/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/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:23:26,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:23:26,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:23:26,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:23:26,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:23:26,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:23:26,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:23:26,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:23:26,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:23:26,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:23:26,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:23:26,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:23:26,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:23:26,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:23:26,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:23:26,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:23:26,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:23:26,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:23:26,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:23:26,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:23:26,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:23:26,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:23:26,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:23:26,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:23:26,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:23:26,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:23:26,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:23:26,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:23:26,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:23:26,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:23:26,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:23:26,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:23:26,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:23:26,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:23:26,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:23:26,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:23:26,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:23:26,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:23:26,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:23:26,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:23:26,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:23:26,783 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 22:23:26,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:23:26,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:23:26,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:23:26,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:23:26,798 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:23:26,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:23:26,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:23:26,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:23:26,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:23:26,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:23:26,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:23:26,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:23:26,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:23:26,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:23:26,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:23:26,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:23:26,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:23:26,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:23:26,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:23:26,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:23:26,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:23:26,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:23:26,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:23:26,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:23:26,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:23:26,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:23:26,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:23:26,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:23:26,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:23:27,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:23:27,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:23:27,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:23:27,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:23:27,082 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:23:27,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-04-17 22:23:27,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa11c80ff/9f32a17233c146349e383220117aff8d/FLAG7e3903d13 [2020-04-17 22:23:27,658 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:23:27,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-04-17 22:23:27,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa11c80ff/9f32a17233c146349e383220117aff8d/FLAG7e3903d13 [2020-04-17 22:23:27,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa11c80ff/9f32a17233c146349e383220117aff8d [2020-04-17 22:23:27,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:23:27,972 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:23:27,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:23:27,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:23:27,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:23:27,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:23:27" (1/1) ... [2020-04-17 22:23:27,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4411d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:27, skipping insertion in model container [2020-04-17 22:23:27,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:23:27" (1/1) ... [2020-04-17 22:23:27,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:23:28,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:23:28,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:23:28,527 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:23:28,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:23:28,653 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:23:28,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28 WrapperNode [2020-04-17 22:23:28,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:23:28,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:23:28,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:23:28,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:23:28,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:23:28,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:23:28,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:23:28,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:23:28,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (1/1) ... [2020-04-17 22:23:28,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:23:28,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:23:28,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:23:28,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:23:28,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (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 22:23:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:23:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:23:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:23:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:23:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:23:28,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:23:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:23:28,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:23:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:23:28,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:23:28,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:23:28,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:23:28,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:23:28,806 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 22:23:29,190 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:23:29,190 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:23:29,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:23:29 BoogieIcfgContainer [2020-04-17 22:23:29,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:23:29,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:23:29,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:23:29,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:23:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:23:27" (1/3) ... [2020-04-17 22:23:29,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:23:29, skipping insertion in model container [2020-04-17 22:23:29,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:23:28" (2/3) ... [2020-04-17 22:23:29,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:23:29, skipping insertion in model container [2020-04-17 22:23:29,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:23:29" (3/3) ... [2020-04-17 22:23:29,203 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2020-04-17 22:23:29,212 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:23:29,212 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:23:29,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:23:29,220 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:23:29,253 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,254 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,254 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,255 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,255 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,255 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,256 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,257 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,257 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,257 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,257 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,258 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,259 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,260 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,260 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,260 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,261 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,261 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,266 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,266 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,267 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,267 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,273 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,276 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,276 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,276 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,281 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,281 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,281 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,281 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:23:29,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:23:29,315 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:23:29,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:23:29,316 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:23:29,316 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:23:29,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:23:29,316 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:23:29,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:23:29,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:23:29,331 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-17 22:23:29,333 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 22:23:29,374 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 22:23:29,374 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:23:29,379 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 22:23:29,382 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 22:23:29,403 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 22:23:29,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:23:29,404 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 22:23:29,406 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-17 22:23:29,407 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:23:31,113 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2133 [2020-04-17 22:23:31,114 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 22:23:31,118 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-17 22:23:31,139 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-17 22:23:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-17 22:23:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:23:31,149 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:23:31,150 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:23:31,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:23:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:23:31,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1225676630, now seen corresponding path program 1 times [2020-04-17 22:23:31,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:23:31,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269302445] [2020-04-17 22:23:31,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:23:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:23:31,465 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 22:23:31,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269302445] [2020-04-17 22:23:31,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:23:31,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:23:31,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438717806] [2020-04-17 22:23:31,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:23:31,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:23:31,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:23:31,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:23:31,496 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-17 22:23:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:23:31,569 INFO L93 Difference]: Finished difference Result 218 states and 604 transitions. [2020-04-17 22:23:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:23:31,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:23:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:23:31,608 INFO L225 Difference]: With dead ends: 218 [2020-04-17 22:23:31,609 INFO L226 Difference]: Without dead ends: 170 [2020-04-17 22:23:31,613 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 [2020-04-17 22:23:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-17 22:23:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-17 22:23:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 22:23:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 452 transitions. [2020-04-17 22:23:31,708 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 452 transitions. Word has length 8 [2020-04-17 22:23:31,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:23:31,711 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 452 transitions. [2020-04-17 22:23:31,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:23:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 452 transitions. [2020-04-17 22:23:31,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:23:31,713 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:23:31,713 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:23:31,715 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:23:31,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:23:31,716 INFO L82 PathProgramCache]: Analyzing trace with hash 658729482, now seen corresponding path program 1 times [2020-04-17 22:23:31,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:23:31,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150258030] [2020-04-17 22:23:31,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:23:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:23:31,799 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 22:23:31,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150258030] [2020-04-17 22:23:31,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:23:31,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:23:31,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173811023] [2020-04-17 22:23:31,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:23:31,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:23:31,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:23:31,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:23:31,803 INFO L87 Difference]: Start difference. First operand 170 states and 452 transitions. Second operand 3 states. [2020-04-17 22:23:31,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:23:31,811 INFO L93 Difference]: Finished difference Result 160 states and 419 transitions. [2020-04-17 22:23:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:23:31,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:23:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:23:31,813 INFO L225 Difference]: With dead ends: 160 [2020-04-17 22:23:31,814 INFO L226 Difference]: Without dead ends: 160 [2020-04-17 22:23:31,814 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 [2020-04-17 22:23:31,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-04-17 22:23:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-04-17 22:23:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-04-17 22:23:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 419 transitions. [2020-04-17 22:23:31,831 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 419 transitions. Word has length 9 [2020-04-17 22:23:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:23:31,831 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 419 transitions. [2020-04-17 22:23:31,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:23:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 419 transitions. [2020-04-17 22:23:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:23:31,833 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:23:31,833 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:23:31,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:23:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:23:31,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1054810361, now seen corresponding path program 1 times [2020-04-17 22:23:31,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:23:31,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41654302] [2020-04-17 22:23:31,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:23:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:23:31,896 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 22:23:31,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41654302] [2020-04-17 22:23:31,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:23:31,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:23:31,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713410473] [2020-04-17 22:23:31,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:23:31,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:23:31,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:23:31,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:23:31,898 INFO L87 Difference]: Start difference. First operand 160 states and 419 transitions. Second operand 4 states. [2020-04-17 22:23:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:23:31,923 INFO L93 Difference]: Finished difference Result 220 states and 567 transitions. [2020-04-17 22:23:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:23:31,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 22:23:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:23:31,926 INFO L225 Difference]: With dead ends: 220 [2020-04-17 22:23:31,926 INFO L226 Difference]: Without dead ends: 148 [2020-04-17 22:23:31,927 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:23:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-04-17 22:23:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-04-17 22:23:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-04-17 22:23:31,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 377 transitions. [2020-04-17 22:23:31,942 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 377 transitions. Word has length 10 [2020-04-17 22:23:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:23:31,943 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 377 transitions. [2020-04-17 22:23:31,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:23:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 377 transitions. [2020-04-17 22:23:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:23:31,945 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:23:31,945 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:23:31,946 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:23:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:23:31,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1054223531, now seen corresponding path program 2 times [2020-04-17 22:23:31,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:23:31,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808198137] [2020-04-17 22:23:31,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:23:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:23:32,075 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 22:23:32,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808198137] [2020-04-17 22:23:32,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:23:32,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:23:32,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718912644] [2020-04-17 22:23:32,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:23:32,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:23:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:23:32,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:23:32,080 INFO L87 Difference]: Start difference. First operand 148 states and 377 transitions. Second operand 4 states. [2020-04-17 22:23:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:23:32,127 INFO L93 Difference]: Finished difference Result 168 states and 391 transitions. [2020-04-17 22:23:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:23:32,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 22:23:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:23:32,130 INFO L225 Difference]: With dead ends: 168 [2020-04-17 22:23:32,130 INFO L226 Difference]: Without dead ends: 126 [2020-04-17 22:23:32,131 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:23:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-04-17 22:23:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-04-17 22:23:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-04-17 22:23:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 291 transitions. [2020-04-17 22:23:32,141 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 291 transitions. Word has length 10 [2020-04-17 22:23:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:23:32,141 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 291 transitions. [2020-04-17 22:23:32,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:23:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 291 transitions. [2020-04-17 22:23:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:23:32,142 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:23:32,143 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:23:32,143 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:23:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:23:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1670186442, now seen corresponding path program 1 times [2020-04-17 22:23:32,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:23:32,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358633704] [2020-04-17 22:23:32,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:23:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:23:32,259 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 22:23:32,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358633704] [2020-04-17 22:23:32,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:23:32,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:23:32,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377186445] [2020-04-17 22:23:32,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:23:32,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:23:32,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:23:32,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:23:32,262 INFO L87 Difference]: Start difference. First operand 126 states and 291 transitions. Second operand 5 states. [2020-04-17 22:23:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:23:32,322 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-17 22:23:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:23:32,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-17 22:23:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:23:32,324 INFO L225 Difference]: With dead ends: 121 [2020-04-17 22:23:32,324 INFO L226 Difference]: Without dead ends: 93 [2020-04-17 22:23:32,324 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:23:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-17 22:23:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-17 22:23:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-17 22:23:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-17 22:23:32,336 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-04-17 22:23:32,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:23:32,336 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-17 22:23:32,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:23:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-17 22:23:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:23:32,338 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:23:32,338 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:23:32,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:23:32,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:23:32,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1269858217, now seen corresponding path program 1 times [2020-04-17 22:23:32,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:23:32,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98976173] [2020-04-17 22:23:32,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:23:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:23:32,462 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 22:23:32,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98976173] [2020-04-17 22:23:32,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:23:32,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:23:32,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953203635] [2020-04-17 22:23:32,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:23:32,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:23:32,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:23:32,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:23:32,465 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 6 states. [2020-04-17 22:23:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:23:32,562 INFO L93 Difference]: Finished difference Result 87 states and 178 transitions. [2020-04-17 22:23:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:23:32,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-04-17 22:23:32,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:23:32,564 INFO L225 Difference]: With dead ends: 87 [2020-04-17 22:23:32,564 INFO L226 Difference]: Without dead ends: 78 [2020-04-17 22:23:32,565 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 [2020-04-17 22:23:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-04-17 22:23:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-04-17 22:23:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-04-17 22:23:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2020-04-17 22:23:32,575 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 13 [2020-04-17 22:23:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:23:32,580 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2020-04-17 22:23:32,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:23:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2020-04-17 22:23:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:23:32,581 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:23:32,582 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:23:32,582 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:23:32,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:23:32,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1906464189, now seen corresponding path program 1 times [2020-04-17 22:23:32,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:23:32,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595574322] [2020-04-17 22:23:32,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:23:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:23:32,633 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 22:23:32,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595574322] [2020-04-17 22:23:32,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:23:32,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:23:32,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95981406] [2020-04-17 22:23:32,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:23:32,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:23:32,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:23:32,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:23:32,635 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand 4 states. [2020-04-17 22:23:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:23:32,659 INFO L93 Difference]: Finished difference Result 91 states and 183 transitions. [2020-04-17 22:23:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:23:32,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-04-17 22:23:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:23:32,660 INFO L225 Difference]: With dead ends: 91 [2020-04-17 22:23:32,660 INFO L226 Difference]: Without dead ends: 33 [2020-04-17 22:23:32,661 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 22:23:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-04-17 22:23:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-04-17 22:23:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-04-17 22:23:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-04-17 22:23:32,663 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-04-17 22:23:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:23:32,663 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-04-17 22:23:32,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:23:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-17 22:23:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:23:32,664 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:23:32,664 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:23:32,664 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:23:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:23:32,665 INFO L82 PathProgramCache]: Analyzing trace with hash -867586631, now seen corresponding path program 2 times [2020-04-17 22:23:32,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:23:32,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694839513] [2020-04-17 22:23:32,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:23:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:23:32,690 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 22:23:32,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694839513] [2020-04-17 22:23:32,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:23:32,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:23:32,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417569206] [2020-04-17 22:23:32,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:23:32,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:23:32,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:23:32,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:23:32,692 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 3 states. [2020-04-17 22:23:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:23:32,697 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-04-17 22:23:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:23:32,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-17 22:23:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:23:32,698 INFO L225 Difference]: With dead ends: 32 [2020-04-17 22:23:32,698 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:23:32,699 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 22:23:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:23:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:23:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:23:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:23:32,700 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-17 22:23:32,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:23:32,700 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:23:32,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:23:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:23:32,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:23:32,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:23:32 BasicIcfg [2020-04-17 22:23:32,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:23:32,707 INFO L168 Benchmark]: Toolchain (without parser) took 4756.42 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 101.0 MB in the beginning and 196.0 MB in the end (delta: -94.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:23:32,708 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 22:23:32,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.67 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 99.1 MB in the beginning and 158.8 MB in the end (delta: -59.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:23:32,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.33 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:23:32,711 INFO L168 Benchmark]: Boogie Preprocessor took 27.29 ms. Allocated memory is still 202.4 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:23:32,712 INFO L168 Benchmark]: RCFGBuilder took 462.15 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 133.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:23:32,713 INFO L168 Benchmark]: TraceAbstraction took 3508.69 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 132.7 MB in the beginning and 196.0 MB in the end (delta: -63.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:23:32,717 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.67 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 99.1 MB in the beginning and 158.8 MB in the end (delta: -59.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.33 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.29 ms. Allocated memory is still 202.4 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.15 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 133.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3508.69 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 132.7 MB in the beginning and 196.0 MB in the end (delta: -63.3 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, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 608 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2133 CheckedPairsTotal, 57 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 142 SDtfs, 123 SDslu, 180 SDs, 0 SdLazy, 103 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 0.5s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2605 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...