/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/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:21:44,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:21:44,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:21:44,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:21:44,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:21:44,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:21:44,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:21:44,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:21:44,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:21:44,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:21:44,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:21:44,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:21:44,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:21:44,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:21:44,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:21:44,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:21:44,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:21:44,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:21:44,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:21:44,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:21:44,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:21:44,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:21:44,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:21:44,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:21:44,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:21:44,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:21:44,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:21:44,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:21:44,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:21:44,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:21:44,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:21:44,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:21:44,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:21:44,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:21:44,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:21:44,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:21:44,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:21:44,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:21:44,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:21:44,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:21:44,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:21:44,834 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 02:21:44,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:21:44,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:21:44,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:21:44,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:21:44,871 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:21:44,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:21:44,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:21:44,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:21:44,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:21:44,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:21:44,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:21:44,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:21:44,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:21:44,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:21:44,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:21:44,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:21:44,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:21:44,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:21:44,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:21:44,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:21:44,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:21:44,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:21:44,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:21:44,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:21:44,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:21:44,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:21:44,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:21:44,882 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:21:44,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:21:44,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:21:45,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:21:45,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:21:45,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:21:45,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:21:45,183 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:21:45,184 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-04-18 02:21:45,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3175878f/751088c98c984e4781124817a3b23566/FLAGd25f97f1a [2020-04-18 02:21:45,819 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:21:45,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-04-18 02:21:45,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3175878f/751088c98c984e4781124817a3b23566/FLAGd25f97f1a [2020-04-18 02:21:46,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3175878f/751088c98c984e4781124817a3b23566 [2020-04-18 02:21:46,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:21:46,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:21:46,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:21:46,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:21:46,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:21:46,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be418e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46, skipping insertion in model container [2020-04-18 02:21:46,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:21:46,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:21:46,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:21:46,729 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:21:46,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:21:46,887 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:21:46,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46 WrapperNode [2020-04-18 02:21:46,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:21:46,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:21:46,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:21:46,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:21:46,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:21:46,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:21:46,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:21:46,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:21:46,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (1/1) ... [2020-04-18 02:21:46,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:21:46,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:21:46,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:21:46,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:21:46,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (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 02:21:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:21:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:21:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:21:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:21:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:21:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:21:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:21:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:21:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:21:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:21:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:21:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:21:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:21:47,057 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 02:21:47,453 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:21:47,454 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:21:47,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:21:47 BoogieIcfgContainer [2020-04-18 02:21:47,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:21:47,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:21:47,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:21:47,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:21:47,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:21:46" (1/3) ... [2020-04-18 02:21:47,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330fbb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:21:47, skipping insertion in model container [2020-04-18 02:21:47,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:46" (2/3) ... [2020-04-18 02:21:47,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330fbb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:21:47, skipping insertion in model container [2020-04-18 02:21:47,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:21:47" (3/3) ... [2020-04-18 02:21:47,470 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-04-18 02:21:47,480 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:21:47,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:21:47,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:21:47,488 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:21:47,513 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,514 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,514 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,514 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,515 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,515 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,515 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,516 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,516 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,518 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,518 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,518 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,519 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,519 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,519 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,520 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,520 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,520 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,525 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,525 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,525 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,526 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,531 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,532 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,532 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,532 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,537 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,537 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,537 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,538 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:47,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:21:47,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:21:47,575 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:21:47,575 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:21:47,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:21:47,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:21:47,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:21:47,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:21:47,576 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:21:47,591 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:21:47,593 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:21:47,640 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:21:47,641 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:21:47,646 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:21:47,649 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:21:47,679 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:21:47,679 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:21:47,680 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:21:47,682 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:21:47,683 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:21:49,151 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:21:49,320 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-18 02:21:49,359 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 02:21:49,359 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 02:21:49,363 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:21:49,390 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:21:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:21:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:21:49,400 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:49,401 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:49,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:49,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 02:21:49,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:49,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806543366] [2020-04-18 02:21:49,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:49,698 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 02:21:49,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806543366] [2020-04-18 02:21:49,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:49,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:21:49,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23142772] [2020-04-18 02:21:49,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:49,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:49,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:49,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:49,725 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:21:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:49,805 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:21:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:49,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:21:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:49,839 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:21:49,839 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:21:49,841 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 02:21:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:21:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:21:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:21:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:21:49,918 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:21:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:49,919 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:21:49,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:21:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:21:49,922 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:49,923 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:49,923 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:49,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1299119847, now seen corresponding path program 1 times [2020-04-18 02:21:49,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:49,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611312503] [2020-04-18 02:21:49,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,007 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 02:21:50,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611312503] [2020-04-18 02:21:50,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:50,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048967320] [2020-04-18 02:21:50,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:50,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:50,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:50,010 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-04-18 02:21:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,025 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 02:21:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:50,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:21:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,028 INFO L225 Difference]: With dead ends: 202 [2020-04-18 02:21:50,029 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:21:50,030 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 02:21:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:21:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:21:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:21:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:21:50,046 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 02:21:50,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,047 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:21:50,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:21:50,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:21:50,049 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,049 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:50,049 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1618060859, now seen corresponding path program 1 times [2020-04-18 02:21:50,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235306702] [2020-04-18 02:21:50,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,114 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 02:21:50,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235306702] [2020-04-18 02:21:50,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:21:50,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32875629] [2020-04-18 02:21:50,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:50,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:50,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:50,116 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 02:21:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,123 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-18 02:21:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:50,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:21:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,128 INFO L225 Difference]: With dead ends: 194 [2020-04-18 02:21:50,128 INFO L226 Difference]: Without dead ends: 194 [2020-04-18 02:21:50,129 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 02:21:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-18 02:21:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-18 02:21:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-18 02:21:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-18 02:21:50,142 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-18 02:21:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,142 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-18 02:21:50,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-18 02:21:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:21:50,144 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,144 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:50,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1106664046, now seen corresponding path program 1 times [2020-04-18 02:21:50,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266842444] [2020-04-18 02:21:50,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,198 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 02:21:50,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266842444] [2020-04-18 02:21:50,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:50,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394894232] [2020-04-18 02:21:50,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:50,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:50,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:50,200 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-04-18 02:21:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,225 INFO L93 Difference]: Finished difference Result 230 states and 596 transitions. [2020-04-18 02:21:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:21:50,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:21:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,226 INFO L225 Difference]: With dead ends: 230 [2020-04-18 02:21:50,227 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 02:21:50,227 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 02:21:50,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 02:21:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 02:21:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 02:21:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-18 02:21:50,234 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 11 [2020-04-18 02:21:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,234 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-18 02:21:50,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-18 02:21:50,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:21:50,235 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,236 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:50,236 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-04-18 02:21:50,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854775536] [2020-04-18 02:21:50,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,296 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 02:21:50,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854775536] [2020-04-18 02:21:50,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:21:50,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223968260] [2020-04-18 02:21:50,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:50,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:50,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:50,299 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-04-18 02:21:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,341 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-04-18 02:21:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:21:50,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:21:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,343 INFO L225 Difference]: With dead ends: 158 [2020-04-18 02:21:50,343 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 02:21:50,344 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:21:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 02:21:50,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 02:21:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 02:21:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-04-18 02:21:50,350 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-04-18 02:21:50,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,351 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-04-18 02:21:50,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-04-18 02:21:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:21:50,352 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,352 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:50,352 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-04-18 02:21:50,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744385843] [2020-04-18 02:21:50,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,459 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 02:21:50,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744385843] [2020-04-18 02:21:50,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:50,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434385211] [2020-04-18 02:21:50,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:50,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:50,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:50,462 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-04-18 02:21:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,512 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-04-18 02:21:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:21:50,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:21:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,514 INFO L225 Difference]: With dead ends: 127 [2020-04-18 02:21:50,514 INFO L226 Difference]: Without dead ends: 87 [2020-04-18 02:21:50,515 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 02:21:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-04-18 02:21:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-04-18 02:21:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-04-18 02:21:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-04-18 02:21:50,520 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-04-18 02:21:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,521 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-04-18 02:21:50,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-04-18 02:21:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:21:50,522 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,522 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:50,523 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,523 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-18 02:21:50,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582870406] [2020-04-18 02:21:50,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,611 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 02:21:50,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582870406] [2020-04-18 02:21:50,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:21:50,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938284255] [2020-04-18 02:21:50,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:21:50,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:21:50,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:21:50,614 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 5 states. [2020-04-18 02:21:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,671 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-04-18 02:21:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:21:50,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:21:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,672 INFO L225 Difference]: With dead ends: 90 [2020-04-18 02:21:50,672 INFO L226 Difference]: Without dead ends: 65 [2020-04-18 02:21:50,673 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 02:21:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-04-18 02:21:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-04-18 02:21:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-04-18 02:21:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-04-18 02:21:50,676 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-04-18 02:21:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,677 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-04-18 02:21:50,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:21:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-04-18 02:21:50,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:21:50,678 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,678 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:50,678 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,679 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-18 02:21:50,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265878751] [2020-04-18 02:21:50,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,779 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 02:21:50,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265878751] [2020-04-18 02:21:50,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:21:50,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695848599] [2020-04-18 02:21:50,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:21:50,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:21:50,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:21:50,783 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 6 states. [2020-04-18 02:21:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,833 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-04-18 02:21:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:21:50,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:21:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,835 INFO L225 Difference]: With dead ends: 62 [2020-04-18 02:21:50,835 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 02:21:50,835 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 02:21:50,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 02:21:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 02:21:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 02:21:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-04-18 02:21:50,838 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-04-18 02:21:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,838 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-04-18 02:21:50,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:21:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-04-18 02:21:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:21:50,839 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,839 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 02:21:50,840 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,840 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-18 02:21:50,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426717714] [2020-04-18 02:21:50,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,875 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 02:21:50,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426717714] [2020-04-18 02:21:50,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:21:50,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377633611] [2020-04-18 02:21:50,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:50,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:50,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:50,877 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-04-18 02:21:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,895 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-04-18 02:21:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:21:50,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:21:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,897 INFO L225 Difference]: With dead ends: 63 [2020-04-18 02:21:50,897 INFO L226 Difference]: Without dead ends: 35 [2020-04-18 02:21:50,897 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:21:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-04-18 02:21:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-04-18 02:21:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-04-18 02:21:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-04-18 02:21:50,899 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-04-18 02:21:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,900 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-04-18 02:21:50,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-04-18 02:21:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:21:50,901 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,901 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 02:21:50,901 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,901 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-04-18 02:21:50,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196331010] [2020-04-18 02:21:50,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:50,963 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 02:21:50,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196331010] [2020-04-18 02:21:50,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:50,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:21:50,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362798511] [2020-04-18 02:21:50,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:50,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:50,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:50,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:50,966 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-04-18 02:21:50,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:50,983 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-04-18 02:21:50,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:21:50,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:21:50,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:50,984 INFO L225 Difference]: With dead ends: 48 [2020-04-18 02:21:50,984 INFO L226 Difference]: Without dead ends: 30 [2020-04-18 02:21:50,985 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:21:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-04-18 02:21:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-04-18 02:21:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-18 02:21:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-04-18 02:21:50,986 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-04-18 02:21:50,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:50,987 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-04-18 02:21:50,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-04-18 02:21:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:21:50,987 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:50,987 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 02:21:50,988 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:50,988 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-04-18 02:21:50,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:50,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485057302] [2020-04-18 02:21:50,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:51,047 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 02:21:51,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485057302] [2020-04-18 02:21:51,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:51,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:51,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956417525] [2020-04-18 02:21:51,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:51,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:51,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:51,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:51,050 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-04-18 02:21:51,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:51,064 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-04-18 02:21:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:21:51,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:21:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:51,066 INFO L225 Difference]: With dead ends: 29 [2020-04-18 02:21:51,067 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:21:51,067 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 02:21:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:21:51,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:21:51,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:21:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:21:51,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:21:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:51,069 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:21:51,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:21:51,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:21:51,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:21:51 BasicIcfg [2020-04-18 02:21:51,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:21:51,077 INFO L168 Benchmark]: Toolchain (without parser) took 4970.61 ms. Allocated memory was 144.7 MB in the beginning and 246.4 MB in the end (delta: 101.7 MB). Free memory was 102.7 MB in the beginning and 147.6 MB in the end (delta: -44.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:51,081 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 144.7 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:21:51,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.10 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 100.6 MB in the beginning and 161.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:51,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.71 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:51,083 INFO L168 Benchmark]: Boogie Preprocessor took 24.59 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:51,085 INFO L168 Benchmark]: RCFGBuilder took 471.61 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 135.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:51,089 INFO L168 Benchmark]: TraceAbstraction took 3612.54 ms. Allocated memory was 204.5 MB in the beginning and 246.4 MB in the end (delta: 41.9 MB). Free memory was 135.3 MB in the beginning and 147.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:51,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 144.7 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.10 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 100.6 MB in the beginning and 161.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 72.71 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.59 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.61 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 135.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3612.54 ms. Allocated memory was 204.5 MB in the beginning and 246.4 MB in the end (delta: 41.9 MB). Free memory was 135.3 MB in the beginning and 147.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 29.7 MB. 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, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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: 3.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 214 SDtfs, 159 SDslu, 247 SDs, 0 SdLazy, 138 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 4629 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...