35:33,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070661244] [2020-04-18 02:35:33,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:35:33,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:35:33,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:35:33,089 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 5 states. [2020-04-18 02:35:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:33,137 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-04-18 02:35:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:35:33,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:35:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:33,139 INFO L225 Difference]: With dead ends: 99 [2020-04-18 02:35:33,139 INFO L226 Difference]: Without dead ends: 79 [2020-04-18 02:35:33,139 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:35:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-04-18 02:35:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-04-18 02:35:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-04-18 02:35:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-04-18 02:35:33,149 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-04-18 02:35:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:33,150 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-04-18 02:35:33,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:35:33,151 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-04-18 02:35:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:35:33,152 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:33,152 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:33,152 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-04-18 02:35:33,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:33,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879082653] [2020-04-18 02:35:33,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:33,238 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 02:35:33,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879082653] [2020-04-18 02:35:33,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:33,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:35:33,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928349405] [2020-04-18 02:35:33,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:35:33,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:33,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:35:33,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:35:33,240 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 6 states. [2020-04-18 02:35:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:33,312 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-04-18 02:35:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:35:33,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:35:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:33,314 INFO L225 Difference]: With dead ends: 76 [2020-04-18 02:35:33,314 INFO L226 Difference]: Without dead ends: 69 [2020-04-18 02:35:33,314 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 02:35:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-18 02:35:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-18 02:35:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-18 02:35:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-04-18 02:35:33,320 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-04-18 02:35:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:33,321 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-04-18 02:35:33,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:35:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-04-18 02:35:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:35:33,322 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:33,323 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:33,323 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:33,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 02:35:33,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:33,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761413209] [2020-04-18 02:35:33,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:33,393 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 02:35:33,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761413209] [2020-04-18 02:35:33,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:33,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:35:33,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499623686] [2020-04-18 02:35:33,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:35:33,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:35:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:35:33,396 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-04-18 02:35:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:33,421 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-04-18 02:35:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:35:33,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:35:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:33,422 INFO L225 Difference]: With dead ends: 68 [2020-04-18 02:35:33,422 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:35:33,423 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:35:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:35:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:35:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:35:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:35:33,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:35:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:33,424 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:35:33,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:35:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:35:33,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:35:33,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:35:33 BasicIcfg [2020-04-18 02:35:33,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:35:33,439 INFO L168 Benchmark]: Toolchain (without parser) took 4569.36 ms. Allocated memory was 138.9 MB in the beginning and 245.4 MB in the end (delta: 106.4 MB). Free memory was 102.7 MB in the beginning and 191.7 MB in the end (delta: -89.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:33,441 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:35:33,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.14 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 160.2 MB in the end (delta: -59.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:33,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.55 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:33,448 INFO L168 Benchmark]: Boogie Preprocessor took 26.83 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:33,452 INFO L168 Benchmark]: RCFGBuilder took 430.58 ms. Allocated memory is still 203.4 MB. Free memory was 156.3 MB in the beginning and 134.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:33,453 INFO L168 Benchmark]: TraceAbstraction took 3323.76 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 134.3 MB in the beginning and 191.7 MB in the end (delta: -57.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:35:33,466 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.14 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 160.2 MB in the end (delta: -59.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.55 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.83 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.58 ms. Allocated memory is still 203.4 MB. Free memory was 156.3 MB in the beginning and 134.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3323.76 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 134.3 MB in the beginning and 191.7 MB in the end (delta: -57.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 149 SDtfs, 116 SDslu, 168 SDs, 0 SdLazy, 105 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3024 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...