/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-ext/45_monabsex1_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 23:14:48,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 23:14:48,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 23:14:48,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 23:14:48,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 23:14:48,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 23:14:48,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 23:14:48,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 23:14:48,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 23:14:48,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 23:14:48,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 23:14:48,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 23:14:48,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 23:14:48,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 23:14:48,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 23:14:48,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 23:14:48,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 23:14:48,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 23:14:48,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 23:14:48,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 23:14:48,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 23:14:48,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 23:14:48,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 23:14:48,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 23:14:48,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 23:14:48,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 23:14:48,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 23:14:48,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 23:14:48,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 23:14:48,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 23:14:48,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 23:14:48,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 23:14:48,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 23:14:48,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 23:14:48,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 23:14:48,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 23:14:48,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 23:14:48,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 23:14:48,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 23:14:48,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 23:14:48,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 23:14:48,849 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 [2020-04-17 23:14:48,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 23:14:48,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 23:14:48,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 23:14:48,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 23:14:48,866 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 23:14:48,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 23:14:48,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 23:14:48,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 23:14:48,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 23:14:48,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 23:14:48,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 23:14:48,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 23:14:48,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 23:14:48,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 23:14:48,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 23:14:48,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 23:14:48,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 23:14:48,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 23:14:48,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 23:14:48,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 23:14:48,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 23:14:48,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 23:14:48,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 23:14:48,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 23:14:48,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 23:14:48,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 23:14:48,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 23:14:48,870 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-17 23:14:48,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 23:14:48,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 23:14:49,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 23:14:49,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 23:14:49,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 23:14:49,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 23:14:49,232 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 23:14:49,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-04-17 23:14:49,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9246d2f/936fbedbc78548c89477774aea105df3/FLAGe1448c7a6 [2020-04-17 23:14:49,815 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 23:14:49,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-04-17 23:14:49,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9246d2f/936fbedbc78548c89477774aea105df3/FLAGe1448c7a6 [2020-04-17 23:14:50,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9246d2f/936fbedbc78548c89477774aea105df3 [2020-04-17 23:14:50,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 23:14:50,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 23:14:50,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 23:14:50,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 23:14:50,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 23:14:50,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fb9486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50, skipping insertion in model container [2020-04-17 23:14:50,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 23:14:50,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 23:14:50,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:14:50,780 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 23:14:50,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:14:50,903 INFO L208 MainTranslator]: Completed translation [2020-04-17 23:14:50,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50 WrapperNode [2020-04-17 23:14:50,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 23:14:50,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 23:14:50,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 23:14:50,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 23:14:50,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 23:14:50,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 23:14:50,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 23:14:50,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 23:14:50,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (1/1) ... [2020-04-17 23:14:50,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 23:14:50,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 23:14:50,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 23:14:50,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 23:14:50,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (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 23:14:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 23:14:51,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 23:14:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 23:14:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 23:14:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 23:14:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 23:14:51,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 23:14:51,048 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 23:14:51,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 23:14:51,401 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-04-17 23:14:51,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:14:51 BoogieIcfgContainer [2020-04-17 23:14:51,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 23:14:51,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 23:14:51,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 23:14:51,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 23:14:51,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 11:14:50" (1/3) ... [2020-04-17 23:14:51,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3018b785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:14:51, skipping insertion in model container [2020-04-17 23:14:51,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:14:50" (2/3) ... [2020-04-17 23:14:51,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3018b785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:14:51, skipping insertion in model container [2020-04-17 23:14:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:14:51" (3/3) ... [2020-04-17 23:14:51,414 INFO L109 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2020-04-17 23:14:51,425 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 23:14:51,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 23:14:51,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 23:14:51,433 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 23:14:51,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,459 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,459 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,459 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,465 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,466 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:51,490 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 23:14:51,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:14:51,509 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:14:51,510 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:14:51,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:14:51,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:14:51,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:14:51,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:14:51,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:14:51,522 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 33 transitions, 71 flow [2020-04-17 23:14:51,524 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-04-17 23:14:51,555 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-04-17 23:14:51,555 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 23:14:51,559 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 3/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2020-04-17 23:14:51,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-04-17 23:14:51,575 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-04-17 23:14:51,575 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 23:14:51,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 3/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2020-04-17 23:14:51,577 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 240 [2020-04-17 23:14:51,579 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:14:52,227 INFO L206 etLargeBlockEncoding]: Checked pairs total: 167 [2020-04-17 23:14:52,227 INFO L214 etLargeBlockEncoding]: Total number of compositions: 30 [2020-04-17 23:14:52,232 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-04-17 23:14:52,242 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-04-17 23:14:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-17 23:14:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 23:14:52,250 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:52,250 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 23:14:52,251 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:52,257 INFO L82 PathProgramCache]: Analyzing trace with hash 4687883, now seen corresponding path program 1 times [2020-04-17 23:14:52,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:52,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502813381] [2020-04-17 23:14:52,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:52,425 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 23:14:52,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502813381] [2020-04-17 23:14:52,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:52,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 23:14:52,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540800436] [2020-04-17 23:14:52,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 23:14:52,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:52,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 23:14:52,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 23:14:52,454 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-04-17 23:14:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:52,467 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-04-17 23:14:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 23:14:52,469 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-04-17 23:14:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:52,484 INFO L225 Difference]: With dead ends: 11 [2020-04-17 23:14:52,484 INFO L226 Difference]: Without dead ends: 11 [2020-04-17 23:14:52,494 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 23:14:52,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-04-17 23:14:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-04-17 23:14:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-04-17 23:14:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-04-17 23:14:52,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-04-17 23:14:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:52,528 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-04-17 23:14:52,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 23:14:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-04-17 23:14:52,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 23:14:52,529 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:52,529 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-04-17 23:14:52,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:52,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash 210024220, now seen corresponding path program 1 times [2020-04-17 23:14:52,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:52,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440859455] [2020-04-17 23:14:52,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:14:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:14:52,591 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 23:14:52,591 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 23:14:52,593 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 23:14:52,593 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-17 23:14:52,600 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,600 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,601 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,601 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,601 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,601 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,601 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,602 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,602 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,602 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,602 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,602 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,603 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,603 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,603 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,603 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,604 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,604 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,604 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,604 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,604 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,605 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,605 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,605 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,605 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,605 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,606 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,606 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,606 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,607 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,607 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,607 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,607 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,607 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,609 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,610 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,610 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,610 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,610 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,610 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:52,614 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 23:14:52,614 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:14:52,614 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:14:52,614 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:14:52,614 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:14:52,615 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:14:52,615 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:14:52,615 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:14:52,615 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:14:52,617 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 104 flow [2020-04-17 23:14:52,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-04-17 23:14:52,638 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-04-17 23:14:52,638 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-17 23:14:52,640 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 5/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2020-04-17 23:14:52,646 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-04-17 23:14:52,674 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-04-17 23:14:52,675 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-17 23:14:52,676 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 5/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2020-04-17 23:14:52,678 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 792 [2020-04-17 23:14:52,678 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:14:53,324 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1029 [2020-04-17 23:14:53,325 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2020-04-17 23:14:53,325 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 38 flow [2020-04-17 23:14:53,335 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 100 states. [2020-04-17 23:14:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-04-17 23:14:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 23:14:53,336 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:53,336 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 23:14:53,337 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 240626158, now seen corresponding path program 1 times [2020-04-17 23:14:53,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:53,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758136069] [2020-04-17 23:14:53,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:53,417 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 23:14:53,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758136069] [2020-04-17 23:14:53,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:53,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:53,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987677466] [2020-04-17 23:14:53,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:53,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:53,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:53,421 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-04-17 23:14:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:53,467 INFO L93 Difference]: Finished difference Result 96 states and 197 transitions. [2020-04-17 23:14:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:53,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 23:14:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:53,473 INFO L225 Difference]: With dead ends: 96 [2020-04-17 23:14:53,473 INFO L226 Difference]: Without dead ends: 96 [2020-04-17 23:14:53,473 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 23:14:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-04-17 23:14:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2020-04-17 23:14:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-04-17 23:14:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 180 transitions. [2020-04-17 23:14:53,498 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 180 transitions. Word has length 5 [2020-04-17 23:14:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:53,499 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 180 transitions. [2020-04-17 23:14:53,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 180 transitions. [2020-04-17 23:14:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 23:14:53,501 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:53,501 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:53,501 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:53,502 INFO L82 PathProgramCache]: Analyzing trace with hash 109807895, now seen corresponding path program 1 times [2020-04-17 23:14:53,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:53,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846246680] [2020-04-17 23:14:53,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:14:53,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846246680] [2020-04-17 23:14:53,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:53,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:53,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005031488] [2020-04-17 23:14:53,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:53,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:53,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:53,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:53,544 INFO L87 Difference]: Start difference. First operand 84 states and 180 transitions. Second operand 3 states. [2020-04-17 23:14:53,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:53,580 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2020-04-17 23:14:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:53,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 23:14:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:53,582 INFO L225 Difference]: With dead ends: 84 [2020-04-17 23:14:53,582 INFO L226 Difference]: Without dead ends: 84 [2020-04-17 23:14:53,583 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 23:14:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-04-17 23:14:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-04-17 23:14:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-04-17 23:14:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 154 transitions. [2020-04-17 23:14:53,597 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 154 transitions. Word has length 8 [2020-04-17 23:14:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:53,597 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 154 transitions. [2020-04-17 23:14:53,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 154 transitions. [2020-04-17 23:14:53,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:14:53,598 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:53,598 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:53,599 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:53,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:53,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1655579211, now seen corresponding path program 1 times [2020-04-17 23:14:53,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:53,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272771462] [2020-04-17 23:14:53,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:14:53,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272771462] [2020-04-17 23:14:53,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:53,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:14:53,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879433083] [2020-04-17 23:14:53,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:14:53,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:53,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:14:53,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:14:53,677 INFO L87 Difference]: Start difference. First operand 76 states and 154 transitions. Second operand 4 states. [2020-04-17 23:14:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:53,708 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-04-17 23:14:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:53,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:14:53,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:53,713 INFO L225 Difference]: With dead ends: 68 [2020-04-17 23:14:53,713 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 23:14:53,713 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:14:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 23:14:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-04-17 23:14:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-04-17 23:14:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 129 transitions. [2020-04-17 23:14:53,733 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 129 transitions. Word has length 9 [2020-04-17 23:14:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:53,733 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 129 transitions. [2020-04-17 23:14:53,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:14:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 129 transitions. [2020-04-17 23:14:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:14:53,735 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:53,735 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-04-17 23:14:53,735 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:53,736 INFO L82 PathProgramCache]: Analyzing trace with hash -891005170, now seen corresponding path program 1 times [2020-04-17 23:14:53,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:53,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812417939] [2020-04-17 23:14:53,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:14:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:14:53,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 23:14:53,791 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 23:14:53,792 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 23:14:53,796 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-17 23:14:53,807 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,808 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,808 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,808 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,808 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,808 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,809 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,809 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,811 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,811 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,811 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,812 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,812 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,813 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,813 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,813 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,813 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,814 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,814 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,814 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,814 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,814 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,815 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,815 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,815 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,815 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,815 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,816 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,816 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,816 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,816 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,816 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,817 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,817 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,817 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,817 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,817 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,818 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,818 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,818 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,819 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,819 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,819 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,820 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,820 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,820 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,820 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,820 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,822 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,822 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,822 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,823 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,823 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,823 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,825 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,826 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,826 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,826 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,826 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,826 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:53,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 23:14:53,829 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:14:53,829 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:14:53,829 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:14:53,829 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:14:53,829 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:14:53,829 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:14:53,829 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:14:53,829 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:14:53,832 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 59 transitions, 139 flow [2020-04-17 23:14:53,832 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-04-17 23:14:53,848 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-04-17 23:14:53,848 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-17 23:14:53,850 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-04-17 23:14:53,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-04-17 23:14:53,865 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-04-17 23:14:53,865 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-17 23:14:53,866 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-04-17 23:14:53,869 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1656 [2020-04-17 23:14:53,869 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:14:54,521 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-04-17 23:14:54,522 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-04-17 23:14:54,522 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 17 transitions, 55 flow [2020-04-17 23:14:54,540 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 404 states. [2020-04-17 23:14:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states. [2020-04-17 23:14:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 23:14:54,541 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:54,541 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 23:14:54,542 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:54,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:54,542 INFO L82 PathProgramCache]: Analyzing trace with hash 359632331, now seen corresponding path program 1 times [2020-04-17 23:14:54,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:54,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246869862] [2020-04-17 23:14:54,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:54,575 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 23:14:54,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246869862] [2020-04-17 23:14:54,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:54,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:54,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345715674] [2020-04-17 23:14:54,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:54,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:54,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:54,577 INFO L87 Difference]: Start difference. First operand 404 states. Second operand 3 states. [2020-04-17 23:14:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:54,615 INFO L93 Difference]: Finished difference Result 447 states and 1247 transitions. [2020-04-17 23:14:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:54,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 23:14:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:54,622 INFO L225 Difference]: With dead ends: 447 [2020-04-17 23:14:54,622 INFO L226 Difference]: Without dead ends: 447 [2020-04-17 23:14:54,623 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 23:14:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-04-17 23:14:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 378. [2020-04-17 23:14:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-04-17 23:14:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1099 transitions. [2020-04-17 23:14:54,706 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1099 transitions. Word has length 5 [2020-04-17 23:14:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:54,706 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 1099 transitions. [2020-04-17 23:14:54,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1099 transitions. [2020-04-17 23:14:54,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 23:14:54,710 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:54,710 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:54,711 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:54,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2061810264, now seen corresponding path program 1 times [2020-04-17 23:14:54,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:54,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098546883] [2020-04-17 23:14:54,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:14:54,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098546883] [2020-04-17 23:14:54,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:54,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:54,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435179229] [2020-04-17 23:14:54,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:54,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:54,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:54,786 INFO L87 Difference]: Start difference. First operand 378 states and 1099 transitions. Second operand 3 states. [2020-04-17 23:14:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:54,826 INFO L93 Difference]: Finished difference Result 486 states and 1356 transitions. [2020-04-17 23:14:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:54,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 23:14:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:54,841 INFO L225 Difference]: With dead ends: 486 [2020-04-17 23:14:54,841 INFO L226 Difference]: Without dead ends: 486 [2020-04-17 23:14:54,841 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 23:14:54,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-04-17 23:14:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 412. [2020-04-17 23:14:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-04-17 23:14:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1196 transitions. [2020-04-17 23:14:54,869 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1196 transitions. Word has length 8 [2020-04-17 23:14:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:54,869 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 1196 transitions. [2020-04-17 23:14:54,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1196 transitions. [2020-04-17 23:14:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:14:54,870 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:54,870 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:54,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:54,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1871610837, now seen corresponding path program 1 times [2020-04-17 23:14:54,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:54,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271951702] [2020-04-17 23:14:54,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:14:54,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271951702] [2020-04-17 23:14:54,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:54,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:14:54,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861188990] [2020-04-17 23:14:54,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:14:54,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:54,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:14:54,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:14:54,905 INFO L87 Difference]: Start difference. First operand 412 states and 1196 transitions. Second operand 4 states. [2020-04-17 23:14:54,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:54,936 INFO L93 Difference]: Finished difference Result 338 states and 962 transitions. [2020-04-17 23:14:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:54,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:14:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:54,940 INFO L225 Difference]: With dead ends: 338 [2020-04-17 23:14:54,940 INFO L226 Difference]: Without dead ends: 338 [2020-04-17 23:14:54,940 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:14:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-04-17 23:14:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 283. [2020-04-17 23:14:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-04-17 23:14:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 793 transitions. [2020-04-17 23:14:54,952 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 793 transitions. Word has length 9 [2020-04-17 23:14:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:54,953 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 793 transitions. [2020-04-17 23:14:54,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:14:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 793 transitions. [2020-04-17 23:14:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:14:54,954 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:54,954 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:54,954 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash -508390409, now seen corresponding path program 1 times [2020-04-17 23:14:54,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:54,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139468787] [2020-04-17 23:14:54,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:14:54,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139468787] [2020-04-17 23:14:54,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:54,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:14:54,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311409514] [2020-04-17 23:14:54,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:14:54,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:54,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:14:54,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:14:54,983 INFO L87 Difference]: Start difference. First operand 283 states and 793 transitions. Second operand 4 states. [2020-04-17 23:14:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:55,009 INFO L93 Difference]: Finished difference Result 233 states and 641 transitions. [2020-04-17 23:14:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:55,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:14:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:55,012 INFO L225 Difference]: With dead ends: 233 [2020-04-17 23:14:55,012 INFO L226 Difference]: Without dead ends: 233 [2020-04-17 23:14:55,012 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:14:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-04-17 23:14:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 183. [2020-04-17 23:14:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-04-17 23:14:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 489 transitions. [2020-04-17 23:14:55,021 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 489 transitions. Word has length 9 [2020-04-17 23:14:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:55,022 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 489 transitions. [2020-04-17 23:14:55,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:14:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 489 transitions. [2020-04-17 23:14:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 23:14:55,023 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:55,023 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:55,023 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:55,024 INFO L82 PathProgramCache]: Analyzing trace with hash 960774069, now seen corresponding path program 1 times [2020-04-17 23:14:55,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:55,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717576742] [2020-04-17 23:14:55,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:14:55,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717576742] [2020-04-17 23:14:55,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:55,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:55,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968764852] [2020-04-17 23:14:55,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:55,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:55,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:55,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:55,048 INFO L87 Difference]: Start difference. First operand 183 states and 489 transitions. Second operand 3 states. [2020-04-17 23:14:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:55,075 INFO L93 Difference]: Finished difference Result 243 states and 634 transitions. [2020-04-17 23:14:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:55,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 23:14:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:55,078 INFO L225 Difference]: With dead ends: 243 [2020-04-17 23:14:55,078 INFO L226 Difference]: Without dead ends: 243 [2020-04-17 23:14:55,079 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 23:14:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-04-17 23:14:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 211. [2020-04-17 23:14:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-04-17 23:14:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 570 transitions. [2020-04-17 23:14:55,087 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 570 transitions. Word has length 11 [2020-04-17 23:14:55,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:55,088 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 570 transitions. [2020-04-17 23:14:55,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 570 transitions. [2020-04-17 23:14:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 23:14:55,089 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:55,089 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:55,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash -280773966, now seen corresponding path program 1 times [2020-04-17 23:14:55,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:55,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623991310] [2020-04-17 23:14:55,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:14:55,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623991310] [2020-04-17 23:14:55,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:55,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:14:55,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493584572] [2020-04-17 23:14:55,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:14:55,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:55,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:14:55,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:14:55,117 INFO L87 Difference]: Start difference. First operand 211 states and 570 transitions. Second operand 4 states. [2020-04-17 23:14:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:55,139 INFO L93 Difference]: Finished difference Result 179 states and 474 transitions. [2020-04-17 23:14:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:55,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 23:14:55,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:55,141 INFO L225 Difference]: With dead ends: 179 [2020-04-17 23:14:55,141 INFO L226 Difference]: Without dead ends: 179 [2020-04-17 23:14:55,142 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:14:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-04-17 23:14:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2020-04-17 23:14:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-04-17 23:14:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 378 transitions. [2020-04-17 23:14:55,148 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 378 transitions. Word has length 12 [2020-04-17 23:14:55,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:55,148 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 378 transitions. [2020-04-17 23:14:55,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:14:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 378 transitions. [2020-04-17 23:14:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 23:14:55,149 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:55,150 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-04-17 23:14:55,150 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:55,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:55,150 INFO L82 PathProgramCache]: Analyzing trace with hash -280874677, now seen corresponding path program 1 times [2020-04-17 23:14:55,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:55,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151824171] [2020-04-17 23:14:55,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:14:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:14:55,171 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 23:14:55,171 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 23:14:55,172 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 23:14:55,172 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-17 23:14:55,179 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,179 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,179 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,179 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,180 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,180 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,180 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,180 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,180 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,180 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,181 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,181 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,181 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,181 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,182 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,182 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,182 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,182 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,182 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,182 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,183 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,183 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,183 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,183 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,183 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,183 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,184 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,184 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,184 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,184 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,184 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,185 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,185 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,185 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,185 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,185 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,185 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,186 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,186 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,186 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,186 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,186 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,187 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,187 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,187 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,187 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,187 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,188 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,188 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,188 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,188 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,188 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,188 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,189 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,189 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,189 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,189 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,190 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,190 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,190 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,190 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,190 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,192 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,193 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,193 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,193 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,193 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,193 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,195 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,196 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,196 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,196 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,196 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,196 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,198 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,199 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,199 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,199 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,199 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,199 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:55,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-17 23:14:55,201 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:14:55,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:14:55,201 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:14:55,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:14:55,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:14:55,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:14:55,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:14:55,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:14:55,204 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 72 transitions, 176 flow [2020-04-17 23:14:55,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-04-17 23:14:55,219 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-04-17 23:14:55,219 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-17 23:14:55,221 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 107 events. 9/107 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 289 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 93. Up to 10 conditions per place. [2020-04-17 23:14:55,224 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-04-17 23:14:55,237 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-04-17 23:14:55,237 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-17 23:14:55,239 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 107 events. 9/107 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 289 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 93. Up to 10 conditions per place. [2020-04-17 23:14:55,242 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-04-17 23:14:55,243 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:14:56,020 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4331 [2020-04-17 23:14:56,021 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-17 23:14:56,021 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 78 flow [2020-04-17 23:14:56,098 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1620 states. [2020-04-17 23:14:56,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states. [2020-04-17 23:14:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 23:14:56,099 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:56,099 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 23:14:56,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:56,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:56,099 INFO L82 PathProgramCache]: Analyzing trace with hash 500888133, now seen corresponding path program 1 times [2020-04-17 23:14:56,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:56,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326032506] [2020-04-17 23:14:56,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:56,117 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 23:14:56,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326032506] [2020-04-17 23:14:56,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:56,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:56,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826227432] [2020-04-17 23:14:56,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:56,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:56,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:56,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:56,119 INFO L87 Difference]: Start difference. First operand 1620 states. Second operand 3 states. [2020-04-17 23:14:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:56,176 INFO L93 Difference]: Finished difference Result 1878 states and 6626 transitions. [2020-04-17 23:14:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:56,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 23:14:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:56,196 INFO L225 Difference]: With dead ends: 1878 [2020-04-17 23:14:56,196 INFO L226 Difference]: Without dead ends: 1878 [2020-04-17 23:14:56,197 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 23:14:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-04-17 23:14:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1572. [2020-04-17 23:14:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-04-17 23:14:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 5747 transitions. [2020-04-17 23:14:56,310 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 5747 transitions. Word has length 5 [2020-04-17 23:14:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:56,310 INFO L479 AbstractCegarLoop]: Abstraction has 1572 states and 5747 transitions. [2020-04-17 23:14:56,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 5747 transitions. [2020-04-17 23:14:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 23:14:56,311 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:56,312 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:56,312 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:56,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1111452433, now seen corresponding path program 1 times [2020-04-17 23:14:56,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:56,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133028215] [2020-04-17 23:14:56,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:14:56,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133028215] [2020-04-17 23:14:56,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:56,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:56,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343693652] [2020-04-17 23:14:56,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:56,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:56,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:56,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:56,330 INFO L87 Difference]: Start difference. First operand 1572 states and 5747 transitions. Second operand 3 states. [2020-04-17 23:14:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:56,386 INFO L93 Difference]: Finished difference Result 2193 states and 7798 transitions. [2020-04-17 23:14:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:56,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 23:14:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:56,408 INFO L225 Difference]: With dead ends: 2193 [2020-04-17 23:14:56,409 INFO L226 Difference]: Without dead ends: 2193 [2020-04-17 23:14:56,409 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 23:14:56,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2020-04-17 23:14:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1828. [2020-04-17 23:14:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-04-17 23:14:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 6732 transitions. [2020-04-17 23:14:56,533 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 6732 transitions. Word has length 8 [2020-04-17 23:14:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:56,534 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 6732 transitions. [2020-04-17 23:14:56,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 6732 transitions. [2020-04-17 23:14:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:14:56,535 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:56,535 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:56,535 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:56,536 INFO L82 PathProgramCache]: Analyzing trace with hash -231363678, now seen corresponding path program 1 times [2020-04-17 23:14:56,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:56,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949844734] [2020-04-17 23:14:56,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:14:56,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949844734] [2020-04-17 23:14:56,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:56,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:14:56,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988950059] [2020-04-17 23:14:56,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:14:56,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:56,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:14:56,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:14:56,576 INFO L87 Difference]: Start difference. First operand 1828 states and 6732 transitions. Second operand 4 states. [2020-04-17 23:14:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:56,662 INFO L93 Difference]: Finished difference Result 1463 states and 5301 transitions. [2020-04-17 23:14:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:56,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:14:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:56,677 INFO L225 Difference]: With dead ends: 1463 [2020-04-17 23:14:56,677 INFO L226 Difference]: Without dead ends: 1463 [2020-04-17 23:14:56,677 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:14:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-04-17 23:14:56,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1177. [2020-04-17 23:14:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-04-17 23:14:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 4196 transitions. [2020-04-17 23:14:56,741 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 4196 transitions. Word has length 9 [2020-04-17 23:14:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:56,741 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 4196 transitions. [2020-04-17 23:14:56,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:14:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 4196 transitions. [2020-04-17 23:14:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:14:56,742 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:56,742 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:56,742 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:56,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:56,743 INFO L82 PathProgramCache]: Analyzing trace with hash 95288963, now seen corresponding path program 1 times [2020-04-17 23:14:56,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:56,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294586847] [2020-04-17 23:14:56,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:14:56,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294586847] [2020-04-17 23:14:56,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:56,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:14:56,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942384269] [2020-04-17 23:14:56,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:14:56,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:56,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:14:56,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:14:56,773 INFO L87 Difference]: Start difference. First operand 1177 states and 4196 transitions. Second operand 4 states. [2020-04-17 23:14:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:56,822 INFO L93 Difference]: Finished difference Result 950 states and 3337 transitions. [2020-04-17 23:14:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:56,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:14:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:56,831 INFO L225 Difference]: With dead ends: 950 [2020-04-17 23:14:56,831 INFO L226 Difference]: Without dead ends: 950 [2020-04-17 23:14:56,831 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:14:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-04-17 23:14:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 723. [2020-04-17 23:14:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-04-17 23:14:56,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2478 transitions. [2020-04-17 23:14:56,865 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 2478 transitions. Word has length 9 [2020-04-17 23:14:56,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:56,866 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 2478 transitions. [2020-04-17 23:14:56,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:14:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 2478 transitions. [2020-04-17 23:14:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 23:14:56,866 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:56,867 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:56,867 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1255400151, now seen corresponding path program 1 times [2020-04-17 23:14:56,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:56,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658251596] [2020-04-17 23:14:56,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:14:56,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658251596] [2020-04-17 23:14:56,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:56,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:56,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150122102] [2020-04-17 23:14:56,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:56,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:56,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:56,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:56,896 INFO L87 Difference]: Start difference. First operand 723 states and 2478 transitions. Second operand 3 states. [2020-04-17 23:14:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:56,936 INFO L93 Difference]: Finished difference Result 1044 states and 3505 transitions. [2020-04-17 23:14:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:56,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 23:14:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:56,945 INFO L225 Difference]: With dead ends: 1044 [2020-04-17 23:14:56,945 INFO L226 Difference]: Without dead ends: 1044 [2020-04-17 23:14:56,948 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 23:14:56,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-04-17 23:14:56,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 880. [2020-04-17 23:14:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-04-17 23:14:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3058 transitions. [2020-04-17 23:14:56,985 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 3058 transitions. Word has length 11 [2020-04-17 23:14:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:56,986 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 3058 transitions. [2020-04-17 23:14:56,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:56,986 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 3058 transitions. [2020-04-17 23:14:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 23:14:56,986 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:56,987 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:56,987 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash 262700715, now seen corresponding path program 1 times [2020-04-17 23:14:56,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:56,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184778607] [2020-04-17 23:14:56,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:14:57,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184778607] [2020-04-17 23:14:57,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:57,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:14:57,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455884758] [2020-04-17 23:14:57,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:14:57,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:57,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:14:57,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:14:57,048 INFO L87 Difference]: Start difference. First operand 880 states and 3058 transitions. Second operand 4 states. [2020-04-17 23:14:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:57,094 INFO L93 Difference]: Finished difference Result 716 states and 2447 transitions. [2020-04-17 23:14:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:57,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 23:14:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:57,104 INFO L225 Difference]: With dead ends: 716 [2020-04-17 23:14:57,105 INFO L226 Difference]: Without dead ends: 716 [2020-04-17 23:14:57,105 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:14:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-04-17 23:14:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 552. [2020-04-17 23:14:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-04-17 23:14:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1836 transitions. [2020-04-17 23:14:57,136 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1836 transitions. Word has length 12 [2020-04-17 23:14:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:57,137 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 1836 transitions. [2020-04-17 23:14:57,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:14:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1836 transitions. [2020-04-17 23:14:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 23:14:57,139 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:57,139 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:57,139 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1066051238, now seen corresponding path program 1 times [2020-04-17 23:14:57,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:57,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676202659] [2020-04-17 23:14:57,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 23:14:57,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676202659] [2020-04-17 23:14:57,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:57,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:57,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834894049] [2020-04-17 23:14:57,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:57,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:57,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:57,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:57,175 INFO L87 Difference]: Start difference. First operand 552 states and 1836 transitions. Second operand 3 states. [2020-04-17 23:14:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:57,219 INFO L93 Difference]: Finished difference Result 756 states and 2485 transitions. [2020-04-17 23:14:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:57,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 23:14:57,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:57,227 INFO L225 Difference]: With dead ends: 756 [2020-04-17 23:14:57,227 INFO L226 Difference]: Without dead ends: 756 [2020-04-17 23:14:57,227 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 23:14:57,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-04-17 23:14:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 652. [2020-04-17 23:14:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-04-17 23:14:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2203 transitions. [2020-04-17 23:14:57,253 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2203 transitions. Word has length 14 [2020-04-17 23:14:57,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:57,254 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 2203 transitions. [2020-04-17 23:14:57,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2203 transitions. [2020-04-17 23:14:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 23:14:57,256 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:57,256 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:57,256 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 23:14:57,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:57,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1312017708, now seen corresponding path program 1 times [2020-04-17 23:14:57,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:57,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920950206] [2020-04-17 23:14:57,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:14:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:14:57,299 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 23:14:57,300 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 23:14:57,300 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 23:14:57,302 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-17 23:14:57,313 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,313 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,313 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,313 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,313 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,314 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,314 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,315 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,315 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,315 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,315 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,315 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,315 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,316 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,316 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,316 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,316 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,316 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,316 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,317 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,317 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,317 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,317 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,318 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,318 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,318 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,319 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,319 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,319 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,319 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,319 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,319 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,319 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,320 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,320 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,320 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,320 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,320 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,321 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,321 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,321 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,321 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,321 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,321 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,321 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,322 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,322 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,322 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,322 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,322 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,323 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,323 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,323 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,324 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,324 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,324 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,324 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,324 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,324 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,324 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,325 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,325 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,325 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,325 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,325 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,326 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,326 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,326 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,326 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,326 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,326 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,328 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,329 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,329 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,329 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,329 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,329 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,331 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,332 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,332 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,332 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,332 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,332 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,334 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,335 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,335 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,335 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,335 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,335 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,337 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,338 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,338 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,338 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,338 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,338 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:14:57,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-17 23:14:57,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:14:57,341 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:14:57,341 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:14:57,341 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:14:57,341 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:14:57,341 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:14:57,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:14:57,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:14:57,343 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 215 flow [2020-04-17 23:14:57,343 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-04-17 23:14:57,359 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-04-17 23:14:57,360 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-17 23:14:57,361 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 129 events. 11/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2020-04-17 23:14:57,366 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-04-17 23:14:57,380 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-04-17 23:14:57,380 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-17 23:14:57,381 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 129 events. 11/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2020-04-17 23:14:57,387 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4320 [2020-04-17 23:14:57,387 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:14:58,273 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6550 [2020-04-17 23:14:58,273 INFO L214 etLargeBlockEncoding]: Total number of compositions: 76 [2020-04-17 23:14:58,274 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 28 transitions, 101 flow [2020-04-17 23:14:58,678 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6484 states. [2020-04-17 23:14:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states. [2020-04-17 23:14:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 23:14:58,679 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:58,679 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 23:14:58,679 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:58,680 INFO L82 PathProgramCache]: Analyzing trace with hash 666270871, now seen corresponding path program 1 times [2020-04-17 23:14:58,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:58,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615862971] [2020-04-17 23:14:58,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:58,703 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 23:14:58,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615862971] [2020-04-17 23:14:58,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:58,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:58,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279410493] [2020-04-17 23:14:58,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:58,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:58,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:58,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:58,705 INFO L87 Difference]: Start difference. First operand 6484 states. Second operand 3 states. [2020-04-17 23:14:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:59,002 INFO L93 Difference]: Finished difference Result 7629 states and 32588 transitions. [2020-04-17 23:14:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:59,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 23:14:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:59,100 INFO L225 Difference]: With dead ends: 7629 [2020-04-17 23:14:59,101 INFO L226 Difference]: Without dead ends: 7629 [2020-04-17 23:14:59,101 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 23:14:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2020-04-17 23:14:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 6366. [2020-04-17 23:14:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6366 states. [2020-04-17 23:14:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 28029 transitions. [2020-04-17 23:14:59,690 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 28029 transitions. Word has length 5 [2020-04-17 23:14:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:14:59,690 INFO L479 AbstractCegarLoop]: Abstraction has 6366 states and 28029 transitions. [2020-04-17 23:14:59,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:14:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 28029 transitions. [2020-04-17 23:14:59,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 23:14:59,692 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:14:59,692 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:14:59,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:14:59,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:14:59,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1690072825, now seen corresponding path program 1 times [2020-04-17 23:14:59,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:14:59,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219271054] [2020-04-17 23:14:59,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:14:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:14:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:14:59,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219271054] [2020-04-17 23:14:59,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:14:59,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:14:59,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772032244] [2020-04-17 23:14:59,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:14:59,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:14:59,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:14:59,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:14:59,713 INFO L87 Difference]: Start difference. First operand 6366 states and 28029 transitions. Second operand 3 states. [2020-04-17 23:14:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:14:59,905 INFO L93 Difference]: Finished difference Result 9120 states and 39254 transitions. [2020-04-17 23:14:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:14:59,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 23:14:59,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:14:59,975 INFO L225 Difference]: With dead ends: 9120 [2020-04-17 23:14:59,975 INFO L226 Difference]: Without dead ends: 9120 [2020-04-17 23:14:59,976 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 23:15:00,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2020-04-17 23:15:00,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 7564. [2020-04-17 23:15:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7564 states. [2020-04-17 23:15:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7564 states to 7564 states and 33556 transitions. [2020-04-17 23:15:01,231 INFO L78 Accepts]: Start accepts. Automaton has 7564 states and 33556 transitions. Word has length 8 [2020-04-17 23:15:01,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:01,231 INFO L479 AbstractCegarLoop]: Abstraction has 7564 states and 33556 transitions. [2020-04-17 23:15:01,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand 7564 states and 33556 transitions. [2020-04-17 23:15:01,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:15:01,232 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:01,232 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:01,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:01,233 INFO L82 PathProgramCache]: Analyzing trace with hash 868276956, now seen corresponding path program 1 times [2020-04-17 23:15:01,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:01,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835279435] [2020-04-17 23:15:01,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:15:01,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835279435] [2020-04-17 23:15:01,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:01,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:01,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031325713] [2020-04-17 23:15:01,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:01,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:01,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:01,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:01,260 INFO L87 Difference]: Start difference. First operand 7564 states and 33556 transitions. Second operand 4 states. [2020-04-17 23:15:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:01,406 INFO L93 Difference]: Finished difference Result 6008 states and 26302 transitions. [2020-04-17 23:15:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:01,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:15:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:01,443 INFO L225 Difference]: With dead ends: 6008 [2020-04-17 23:15:01,443 INFO L226 Difference]: Without dead ends: 6008 [2020-04-17 23:15:01,443 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:01,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6008 states. [2020-04-17 23:15:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6008 to 4771. [2020-04-17 23:15:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4771 states. [2020-04-17 23:15:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 20598 transitions. [2020-04-17 23:15:01,790 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 20598 transitions. Word has length 9 [2020-04-17 23:15:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:01,790 INFO L479 AbstractCegarLoop]: Abstraction has 4771 states and 20598 transitions. [2020-04-17 23:15:01,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 20598 transitions. [2020-04-17 23:15:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:15:01,791 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:01,791 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:01,791 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:01,792 INFO L82 PathProgramCache]: Analyzing trace with hash 852652394, now seen corresponding path program 1 times [2020-04-17 23:15:01,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:01,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855766788] [2020-04-17 23:15:01,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:15:01,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855766788] [2020-04-17 23:15:01,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:01,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:01,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929635450] [2020-04-17 23:15:01,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:01,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:01,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:01,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:01,814 INFO L87 Difference]: Start difference. First operand 4771 states and 20598 transitions. Second operand 4 states. [2020-04-17 23:15:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:01,884 INFO L93 Difference]: Finished difference Result 3827 states and 16326 transitions. [2020-04-17 23:15:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:01,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:15:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:01,906 INFO L225 Difference]: With dead ends: 3827 [2020-04-17 23:15:01,906 INFO L226 Difference]: Without dead ends: 3827 [2020-04-17 23:15:01,906 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2020-04-17 23:15:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2883. [2020-04-17 23:15:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2883 states. [2020-04-17 23:15:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 12054 transitions. [2020-04-17 23:15:02,185 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 12054 transitions. Word has length 9 [2020-04-17 23:15:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:02,186 INFO L479 AbstractCegarLoop]: Abstraction has 2883 states and 12054 transitions. [2020-04-17 23:15:02,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 12054 transitions. [2020-04-17 23:15:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 23:15:02,186 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:02,187 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:02,187 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:02,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:02,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1095418705, now seen corresponding path program 1 times [2020-04-17 23:15:02,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:02,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831143886] [2020-04-17 23:15:02,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:15:02,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831143886] [2020-04-17 23:15:02,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:02,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:02,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39972202] [2020-04-17 23:15:02,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:02,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:02,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:02,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:02,215 INFO L87 Difference]: Start difference. First operand 2883 states and 12054 transitions. Second operand 3 states. [2020-04-17 23:15:02,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:02,270 INFO L93 Difference]: Finished difference Result 4275 states and 17545 transitions. [2020-04-17 23:15:02,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:02,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 23:15:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:02,294 INFO L225 Difference]: With dead ends: 4275 [2020-04-17 23:15:02,294 INFO L226 Difference]: Without dead ends: 4275 [2020-04-17 23:15:02,294 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 23:15:02,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2020-04-17 23:15:02,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 3574. [2020-04-17 23:15:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-04-17 23:15:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 15125 transitions. [2020-04-17 23:15:02,461 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 15125 transitions. Word has length 11 [2020-04-17 23:15:02,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:02,462 INFO L479 AbstractCegarLoop]: Abstraction has 3574 states and 15125 transitions. [2020-04-17 23:15:02,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 15125 transitions. [2020-04-17 23:15:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 23:15:02,462 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:02,463 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:02,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:02,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:02,463 INFO L82 PathProgramCache]: Analyzing trace with hash 401760447, now seen corresponding path program 1 times [2020-04-17 23:15:02,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:02,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257635379] [2020-04-17 23:15:02,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:15:02,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257635379] [2020-04-17 23:15:02,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:02,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:02,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242602321] [2020-04-17 23:15:02,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:02,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:02,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:02,485 INFO L87 Difference]: Start difference. First operand 3574 states and 15125 transitions. Second operand 4 states. [2020-04-17 23:15:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:02,532 INFO L93 Difference]: Finished difference Result 2873 states and 12004 transitions. [2020-04-17 23:15:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:02,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 23:15:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:02,547 INFO L225 Difference]: With dead ends: 2873 [2020-04-17 23:15:02,547 INFO L226 Difference]: Without dead ends: 2873 [2020-04-17 23:15:02,547 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-04-17 23:15:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2172. [2020-04-17 23:15:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2172 states. [2020-04-17 23:15:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8883 transitions. [2020-04-17 23:15:02,643 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8883 transitions. Word has length 12 [2020-04-17 23:15:02,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:02,643 INFO L479 AbstractCegarLoop]: Abstraction has 2172 states and 8883 transitions. [2020-04-17 23:15:02,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8883 transitions. [2020-04-17 23:15:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 23:15:02,644 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:02,645 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:02,645 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:02,645 INFO L82 PathProgramCache]: Analyzing trace with hash -596519610, now seen corresponding path program 1 times [2020-04-17 23:15:02,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:02,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345016046] [2020-04-17 23:15:02,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 23:15:02,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345016046] [2020-04-17 23:15:02,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:02,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:02,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883249407] [2020-04-17 23:15:02,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:02,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:02,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:02,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:02,663 INFO L87 Difference]: Start difference. First operand 2172 states and 8883 transitions. Second operand 3 states. [2020-04-17 23:15:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:02,708 INFO L93 Difference]: Finished difference Result 3177 states and 12799 transitions. [2020-04-17 23:15:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:02,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 23:15:02,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:02,724 INFO L225 Difference]: With dead ends: 3177 [2020-04-17 23:15:02,724 INFO L226 Difference]: Without dead ends: 3177 [2020-04-17 23:15:02,725 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 23:15:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2020-04-17 23:15:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 2671. [2020-04-17 23:15:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2671 states. [2020-04-17 23:15:02,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 11075 transitions. [2020-04-17 23:15:02,835 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 11075 transitions. Word has length 14 [2020-04-17 23:15:02,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:02,836 INFO L479 AbstractCegarLoop]: Abstraction has 2671 states and 11075 transitions. [2020-04-17 23:15:02,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:02,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 11075 transitions. [2020-04-17 23:15:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 23:15:02,837 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:02,837 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:02,837 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:02,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1312236012, now seen corresponding path program 1 times [2020-04-17 23:15:02,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:02,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239679256] [2020-04-17 23:15:02,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 23:15:02,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239679256] [2020-04-17 23:15:02,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:02,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:02,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141366499] [2020-04-17 23:15:02,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:02,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:02,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:02,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:02,862 INFO L87 Difference]: Start difference. First operand 2671 states and 11075 transitions. Second operand 4 states. [2020-04-17 23:15:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:02,904 INFO L93 Difference]: Finished difference Result 2165 states and 8845 transitions. [2020-04-17 23:15:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:02,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 23:15:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:02,913 INFO L225 Difference]: With dead ends: 2165 [2020-04-17 23:15:02,914 INFO L226 Difference]: Without dead ends: 2165 [2020-04-17 23:15:02,914 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-04-17 23:15:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1659. [2020-04-17 23:15:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-04-17 23:15:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 6615 transitions. [2020-04-17 23:15:02,986 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 6615 transitions. Word has length 15 [2020-04-17 23:15:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:02,986 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 6615 transitions. [2020-04-17 23:15:02,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 6615 transitions. [2020-04-17 23:15:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:15:02,988 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:02,988 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:02,988 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:02,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1514810044, now seen corresponding path program 1 times [2020-04-17 23:15:02,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:02,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272971661] [2020-04-17 23:15:02,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 23:15:03,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272971661] [2020-04-17 23:15:03,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:03,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:03,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541175671] [2020-04-17 23:15:03,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:03,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:03,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:03,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:03,010 INFO L87 Difference]: Start difference. First operand 1659 states and 6615 transitions. Second operand 3 states. [2020-04-17 23:15:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:03,060 INFO L93 Difference]: Finished difference Result 2295 states and 9088 transitions. [2020-04-17 23:15:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:03,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 23:15:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:03,077 INFO L225 Difference]: With dead ends: 2295 [2020-04-17 23:15:03,077 INFO L226 Difference]: Without dead ends: 2295 [2020-04-17 23:15:03,077 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 23:15:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-04-17 23:15:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1975. [2020-04-17 23:15:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-04-17 23:15:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 8000 transitions. [2020-04-17 23:15:03,275 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 8000 transitions. Word has length 17 [2020-04-17 23:15:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:03,276 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 8000 transitions. [2020-04-17 23:15:03,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:03,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 8000 transitions. [2020-04-17 23:15:03,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 23:15:03,278 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:03,278 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:03,278 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:03,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:03,279 INFO L82 PathProgramCache]: Analyzing trace with hash -285527274, now seen corresponding path program 1 times [2020-04-17 23:15:03,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:03,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433425724] [2020-04-17 23:15:03,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 23:15:03,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433425724] [2020-04-17 23:15:03,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:03,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:03,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868761517] [2020-04-17 23:15:03,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:03,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:03,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:03,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:03,304 INFO L87 Difference]: Start difference. First operand 1975 states and 8000 transitions. Second operand 4 states. [2020-04-17 23:15:03,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:03,348 INFO L93 Difference]: Finished difference Result 1655 states and 6592 transitions. [2020-04-17 23:15:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:03,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 23:15:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:03,356 INFO L225 Difference]: With dead ends: 1655 [2020-04-17 23:15:03,356 INFO L226 Difference]: Without dead ends: 1655 [2020-04-17 23:15:03,357 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-04-17 23:15:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1335. [2020-04-17 23:15:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-04-17 23:15:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 5184 transitions. [2020-04-17 23:15:03,407 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 5184 transitions. Word has length 18 [2020-04-17 23:15:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:03,408 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 5184 transitions. [2020-04-17 23:15:03,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 5184 transitions. [2020-04-17 23:15:03,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 23:15:03,410 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:03,410 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:03,410 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:03,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:03,411 INFO L82 PathProgramCache]: Analyzing trace with hash -285687237, now seen corresponding path program 1 times [2020-04-17 23:15:03,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:03,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754501786] [2020-04-17 23:15:03,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:15:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:15:03,438 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 23:15:03,438 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 23:15:03,440 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 23:15:03,441 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-17 23:15:03,452 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,452 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,452 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,452 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,452 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,452 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,454 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,454 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,454 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,459 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,459 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,459 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,459 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,459 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,459 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,461 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,461 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,462 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,463 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,463 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,467 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,467 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,467 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,467 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,467 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,468 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,470 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,471 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,471 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,471 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,471 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,471 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,472 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,472 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,472 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,473 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,473 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,473 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,474 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,474 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,474 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,474 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,475 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,475 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,478 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,478 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,478 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,478 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,478 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:03,480 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-17 23:15:03,480 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:15:03,480 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:15:03,480 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:15:03,480 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:15:03,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:15:03,481 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:15:03,481 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:15:03,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:15:03,482 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 98 transitions, 256 flow [2020-04-17 23:15:03,482 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-04-17 23:15:03,499 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-04-17 23:15:03,499 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-17 23:15:03,500 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 151 events. 13/151 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 434 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2020-04-17 23:15:03,507 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-04-17 23:15:03,523 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-04-17 23:15:03,524 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-17 23:15:03,525 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 151 events. 13/151 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 434 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2020-04-17 23:15:03,532 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6120 [2020-04-17 23:15:03,532 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:15:04,481 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10455 [2020-04-17 23:15:04,481 INFO L214 etLargeBlockEncoding]: Total number of compositions: 89 [2020-04-17 23:15:04,481 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 126 flow [2020-04-17 23:15:08,467 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 25940 states. [2020-04-17 23:15:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 25940 states. [2020-04-17 23:15:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 23:15:08,467 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:08,468 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 23:15:08,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash 862156483, now seen corresponding path program 1 times [2020-04-17 23:15:08,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:08,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348668990] [2020-04-17 23:15:08,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:08,483 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 23:15:08,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348668990] [2020-04-17 23:15:08,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:08,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:08,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783062313] [2020-04-17 23:15:08,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:08,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:08,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:08,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:08,485 INFO L87 Difference]: Start difference. First operand 25940 states. Second operand 3 states. [2020-04-17 23:15:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:08,765 INFO L93 Difference]: Finished difference Result 30660 states and 153869 transitions. [2020-04-17 23:15:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:08,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 23:15:08,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:08,910 INFO L225 Difference]: With dead ends: 30660 [2020-04-17 23:15:08,911 INFO L226 Difference]: Without dead ends: 30660 [2020-04-17 23:15:08,911 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 23:15:11,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30660 states. [2020-04-17 23:15:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30660 to 25560. [2020-04-17 23:15:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25560 states. [2020-04-17 23:15:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25560 states to 25560 states and 131665 transitions. [2020-04-17 23:15:12,401 INFO L78 Accepts]: Start accepts. Automaton has 25560 states and 131665 transitions. Word has length 5 [2020-04-17 23:15:12,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:12,402 INFO L479 AbstractCegarLoop]: Abstraction has 25560 states and 131665 transitions. [2020-04-17 23:15:12,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 25560 states and 131665 transitions. [2020-04-17 23:15:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 23:15:12,402 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:12,402 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:12,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:12,403 INFO L82 PathProgramCache]: Analyzing trace with hash 422134040, now seen corresponding path program 1 times [2020-04-17 23:15:12,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:12,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349450991] [2020-04-17 23:15:12,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:15:12,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349450991] [2020-04-17 23:15:12,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:12,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:12,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474302985] [2020-04-17 23:15:12,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:12,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:12,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:12,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:12,426 INFO L87 Difference]: Start difference. First operand 25560 states and 131665 transitions. Second operand 3 states. [2020-04-17 23:15:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:12,691 INFO L93 Difference]: Finished difference Result 36927 states and 186525 transitions. [2020-04-17 23:15:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:12,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 23:15:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:12,860 INFO L225 Difference]: With dead ends: 36927 [2020-04-17 23:15:12,861 INFO L226 Difference]: Without dead ends: 36927 [2020-04-17 23:15:12,861 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 23:15:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36927 states. [2020-04-17 23:15:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36927 to 30580. [2020-04-17 23:15:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30580 states. [2020-04-17 23:15:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30580 states to 30580 states and 158564 transitions. [2020-04-17 23:15:16,814 INFO L78 Accepts]: Start accepts. Automaton has 30580 states and 158564 transitions. Word has length 8 [2020-04-17 23:15:16,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:16,814 INFO L479 AbstractCegarLoop]: Abstraction has 30580 states and 158564 transitions. [2020-04-17 23:15:16,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 30580 states and 158564 transitions. [2020-04-17 23:15:16,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:15:16,815 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:16,815 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:16,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:16,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:16,815 INFO L82 PathProgramCache]: Analyzing trace with hash 203971322, now seen corresponding path program 1 times [2020-04-17 23:15:16,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:16,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439147528] [2020-04-17 23:15:16,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:15:16,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439147528] [2020-04-17 23:15:16,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:16,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:16,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155365244] [2020-04-17 23:15:16,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:16,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:16,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:16,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:16,852 INFO L87 Difference]: Start difference. First operand 30580 states and 158564 transitions. Second operand 4 states. [2020-04-17 23:15:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:17,090 INFO L93 Difference]: Finished difference Result 24233 states and 124256 transitions. [2020-04-17 23:15:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:17,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:15:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:17,203 INFO L225 Difference]: With dead ends: 24233 [2020-04-17 23:15:17,203 INFO L226 Difference]: Without dead ends: 24233 [2020-04-17 23:15:17,204 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24233 states. [2020-04-17 23:15:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24233 to 19165. [2020-04-17 23:15:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19165 states. [2020-04-17 23:15:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19165 states to 19165 states and 97114 transitions. [2020-04-17 23:15:18,850 INFO L78 Accepts]: Start accepts. Automaton has 19165 states and 97114 transitions. Word has length 9 [2020-04-17 23:15:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:18,850 INFO L479 AbstractCegarLoop]: Abstraction has 19165 states and 97114 transitions. [2020-04-17 23:15:18,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 19165 states and 97114 transitions. [2020-04-17 23:15:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:15:18,850 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:18,850 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:18,850 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash 201256629, now seen corresponding path program 1 times [2020-04-17 23:15:18,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:18,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594006767] [2020-04-17 23:15:18,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:15:18,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594006767] [2020-04-17 23:15:18,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:18,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:18,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375990557] [2020-04-17 23:15:18,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:18,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:18,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:18,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:18,872 INFO L87 Difference]: Start difference. First operand 19165 states and 97114 transitions. Second operand 4 states. [2020-04-17 23:15:19,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:19,033 INFO L93 Difference]: Finished difference Result 15344 states and 76976 transitions. [2020-04-17 23:15:19,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:19,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:15:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:19,110 INFO L225 Difference]: With dead ends: 15344 [2020-04-17 23:15:19,110 INFO L226 Difference]: Without dead ends: 15344 [2020-04-17 23:15:19,111 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15344 states. [2020-04-17 23:15:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15344 to 11523. [2020-04-17 23:15:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11523 states. [2020-04-17 23:15:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 56838 transitions. [2020-04-17 23:15:21,164 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 56838 transitions. Word has length 9 [2020-04-17 23:15:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:21,164 INFO L479 AbstractCegarLoop]: Abstraction has 11523 states and 56838 transitions. [2020-04-17 23:15:21,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 56838 transitions. [2020-04-17 23:15:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 23:15:21,165 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:21,165 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:21,165 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:21,165 INFO L82 PathProgramCache]: Analyzing trace with hash -40974610, now seen corresponding path program 1 times [2020-04-17 23:15:21,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:21,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339055742] [2020-04-17 23:15:21,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:15:21,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339055742] [2020-04-17 23:15:21,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:21,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:21,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600447969] [2020-04-17 23:15:21,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:21,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:21,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:21,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:21,186 INFO L87 Difference]: Start difference. First operand 11523 states and 56838 transitions. Second operand 3 states. [2020-04-17 23:15:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:21,356 INFO L93 Difference]: Finished difference Result 17226 states and 83578 transitions. [2020-04-17 23:15:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:21,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 23:15:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:21,423 INFO L225 Difference]: With dead ends: 17226 [2020-04-17 23:15:21,423 INFO L226 Difference]: Without dead ends: 17226 [2020-04-17 23:15:21,423 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 23:15:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17226 states. [2020-04-17 23:15:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17226 to 14368. [2020-04-17 23:15:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14368 states. [2020-04-17 23:15:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14368 states to 14368 states and 71601 transitions. [2020-04-17 23:15:22,089 INFO L78 Accepts]: Start accepts. Automaton has 14368 states and 71601 transitions. Word has length 11 [2020-04-17 23:15:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:22,090 INFO L479 AbstractCegarLoop]: Abstraction has 14368 states and 71601 transitions. [2020-04-17 23:15:22,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 14368 states and 71601 transitions. [2020-04-17 23:15:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 23:15:22,093 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:22,093 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:22,093 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1270210238, now seen corresponding path program 1 times [2020-04-17 23:15:22,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:22,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779748438] [2020-04-17 23:15:22,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:15:22,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779748438] [2020-04-17 23:15:22,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:22,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:22,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073484232] [2020-04-17 23:15:22,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:22,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:22,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:22,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:22,114 INFO L87 Difference]: Start difference. First operand 14368 states and 71601 transitions. Second operand 4 states. [2020-04-17 23:15:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:22,229 INFO L93 Difference]: Finished difference Result 11510 states and 56766 transitions. [2020-04-17 23:15:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:22,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 23:15:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:22,267 INFO L225 Difference]: With dead ends: 11510 [2020-04-17 23:15:22,267 INFO L226 Difference]: Without dead ends: 11510 [2020-04-17 23:15:22,268 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-04-17 23:15:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 8652. [2020-04-17 23:15:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2020-04-17 23:15:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 41931 transitions. [2020-04-17 23:15:22,944 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 41931 transitions. Word has length 12 [2020-04-17 23:15:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:22,944 INFO L479 AbstractCegarLoop]: Abstraction has 8652 states and 41931 transitions. [2020-04-17 23:15:22,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 41931 transitions. [2020-04-17 23:15:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 23:15:22,945 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:22,945 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:22,945 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:22,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1064251902, now seen corresponding path program 1 times [2020-04-17 23:15:22,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:22,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060434025] [2020-04-17 23:15:22,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 23:15:22,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060434025] [2020-04-17 23:15:22,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:22,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:22,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640284792] [2020-04-17 23:15:22,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:22,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:22,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:22,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:22,963 INFO L87 Difference]: Start difference. First operand 8652 states and 41931 transitions. Second operand 3 states. [2020-04-17 23:15:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:23,110 INFO L93 Difference]: Finished difference Result 12888 states and 61498 transitions. [2020-04-17 23:15:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:23,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 23:15:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:23,169 INFO L225 Difference]: With dead ends: 12888 [2020-04-17 23:15:23,169 INFO L226 Difference]: Without dead ends: 12888 [2020-04-17 23:15:23,170 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 23:15:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12888 states. [2020-04-17 23:15:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12888 to 10765. [2020-04-17 23:15:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10765 states. [2020-04-17 23:15:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 52746 transitions. [2020-04-17 23:15:23,575 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 52746 transitions. Word has length 14 [2020-04-17 23:15:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:23,575 INFO L479 AbstractCegarLoop]: Abstraction has 10765 states and 52746 transitions. [2020-04-17 23:15:23,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 52746 transitions. [2020-04-17 23:15:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 23:15:23,577 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:23,577 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:23,577 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:23,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:23,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1367932408, now seen corresponding path program 1 times [2020-04-17 23:15:23,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:23,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191191919] [2020-04-17 23:15:23,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 23:15:23,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191191919] [2020-04-17 23:15:23,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:23,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:23,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774993672] [2020-04-17 23:15:23,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:23,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:23,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:23,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:23,604 INFO L87 Difference]: Start difference. First operand 10765 states and 52746 transitions. Second operand 4 states. [2020-04-17 23:15:23,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:23,715 INFO L93 Difference]: Finished difference Result 8642 states and 41871 transitions. [2020-04-17 23:15:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:23,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 23:15:23,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:23,741 INFO L225 Difference]: With dead ends: 8642 [2020-04-17 23:15:23,741 INFO L226 Difference]: Without dead ends: 8642 [2020-04-17 23:15:23,742 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8642 states. [2020-04-17 23:15:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8642 to 6519. [2020-04-17 23:15:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6519 states. [2020-04-17 23:15:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6519 states to 6519 states and 30996 transitions. [2020-04-17 23:15:23,980 INFO L78 Accepts]: Start accepts. Automaton has 6519 states and 30996 transitions. Word has length 15 [2020-04-17 23:15:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:23,980 INFO L479 AbstractCegarLoop]: Abstraction has 6519 states and 30996 transitions. [2020-04-17 23:15:23,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6519 states and 30996 transitions. [2020-04-17 23:15:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:15:23,982 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:23,982 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:23,982 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash 152749525, now seen corresponding path program 1 times [2020-04-17 23:15:23,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:23,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375410343] [2020-04-17 23:15:23,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 23:15:24,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375410343] [2020-04-17 23:15:24,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:24,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:24,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644899628] [2020-04-17 23:15:24,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:24,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:24,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:24,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:24,009 INFO L87 Difference]: Start difference. First operand 6519 states and 30996 transitions. Second operand 3 states. [2020-04-17 23:15:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:24,113 INFO L93 Difference]: Finished difference Result 9576 states and 44989 transitions. [2020-04-17 23:15:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:24,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 23:15:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:24,146 INFO L225 Difference]: With dead ends: 9576 [2020-04-17 23:15:24,146 INFO L226 Difference]: Without dead ends: 9576 [2020-04-17 23:15:24,146 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 23:15:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2020-04-17 23:15:24,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 8044. [2020-04-17 23:15:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8044 states. [2020-04-17 23:15:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 38736 transitions. [2020-04-17 23:15:24,436 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 38736 transitions. Word has length 17 [2020-04-17 23:15:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:24,436 INFO L479 AbstractCegarLoop]: Abstraction has 8044 states and 38736 transitions. [2020-04-17 23:15:24,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:24,437 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 38736 transitions. [2020-04-17 23:15:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 23:15:24,438 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:24,438 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:24,439 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:24,439 INFO L82 PathProgramCache]: Analyzing trace with hash 440270196, now seen corresponding path program 1 times [2020-04-17 23:15:24,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:24,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687623010] [2020-04-17 23:15:24,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 23:15:24,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687623010] [2020-04-17 23:15:24,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:24,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:24,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699376485] [2020-04-17 23:15:24,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:24,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:24,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:24,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:24,461 INFO L87 Difference]: Start difference. First operand 8044 states and 38736 transitions. Second operand 4 states. [2020-04-17 23:15:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:24,557 INFO L93 Difference]: Finished difference Result 6512 states and 30951 transitions. [2020-04-17 23:15:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:24,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 23:15:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:24,584 INFO L225 Difference]: With dead ends: 6512 [2020-04-17 23:15:24,584 INFO L226 Difference]: Without dead ends: 6512 [2020-04-17 23:15:24,584 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2020-04-17 23:15:24,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 4980. [2020-04-17 23:15:24,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4980 states. [2020-04-17 23:15:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 23166 transitions. [2020-04-17 23:15:24,769 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 23166 transitions. Word has length 18 [2020-04-17 23:15:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:24,769 INFO L479 AbstractCegarLoop]: Abstraction has 4980 states and 23166 transitions. [2020-04-17 23:15:24,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 23166 transitions. [2020-04-17 23:15:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 23:15:24,771 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:24,771 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:24,771 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:24,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:24,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2026385382, now seen corresponding path program 1 times [2020-04-17 23:15:24,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:24,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933460780] [2020-04-17 23:15:24,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-04-17 23:15:24,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933460780] [2020-04-17 23:15:24,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:24,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:15:24,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602541242] [2020-04-17 23:15:24,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:15:24,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:24,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:15:24,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:15:24,789 INFO L87 Difference]: Start difference. First operand 4980 states and 23166 transitions. Second operand 3 states. [2020-04-17 23:15:24,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:24,861 INFO L93 Difference]: Finished difference Result 6912 states and 31999 transitions. [2020-04-17 23:15:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:24,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-04-17 23:15:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:25,040 INFO L225 Difference]: With dead ends: 6912 [2020-04-17 23:15:25,040 INFO L226 Difference]: Without dead ends: 6912 [2020-04-17 23:15:25,040 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 23:15:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2020-04-17 23:15:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 5944. [2020-04-17 23:15:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2020-04-17 23:15:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 28053 transitions. [2020-04-17 23:15:25,216 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 28053 transitions. Word has length 20 [2020-04-17 23:15:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:25,217 INFO L479 AbstractCegarLoop]: Abstraction has 5944 states and 28053 transitions. [2020-04-17 23:15:25,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:15:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 28053 transitions. [2020-04-17 23:15:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 23:15:25,219 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:25,219 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:25,219 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:25,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:25,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1606559931, now seen corresponding path program 1 times [2020-04-17 23:15:25,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:25,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816792629] [2020-04-17 23:15:25,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:15:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-04-17 23:15:25,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816792629] [2020-04-17 23:15:25,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:15:25,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:15:25,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821331966] [2020-04-17 23:15:25,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:15:25,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:15:25,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:15:25,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:15:25,249 INFO L87 Difference]: Start difference. First operand 5944 states and 28053 transitions. Second operand 4 states. [2020-04-17 23:15:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:15:25,330 INFO L93 Difference]: Finished difference Result 4976 states and 23139 transitions. [2020-04-17 23:15:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:15:25,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-04-17 23:15:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:15:25,350 INFO L225 Difference]: With dead ends: 4976 [2020-04-17 23:15:25,350 INFO L226 Difference]: Without dead ends: 4976 [2020-04-17 23:15:25,351 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:15:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2020-04-17 23:15:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4008. [2020-04-17 23:15:25,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2020-04-17 23:15:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 18225 transitions. [2020-04-17 23:15:25,560 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 18225 transitions. Word has length 21 [2020-04-17 23:15:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:15:25,561 INFO L479 AbstractCegarLoop]: Abstraction has 4008 states and 18225 transitions. [2020-04-17 23:15:25,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:15:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 18225 transitions. [2020-04-17 23:15:25,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 23:15:25,564 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:15:25,564 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:15:25,565 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:15:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:15:25,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1606739912, now seen corresponding path program 1 times [2020-04-17 23:15:25,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:15:25,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953927116] [2020-04-17 23:15:25,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:15:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:15:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:15:25,603 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 23:15:25,603 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 23:15:25,604 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 23:15:25,604 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-04-17 23:15:25,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,618 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,618 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,619 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,624 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,624 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,624 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,624 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,626 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,626 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,626 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,628 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,628 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,628 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,629 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,629 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,629 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,630 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,630 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,630 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,630 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,630 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,630 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,630 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,631 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,631 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,632 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,632 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,633 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,633 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,634 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,634 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,636 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,636 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,636 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,636 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,636 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,636 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,636 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,637 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,637 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,638 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,638 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,639 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,639 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,640 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,640 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,640 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,640 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,641 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,642 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,642 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,642 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,642 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,642 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,643 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,644 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,644 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,644 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,644 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,644 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,645 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,646 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,646 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,646 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,646 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,646 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,648 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,648 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,649 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,649 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,649 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,649 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,651 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,652 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,652 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,652 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,652 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,652 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:15:25,654 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-04-17 23:15:25,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:15:25,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:15:25,654 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:15:25,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:15:25,655 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:15:25,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:15:25,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:15:25,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:15:25,657 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 111 transitions, 299 flow [2020-04-17 23:15:25,657 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-04-17 23:15:25,685 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-04-17 23:15:25,686 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-04-17 23:15:25,687 INFO L80 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 173 events. 15/173 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 517 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 182. Up to 16 conditions per place. [2020-04-17 23:15:25,699 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-04-17 23:15:25,721 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-04-17 23:15:25,721 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-04-17 23:15:25,723 INFO L80 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 173 events. 15/173 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 517 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 182. Up to 16 conditions per place. [2020-04-17 23:15:25,729 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 8232 [2020-04-17 23:15:25,729 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:15:26,790 INFO L206 etLargeBlockEncoding]: Checked pairs total: 13260 [2020-04-17 23:15:26,790 INFO L214 etLargeBlockEncoding]: Total number of compositions: 95 [2020-04-17 23:15:26,791 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 34 transitions, 145 flow [2020-04-17 23:16:05,158 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 103764 states. [2020-04-17 23:16:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 103764 states. [2020-04-17 23:16:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 23:16:05,159 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:16:05,159 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 23:16:05,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:16:05,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:16:05,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1079248743, now seen corresponding path program 1 times [2020-04-17 23:16:05,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:16:05,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111781773] [2020-04-17 23:16:05,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:16:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:16:05,186 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 23:16:05,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111781773] [2020-04-17 23:16:05,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:16:05,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:16:05,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381853554] [2020-04-17 23:16:05,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:16:05,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:16:05,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:16:05,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:16:05,190 INFO L87 Difference]: Start difference. First operand 103764 states. Second operand 3 states. [2020-04-17 23:16:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:16:06,373 INFO L93 Difference]: Finished difference Result 122811 states and 708293 transitions. [2020-04-17 23:16:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:16:06,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 23:16:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:16:06,857 INFO L225 Difference]: With dead ends: 122811 [2020-04-17 23:16:06,857 INFO L226 Difference]: Without dead ends: 122811 [2020-04-17 23:16:06,858 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 23:16:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122811 states. [2020-04-17 23:16:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122811 to 102354. [2020-04-17 23:16:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102354 states. [2020-04-17 23:16:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102354 states to 102354 states and 603935 transitions. [2020-04-17 23:16:23,341 INFO L78 Accepts]: Start accepts. Automaton has 102354 states and 603935 transitions. Word has length 5 [2020-04-17 23:16:23,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:16:23,341 INFO L479 AbstractCegarLoop]: Abstraction has 102354 states and 603935 transitions. [2020-04-17 23:16:23,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:16:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 102354 states and 603935 transitions. [2020-04-17 23:16:23,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 23:16:23,342 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:16:23,342 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:16:23,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:16:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:16:23,342 INFO L82 PathProgramCache]: Analyzing trace with hash -423468189, now seen corresponding path program 1 times [2020-04-17 23:16:23,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:16:23,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812842948] [2020-04-17 23:16:23,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:16:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:16:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:16:23,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812842948] [2020-04-17 23:16:23,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:16:23,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:16:23,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844169551] [2020-04-17 23:16:23,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:16:23,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:16:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:16:23,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:16:23,371 INFO L87 Difference]: Start difference. First operand 102354 states and 603935 transitions. Second operand 3 states. [2020-04-17 23:16:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:16:30,293 INFO L93 Difference]: Finished difference Result 148254 states and 859795 transitions. [2020-04-17 23:16:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:16:30,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 23:16:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:16:30,916 INFO L225 Difference]: With dead ends: 148254 [2020-04-17 23:16:30,916 INFO L226 Difference]: Without dead ends: 148254 [2020-04-17 23:16:30,916 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 23:16:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148254 states. [2020-04-17 23:16:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148254 to 122716. [2020-04-17 23:16:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122716 states. [2020-04-17 23:16:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122716 states to 122716 states and 728220 transitions. [2020-04-17 23:16:50,975 INFO L78 Accepts]: Start accepts. Automaton has 122716 states and 728220 transitions. Word has length 8 [2020-04-17 23:16:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:16:50,975 INFO L479 AbstractCegarLoop]: Abstraction has 122716 states and 728220 transitions. [2020-04-17 23:16:50,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:16:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 122716 states and 728220 transitions. [2020-04-17 23:16:50,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:16:50,975 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:16:50,975 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:16:50,975 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:16:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:16:50,976 INFO L82 PathProgramCache]: Analyzing trace with hash -242594376, now seen corresponding path program 1 times [2020-04-17 23:16:50,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:16:50,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35201438] [2020-04-17 23:16:50,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:16:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:16:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:16:51,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35201438] [2020-04-17 23:16:51,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:16:51,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:16:51,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480452360] [2020-04-17 23:16:51,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:16:51,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:16:51,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:16:51,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:16:51,009 INFO L87 Difference]: Start difference. First operand 122716 states and 728220 transitions. Second operand 4 states. [2020-04-17 23:16:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:16:51,734 INFO L93 Difference]: Finished difference Result 97178 states and 571107 transitions. [2020-04-17 23:16:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:16:51,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:16:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:16:52,106 INFO L225 Difference]: With dead ends: 97178 [2020-04-17 23:16:52,106 INFO L226 Difference]: Without dead ends: 97178 [2020-04-17 23:16:52,106 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:17:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97178 states. [2020-04-17 23:17:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97178 to 76759. [2020-04-17 23:17:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76759 states. [2020-04-17 23:17:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76759 states to 76759 states and 446504 transitions. [2020-04-17 23:17:06,338 INFO L78 Accepts]: Start accepts. Automaton has 76759 states and 446504 transitions. Word has length 9 [2020-04-17 23:17:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:06,338 INFO L479 AbstractCegarLoop]: Abstraction has 76759 states and 446504 transitions. [2020-04-17 23:17:06,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:17:06,338 INFO L276 IsEmpty]: Start isEmpty. Operand 76759 states and 446504 transitions. [2020-04-17 23:17:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:17:06,338 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:06,338 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:06,339 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:06,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:06,339 INFO L82 PathProgramCache]: Analyzing trace with hash -242609250, now seen corresponding path program 1 times [2020-04-17 23:17:06,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:06,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338809469] [2020-04-17 23:17:06,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:17:06,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338809469] [2020-04-17 23:17:06,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:06,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:17:06,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333031472] [2020-04-17 23:17:06,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:17:06,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:06,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:17:06,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:17:06,364 INFO L87 Difference]: Start difference. First operand 76759 states and 446504 transitions. Second operand 4 states. [2020-04-17 23:17:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:06,811 INFO L93 Difference]: Finished difference Result 61421 states and 354199 transitions. [2020-04-17 23:17:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:06,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 23:17:06,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:07,032 INFO L225 Difference]: With dead ends: 61421 [2020-04-17 23:17:07,032 INFO L226 Difference]: Without dead ends: 61421 [2020-04-17 23:17:07,033 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:17:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61421 states. [2020-04-17 23:17:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61421 to 46083. [2020-04-17 23:17:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46083 states. [2020-04-17 23:17:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46083 states to 46083 states and 261894 transitions. [2020-04-17 23:17:18,337 INFO L78 Accepts]: Start accepts. Automaton has 46083 states and 261894 transitions. Word has length 9 [2020-04-17 23:17:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:18,338 INFO L479 AbstractCegarLoop]: Abstraction has 46083 states and 261894 transitions. [2020-04-17 23:17:18,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:17:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 46083 states and 261894 transitions. [2020-04-17 23:17:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 23:17:18,338 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:18,338 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:18,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:18,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1404864702, now seen corresponding path program 1 times [2020-04-17 23:17:18,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:18,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137672906] [2020-04-17 23:17:18,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:17:18,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137672906] [2020-04-17 23:17:18,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:18,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:17:18,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610009339] [2020-04-17 23:17:18,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:17:18,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:17:18,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:17:18,362 INFO L87 Difference]: Start difference. First operand 46083 states and 261894 transitions. Second operand 3 states. [2020-04-17 23:17:18,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:18,808 INFO L93 Difference]: Finished difference Result 69057 states and 386770 transitions. [2020-04-17 23:17:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:18,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 23:17:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:19,102 INFO L225 Difference]: With dead ends: 69057 [2020-04-17 23:17:19,102 INFO L226 Difference]: Without dead ends: 69057 [2020-04-17 23:17:19,102 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 23:17:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69057 states. [2020-04-17 23:17:27,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69057 to 57562. [2020-04-17 23:17:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57562 states. [2020-04-17 23:17:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57562 states to 57562 states and 330031 transitions. [2020-04-17 23:17:27,304 INFO L78 Accepts]: Start accepts. Automaton has 57562 states and 330031 transitions. Word has length 11 [2020-04-17 23:17:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:27,304 INFO L479 AbstractCegarLoop]: Abstraction has 57562 states and 330031 transitions. [2020-04-17 23:17:27,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:17:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 57562 states and 330031 transitions. [2020-04-17 23:17:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 23:17:27,305 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:27,305 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:27,305 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:27,305 INFO L82 PathProgramCache]: Analyzing trace with hash -601130141, now seen corresponding path program 1 times [2020-04-17 23:17:27,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:27,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661045065] [2020-04-17 23:17:27,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:17:27,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661045065] [2020-04-17 23:17:27,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:27,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:17:27,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932515749] [2020-04-17 23:17:27,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:17:27,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:27,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:17:27,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:17:27,325 INFO L87 Difference]: Start difference. First operand 57562 states and 330031 transitions. Second operand 4 states. [2020-04-17 23:17:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:27,637 INFO L93 Difference]: Finished difference Result 46067 states and 261797 transitions. [2020-04-17 23:17:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:27,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 23:17:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:28,693 INFO L225 Difference]: With dead ends: 46067 [2020-04-17 23:17:28,693 INFO L226 Difference]: Without dead ends: 46067 [2020-04-17 23:17:28,693 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:17:31,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46067 states. [2020-04-17 23:17:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46067 to 34572. [2020-04-17 23:17:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34572 states. [2020-04-17 23:17:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34572 states to 34572 states and 193563 transitions. [2020-04-17 23:17:32,047 INFO L78 Accepts]: Start accepts. Automaton has 34572 states and 193563 transitions. Word has length 12 [2020-04-17 23:17:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:32,047 INFO L479 AbstractCegarLoop]: Abstraction has 34572 states and 193563 transitions. [2020-04-17 23:17:32,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:17:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 34572 states and 193563 transitions. [2020-04-17 23:17:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 23:17:32,048 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:32,048 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:32,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:32,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1950756351, now seen corresponding path program 1 times [2020-04-17 23:17:32,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:32,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117526670] [2020-04-17 23:17:32,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 23:17:32,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117526670] [2020-04-17 23:17:32,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:32,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:17:32,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205763962] [2020-04-17 23:17:32,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:17:32,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:32,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:17:32,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:17:32,062 INFO L87 Difference]: Start difference. First operand 34572 states and 193563 transitions. Second operand 3 states. [2020-04-17 23:17:32,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:32,403 INFO L93 Difference]: Finished difference Result 51759 states and 285634 transitions. [2020-04-17 23:17:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:32,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 23:17:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:35,500 INFO L225 Difference]: With dead ends: 51759 [2020-04-17 23:17:35,500 INFO L226 Difference]: Without dead ends: 51759 [2020-04-17 23:17:35,501 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 23:17:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51759 states. [2020-04-17 23:17:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51759 to 43159. [2020-04-17 23:17:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43159 states. [2020-04-17 23:17:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43159 states to 43159 states and 243856 transitions. [2020-04-17 23:17:38,550 INFO L78 Accepts]: Start accepts. Automaton has 43159 states and 243856 transitions. Word has length 14 [2020-04-17 23:17:38,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:38,550 INFO L479 AbstractCegarLoop]: Abstraction has 43159 states and 243856 transitions. [2020-04-17 23:17:38,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:17:38,550 INFO L276 IsEmpty]: Start isEmpty. Operand 43159 states and 243856 transitions. [2020-04-17 23:17:38,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 23:17:38,551 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:38,551 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:38,551 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:38,552 INFO L82 PathProgramCache]: Analyzing trace with hash 343906870, now seen corresponding path program 1 times [2020-04-17 23:17:38,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:38,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855723503] [2020-04-17 23:17:38,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 23:17:38,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855723503] [2020-04-17 23:17:38,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:38,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:17:38,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901202069] [2020-04-17 23:17:38,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:17:38,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:17:38,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:17:38,570 INFO L87 Difference]: Start difference. First operand 43159 states and 243856 transitions. Second operand 4 states. [2020-04-17 23:17:39,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:39,258 INFO L93 Difference]: Finished difference Result 34559 states and 193478 transitions. [2020-04-17 23:17:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:39,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 23:17:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:39,376 INFO L225 Difference]: With dead ends: 34559 [2020-04-17 23:17:39,376 INFO L226 Difference]: Without dead ends: 34559 [2020-04-17 23:17:39,376 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:17:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34559 states. [2020-04-17 23:17:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34559 to 25959. [2020-04-17 23:17:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25959 states. [2020-04-17 23:17:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25959 states to 25959 states and 143100 transitions. [2020-04-17 23:17:41,747 INFO L78 Accepts]: Start accepts. Automaton has 25959 states and 143100 transitions. Word has length 15 [2020-04-17 23:17:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:41,747 INFO L479 AbstractCegarLoop]: Abstraction has 25959 states and 143100 transitions. [2020-04-17 23:17:41,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:17:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 25959 states and 143100 transitions. [2020-04-17 23:17:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:17:41,748 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:41,748 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:41,748 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:41,749 INFO L82 PathProgramCache]: Analyzing trace with hash -408592942, now seen corresponding path program 1 times [2020-04-17 23:17:41,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:41,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240662599] [2020-04-17 23:17:41,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 23:17:41,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240662599] [2020-04-17 23:17:41,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:41,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:17:41,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481838561] [2020-04-17 23:17:41,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:17:41,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:41,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:17:41,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:17:41,762 INFO L87 Difference]: Start difference. First operand 25959 states and 143100 transitions. Second operand 3 states. [2020-04-17 23:17:42,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:42,014 INFO L93 Difference]: Finished difference Result 38727 states and 210643 transitions. [2020-04-17 23:17:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:42,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 23:17:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:42,144 INFO L225 Difference]: With dead ends: 38727 [2020-04-17 23:17:42,145 INFO L226 Difference]: Without dead ends: 38727 [2020-04-17 23:17:42,145 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 23:17:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38727 states. [2020-04-17 23:17:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38727 to 32338. [2020-04-17 23:17:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32338 states. [2020-04-17 23:17:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32338 states to 32338 states and 180031 transitions. [2020-04-17 23:17:46,501 INFO L78 Accepts]: Start accepts. Automaton has 32338 states and 180031 transitions. Word has length 17 [2020-04-17 23:17:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:46,502 INFO L479 AbstractCegarLoop]: Abstraction has 32338 states and 180031 transitions. [2020-04-17 23:17:46,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:17:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 32338 states and 180031 transitions. [2020-04-17 23:17:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 23:17:46,503 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:46,503 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:46,503 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:46,503 INFO L82 PathProgramCache]: Analyzing trace with hash 218524327, now seen corresponding path program 1 times [2020-04-17 23:17:46,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:46,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9342777] [2020-04-17 23:17:46,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 23:17:46,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9342777] [2020-04-17 23:17:46,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:46,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:17:46,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151435960] [2020-04-17 23:17:46,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:17:46,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:46,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:17:46,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:17:46,522 INFO L87 Difference]: Start difference. First operand 32338 states and 180031 transitions. Second operand 4 states. [2020-04-17 23:17:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:46,762 INFO L93 Difference]: Finished difference Result 25949 states and 143030 transitions. [2020-04-17 23:17:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:46,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 23:17:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:46,858 INFO L225 Difference]: With dead ends: 25949 [2020-04-17 23:17:46,859 INFO L226 Difference]: Without dead ends: 25949 [2020-04-17 23:17:46,859 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:17:47,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25949 states. [2020-04-17 23:17:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25949 to 19560. [2020-04-17 23:17:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19560 states. [2020-04-17 23:17:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19560 states to 19560 states and 106029 transitions. [2020-04-17 23:17:48,023 INFO L78 Accepts]: Start accepts. Automaton has 19560 states and 106029 transitions. Word has length 18 [2020-04-17 23:17:48,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:48,024 INFO L479 AbstractCegarLoop]: Abstraction has 19560 states and 106029 transitions. [2020-04-17 23:17:48,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:17:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 19560 states and 106029 transitions. [2020-04-17 23:17:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 23:17:48,027 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:48,027 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:48,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:48,027 INFO L82 PathProgramCache]: Analyzing trace with hash -640482004, now seen corresponding path program 1 times [2020-04-17 23:17:48,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:48,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891063585] [2020-04-17 23:17:48,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-04-17 23:17:48,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891063585] [2020-04-17 23:17:48,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:48,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:17:48,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126735347] [2020-04-17 23:17:48,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:17:48,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:48,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:17:48,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:17:48,044 INFO L87 Difference]: Start difference. First operand 19560 states and 106029 transitions. Second operand 3 states. [2020-04-17 23:17:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:48,691 INFO L93 Difference]: Finished difference Result 28773 states and 154399 transitions. [2020-04-17 23:17:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:48,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-04-17 23:17:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:48,803 INFO L225 Difference]: With dead ends: 28773 [2020-04-17 23:17:48,803 INFO L226 Difference]: Without dead ends: 28773 [2020-04-17 23:17:48,804 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 23:17:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28773 states. [2020-04-17 23:17:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28773 to 24163. [2020-04-17 23:17:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24163 states. [2020-04-17 23:17:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24163 states to 24163 states and 132493 transitions. [2020-04-17 23:17:50,053 INFO L78 Accepts]: Start accepts. Automaton has 24163 states and 132493 transitions. Word has length 20 [2020-04-17 23:17:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:50,053 INFO L479 AbstractCegarLoop]: Abstraction has 24163 states and 132493 transitions. [2020-04-17 23:17:50,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:17:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 24163 states and 132493 transitions. [2020-04-17 23:17:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 23:17:50,056 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:50,056 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:50,056 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:50,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:50,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1619896945, now seen corresponding path program 1 times [2020-04-17 23:17:50,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:50,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687595741] [2020-04-17 23:17:50,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-04-17 23:17:50,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687595741] [2020-04-17 23:17:50,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:50,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:17:50,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690771724] [2020-04-17 23:17:50,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:17:50,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:50,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:17:50,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:17:50,095 INFO L87 Difference]: Start difference. First operand 24163 states and 132493 transitions. Second operand 4 states. [2020-04-17 23:17:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:50,278 INFO L93 Difference]: Finished difference Result 19553 states and 105977 transitions. [2020-04-17 23:17:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:50,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-04-17 23:17:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:50,342 INFO L225 Difference]: With dead ends: 19553 [2020-04-17 23:17:50,342 INFO L226 Difference]: Without dead ends: 19553 [2020-04-17 23:17:50,342 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:17:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19553 states. [2020-04-17 23:17:51,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19553 to 14943. [2020-04-17 23:17:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14943 states. [2020-04-17 23:17:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14943 states to 14943 states and 79461 transitions. [2020-04-17 23:17:51,638 INFO L78 Accepts]: Start accepts. Automaton has 14943 states and 79461 transitions. Word has length 21 [2020-04-17 23:17:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:51,639 INFO L479 AbstractCegarLoop]: Abstraction has 14943 states and 79461 transitions. [2020-04-17 23:17:51,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:17:51,639 INFO L276 IsEmpty]: Start isEmpty. Operand 14943 states and 79461 transitions. [2020-04-17 23:17:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 23:17:51,643 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:51,643 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:51,643 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:51,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1741862694, now seen corresponding path program 1 times [2020-04-17 23:17:51,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:51,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123963519] [2020-04-17 23:17:51,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:17:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-04-17 23:17:51,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123963519] [2020-04-17 23:17:51,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:17:51,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:17:51,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541656921] [2020-04-17 23:17:51,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:17:51,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:17:51,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:17:51,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:17:51,659 INFO L87 Difference]: Start difference. First operand 14943 states and 79461 transitions. Second operand 3 states. [2020-04-17 23:17:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:17:51,885 INFO L93 Difference]: Finished difference Result 20763 states and 109990 transitions. [2020-04-17 23:17:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:17:51,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-04-17 23:17:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:17:52,004 INFO L225 Difference]: With dead ends: 20763 [2020-04-17 23:17:52,005 INFO L226 Difference]: Without dead ends: 20763 [2020-04-17 23:17:52,007 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 23:17:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20763 states. [2020-04-17 23:17:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20763 to 17851. [2020-04-17 23:17:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17851 states. [2020-04-17 23:17:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17851 states to 17851 states and 96166 transitions. [2020-04-17 23:17:53,522 INFO L78 Accepts]: Start accepts. Automaton has 17851 states and 96166 transitions. Word has length 23 [2020-04-17 23:17:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:17:53,522 INFO L479 AbstractCegarLoop]: Abstraction has 17851 states and 96166 transitions. [2020-04-17 23:17:53,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:17:53,522 INFO L276 IsEmpty]: Start isEmpty. Operand 17851 states and 96166 transitions. [2020-04-17 23:17:53,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-17 23:17:53,528 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:17:53,528 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:17:53,528 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:17:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:17:53,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1837019004, now seen corresponding path program 1 times [2020-04-17 23:17:53,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:17:53,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682965401] [2020-04-17 23:17:53,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:17:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:17:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:17:53,544 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 23:17:53,544 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 23:17:53,545 WARN L363 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 23:17:53,545 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2020-04-17 23:17:53,555 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,555 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,556 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,556 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,556 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,556 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,556 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,556 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,556 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,557 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,557 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,557 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,557 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,557 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,557 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,557 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,558 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,558 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,558 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,558 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,558 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,558 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,558 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,558 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,559 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,559 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,559 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,559 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,559 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,559 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,559 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,559 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,560 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,560 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,560 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,560 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,560 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,560 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,560 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,560 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,561 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,561 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,561 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,561 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,561 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,561 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,561 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,561 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,562 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,562 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,562 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,562 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,562 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,562 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,562 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,562 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,563 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,563 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,563 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,563 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,563 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,563 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,563 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,563 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,564 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,564 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,564 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,564 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,564 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,564 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,565 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,565 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,565 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,565 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,565 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,565 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,565 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,565 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,566 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,566 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,566 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,566 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,566 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,566 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,566 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,567 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,567 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,567 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,567 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,567 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,567 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,567 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,567 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,568 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,568 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,568 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,568 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,568 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,568 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,568 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,568 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,569 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,569 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,569 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,569 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,569 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,569 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,569 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,569 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,570 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,570 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,570 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,570 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,570 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,570 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,571 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,571 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,571 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,581 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,581 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,581 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,581 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,581 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,582 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,583 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,583 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,583 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,584 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,584 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,585 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,585 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,586 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,586 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,586 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,587 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,587 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,587 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,587 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,595 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,595 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,595 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,595 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,595 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,595 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,596 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,596 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,597 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,597 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,597 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,597 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:17:53,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-04-17 23:17:53,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:17:53,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:17:53,602 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:17:53,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:17:53,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:17:53,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:17:53,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:17:53,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:17:53,604 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 124 transitions, 344 flow [2020-04-17 23:17:53,604 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-04-17 23:17:53,628 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-04-17 23:17:53,629 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-04-17 23:17:53,631 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 17/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 596 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 214. Up to 18 conditions per place. [2020-04-17 23:17:53,638 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-04-17 23:17:53,662 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-04-17 23:17:53,662 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-04-17 23:17:53,664 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 17/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 596 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 214. Up to 18 conditions per place. [2020-04-17 23:17:53,672 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 10656 [2020-04-17 23:17:53,672 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:17:54,841 INFO L206 etLargeBlockEncoding]: Checked pairs total: 14959 [2020-04-17 23:17:54,842 INFO L214 etLargeBlockEncoding]: Total number of compositions: 105 [2020-04-17 23:17:54,842 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 38 transitions, 172 flow Received shutdown request... [2020-04-17 23:18:28,941 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-17 23:18:28,944 WARN L228 ceAbstractionStarter]: Timeout [2020-04-17 23:18:28,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 11:18:28 BasicIcfg [2020-04-17 23:18:28,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 23:18:28,947 INFO L168 Benchmark]: Toolchain (without parser) took 218797.75 ms. Allocated memory was 136.3 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 99.7 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-04-17 23:18:28,947 INFO L168 Benchmark]: CDTParser took 1.27 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 23:18:28,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.61 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 97.7 MB in the beginning and 158.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-17 23:18:28,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.92 ms. Allocated memory is still 198.7 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 23:18:28,948 INFO L168 Benchmark]: Boogie Preprocessor took 26.98 ms. Allocated memory is still 198.7 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 23:18:28,949 INFO L168 Benchmark]: RCFGBuilder took 425.82 ms. Allocated memory is still 198.7 MB. Free memory was 155.5 MB in the beginning and 139.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-04-17 23:18:28,949 INFO L168 Benchmark]: TraceAbstraction took 217537.90 ms. Allocated memory was 198.7 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 139.5 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-04-17 23:18:28,951 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.61 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 97.7 MB in the beginning and 158.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.92 ms. Allocated memory is still 198.7 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.98 ms. Allocated memory is still 198.7 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.82 ms. Allocated memory is still 198.7 MB. Free memory was 155.5 MB in the beginning and 139.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217537.90 ms. Allocated memory was 198.7 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 139.5 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 34 ProgramPointsBefore, 11 ProgramPointsAfterwards, 33 TransitionsBefore, 8 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 119 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 167 CheckedPairsTotal, 30 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 48 ProgramPointsBefore, 18 ProgramPointsAfterwards, 46 TransitionsBefore, 13 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 465 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1029 CheckedPairsTotal, 37 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 62 ProgramPointsBefore, 24 ProgramPointsAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 1656 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 966 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 48 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 72 TransitionsBefore, 23 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 1585 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4331 CheckedPairsTotal, 63 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 90 ProgramPointsBefore, 36 ProgramPointsAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 4320 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 2461 VarBasedMoverChecksPositive, 58 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6550 CheckedPairsTotal, 76 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 104 ProgramPointsBefore, 42 ProgramPointsAfterwards, 98 TransitionsBefore, 33 TransitionsAfterwards, 6120 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 3 ChoiceCompositions, 3490 VarBasedMoverChecksPositive, 71 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 10455 CheckedPairsTotal, 89 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 118 ProgramPointsBefore, 48 ProgramPointsAfterwards, 111 TransitionsBefore, 34 TransitionsAfterwards, 8232 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 4656 VarBasedMoverChecksPositive, 73 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 13260 CheckedPairsTotal, 95 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 132 ProgramPointsBefore, 54 ProgramPointsAfterwards, 124 TransitionsBefore, 38 TransitionsAfterwards, 10656 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 8 ChoiceCompositions, 6256 VarBasedMoverChecksPositive, 83 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 14959 CheckedPairsTotal, 105 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 680]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 680). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 38 transitions, 172 flow. Already constructed 126410 states. Currently 34219 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 8 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 217.1s, OverallIterations: 59, TraceHistogramMax: 8, AutomataDifference: 24.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 84.2s, HoareTripleCheckerStatistics: 1566 SDtfs, 1047 SDslu, 824 SDs, 0 SdLazy, 1192 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122716occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 106.4s AutomataMinimizationTime, 52 MinimizatonAttempts, 192156 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 555 ConstructedInterpolants, 0 QuantifiedInterpolants, 8977 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 52 InterpolantComputations, 52 PerfectInterpolantSequences, 582/582 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 could not prove your program: Timeout Completed graceful shutdown