/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 11:50:50,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 11:50:50,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 11:50:50,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 11:50:50,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 11:50:50,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 11:50:50,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 11:50:50,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 11:50:50,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 11:50:50,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 11:50:50,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 11:50:50,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 11:50:50,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 11:50:50,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 11:50:50,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 11:50:50,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 11:50:50,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 11:50:50,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 11:50:50,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 11:50:50,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 11:50:50,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 11:50:50,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 11:50:50,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 11:50:50,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 11:50:50,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 11:50:50,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 11:50:50,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 11:50:50,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 11:50:50,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 11:50:50,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 11:50:50,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 11:50:50,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 11:50:50,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 11:50:50,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 11:50:50,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 11:50:50,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 11:50:50,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-18 11:50:50,710 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 11:50:50,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 11:50:50,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 11:50:50,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 11:50:50,712 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 11:50:50,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 11:50:50,712 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 11:50:50,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 11:50:50,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 11:50:50,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 11:50:50,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 11:50:50,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 11:50:50,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 11:50:50,714 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 11:50:50,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 11:50:50,714 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 11:50:50,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 11:50:50,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 11:50:50,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 11:50:50,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 11:50:50,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 11:50:50,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 11:50:50,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 11:50:50,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 11:50:50,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 11:50:50,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 11:50:50,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 11:50:50,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 11:50:50,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-18 11:50:50,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 11:50:51,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 11:50:51,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 11:50:51,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 11:50:51,029 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 11:50:51,029 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 11:50:51,030 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2019-12-18 11:50:51,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3723668f/848672cab11745b78a8cd7eeb17f0b40/FLAGa17b98521 [2019-12-18 11:50:51,652 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 11:50:51,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2019-12-18 11:50:51,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3723668f/848672cab11745b78a8cd7eeb17f0b40/FLAGa17b98521 [2019-12-18 11:50:51,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3723668f/848672cab11745b78a8cd7eeb17f0b40 [2019-12-18 11:50:51,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 11:50:51,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 11:50:51,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 11:50:51,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 11:50:51,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 11:50:51,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:50:51" (1/1) ... [2019-12-18 11:50:51,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6365334c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:51, skipping insertion in model container [2019-12-18 11:50:51,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:50:51" (1/1) ... [2019-12-18 11:50:51,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 11:50:52,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 11:50:52,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 11:50:52,507 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 11:50:52,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 11:50:52,622 INFO L208 MainTranslator]: Completed translation [2019-12-18 11:50:52,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52 WrapperNode [2019-12-18 11:50:52,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 11:50:52,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 11:50:52,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 11:50:52,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 11:50:52,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 11:50:52,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 11:50:52,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 11:50:52,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 11:50:52,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (1/1) ... [2019-12-18 11:50:52,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 11:50:52,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 11:50:52,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 11:50:52,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 11:50:52,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (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 [2019-12-18 11:50:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-18 11:50:52,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-18 11:50:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 11:50:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 11:50:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 11:50:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 11:50:52,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 11:50:52,752 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 11:50:52,892 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_inc_r_returnLabel [2019-12-18 11:50:53,058 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 11:50:53,059 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-18 11:50:53,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:50:53 BoogieIcfgContainer [2019-12-18 11:50:53,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 11:50:53,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 11:50:53,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 11:50:53,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 11:50:53,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:50:51" (1/3) ... [2019-12-18 11:50:53,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769f1818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:50:53, skipping insertion in model container [2019-12-18 11:50:53,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:52" (2/3) ... [2019-12-18 11:50:53,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769f1818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:50:53, skipping insertion in model container [2019-12-18 11:50:53,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:50:53" (3/3) ... [2019-12-18 11:50:53,079 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2019-12-18 11:50:53,088 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 11:50:53,089 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 11:50:53,095 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 11:50:53,096 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 11:50:53,119 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,119 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,119 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,121 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,121 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,122 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,122 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,123 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,124 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,124 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,125 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,131 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,132 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,132 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,132 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,132 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:53,160 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-18 11:50:53,177 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 11:50:53,177 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 11:50:53,177 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 11:50:53,177 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 11:50:53,177 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 11:50:53,177 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 11:50:53,178 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 11:50:53,178 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 11:50:53,188 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 31 transitions [2019-12-18 11:50:53,190 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions [2019-12-18 11:50:53,219 INFO L126 PetriNetUnfolder]: 4/39 cut-off events. [2019-12-18 11:50:53,220 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:50:53,225 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs. 5/37 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2019-12-18 11:50:53,227 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions [2019-12-18 11:50:53,239 INFO L126 PetriNetUnfolder]: 4/39 cut-off events. [2019-12-18 11:50:53,239 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:50:53,240 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs. 5/37 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2019-12-18 11:50:53,242 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 240 [2019-12-18 11:50:53,243 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 11:50:53,956 INFO L206 etLargeBlockEncoding]: Checked pairs total: 169 [2019-12-18 11:50:53,957 INFO L214 etLargeBlockEncoding]: Total number of compositions: 27 [2019-12-18 11:50:53,961 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 10 places, 10 transitions [2019-12-18 11:50:53,971 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2019-12-18 11:50:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-18 11:50:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 11:50:53,981 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:53,982 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 11:50:53,983 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:50:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:53,991 INFO L82 PathProgramCache]: Analyzing trace with hash 144192241, now seen corresponding path program 1 times [2019-12-18 11:50:54,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:54,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363052342] [2019-12-18 11:50:54,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:50:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:50:54,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363052342] [2019-12-18 11:50:54,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:50:54,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 11:50:54,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047185107] [2019-12-18 11:50:54,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 11:50:54,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:50:54,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 11:50:54,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:50:54,313 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-12-18 11:50:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:50:54,347 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2019-12-18 11:50:54,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 11:50:54,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-18 11:50:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:50:54,359 INFO L225 Difference]: With dead ends: 23 [2019-12-18 11:50:54,359 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 11:50:54,360 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:50:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 11:50:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-18 11:50:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-18 11:50:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2019-12-18 11:50:54,398 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2019-12-18 11:50:54,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:50:54,398 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2019-12-18 11:50:54,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 11:50:54,399 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2019-12-18 11:50:54,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 11:50:54,399 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:54,399 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-18 11:50:54,400 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:50:54,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:54,400 INFO L82 PathProgramCache]: Analyzing trace with hash 174992566, now seen corresponding path program 1 times [2019-12-18 11:50:54,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:54,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014611742] [2019-12-18 11:50:54,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:50:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:50:54,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014611742] [2019-12-18 11:50:54,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:50:54,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 11:50:54,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70245802] [2019-12-18 11:50:54,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 11:50:54,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:50:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 11:50:54,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 11:50:54,524 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2019-12-18 11:50:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:50:54,548 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2019-12-18 11:50:54,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 11:50:54,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-18 11:50:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:50:54,550 INFO L225 Difference]: With dead ends: 19 [2019-12-18 11:50:54,550 INFO L226 Difference]: Without dead ends: 19 [2019-12-18 11:50:54,552 INFO L631 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 [2019-12-18 11:50:54,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-18 11:50:54,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2019-12-18 11:50:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-18 11:50:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2019-12-18 11:50:54,560 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2019-12-18 11:50:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:50:54,566 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2019-12-18 11:50:54,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 11:50:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2019-12-18 11:50:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 11:50:54,567 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:54,567 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-18 11:50:54,568 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:50:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:54,569 INFO L82 PathProgramCache]: Analyzing trace with hash 174947503, now seen corresponding path program 1 times [2019-12-18 11:50:54,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:54,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926617257] [2019-12-18 11:50:54,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:50:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:50:54,657 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 11:50:54,657 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 11:50:54,658 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 11:50:54,658 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-18 11:50:54,667 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,668 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,668 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,668 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,669 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,669 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,670 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,670 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,671 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,671 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,672 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,672 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,672 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,672 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,673 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,674 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,674 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,674 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,674 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,678 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,678 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,678 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,678 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,679 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:54,683 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 11:50:54,683 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 11:50:54,683 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 11:50:54,684 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 11:50:54,684 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 11:50:54,684 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 11:50:54,684 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 11:50:54,684 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 11:50:54,684 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 11:50:54,687 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 44 transitions [2019-12-18 11:50:54,687 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions [2019-12-18 11:50:54,715 INFO L126 PetriNetUnfolder]: 7/61 cut-off events. [2019-12-18 11:50:54,715 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:50:54,716 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 7/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs. 14/63 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2019-12-18 11:50:54,723 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions [2019-12-18 11:50:54,740 INFO L126 PetriNetUnfolder]: 7/61 cut-off events. [2019-12-18 11:50:54,741 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:50:54,743 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 7/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs. 14/63 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2019-12-18 11:50:54,746 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 792 [2019-12-18 11:50:54,746 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 11:50:55,439 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1434 [2019-12-18 11:50:55,441 INFO L214 etLargeBlockEncoding]: Total number of compositions: 29 [2019-12-18 11:50:55,441 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 20 transitions [2019-12-18 11:50:55,461 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 208 states. [2019-12-18 11:50:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2019-12-18 11:50:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 11:50:55,463 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:55,463 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:50:55,464 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:50:55,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:55,464 INFO L82 PathProgramCache]: Analyzing trace with hash 569025362, now seen corresponding path program 1 times [2019-12-18 11:50:55,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:55,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321740525] [2019-12-18 11:50:55,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:50:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:50:55,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321740525] [2019-12-18 11:50:55,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:50:55,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:50:55,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657986417] [2019-12-18 11:50:55,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:50:55,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:50:55,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:50:55,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:50:55,592 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 5 states. [2019-12-18 11:50:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:50:55,663 INFO L93 Difference]: Finished difference Result 251 states and 667 transitions. [2019-12-18 11:50:55,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:50:55,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 11:50:55,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:50:55,670 INFO L225 Difference]: With dead ends: 251 [2019-12-18 11:50:55,671 INFO L226 Difference]: Without dead ends: 251 [2019-12-18 11:50:55,671 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:50:55,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2019-12-18 11:50:55,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2019-12-18 11:50:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-12-18 11:50:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 561 transitions. [2019-12-18 11:50:55,728 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 561 transitions. Word has length 7 [2019-12-18 11:50:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:50:55,729 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 561 transitions. [2019-12-18 11:50:55,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:50:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 561 transitions. [2019-12-18 11:50:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 11:50:55,734 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:55,735 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2019-12-18 11:50:55,735 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:50:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:55,735 INFO L82 PathProgramCache]: Analyzing trace with hash 424323391, now seen corresponding path program 1 times [2019-12-18 11:50:55,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:55,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532763875] [2019-12-18 11:50:55,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:50:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:50:55,778 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 11:50:55,781 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 11:50:55,781 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 11:50:55,781 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-18 11:50:55,789 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,789 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,791 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,791 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,791 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,791 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,792 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,792 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,792 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,792 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,792 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,793 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,793 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,794 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,794 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,794 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,794 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,795 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,795 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,795 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,795 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,795 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,796 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,796 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,796 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,796 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,796 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,797 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,797 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,797 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,798 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,798 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,798 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,800 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,800 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,800 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,800 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,801 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,802 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,802 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,802 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,803 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,803 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:55,804 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-18 11:50:55,805 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 11:50:55,805 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 11:50:55,805 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 11:50:55,805 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 11:50:55,805 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 11:50:55,805 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 11:50:55,806 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 11:50:55,806 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 11:50:55,807 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 57 transitions [2019-12-18 11:50:55,808 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions [2019-12-18 11:50:55,833 INFO L126 PetriNetUnfolder]: 10/83 cut-off events. [2019-12-18 11:50:55,833 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:50:55,835 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 10/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 195 event pairs. 27/93 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2019-12-18 11:50:55,839 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions [2019-12-18 11:50:55,851 INFO L126 PetriNetUnfolder]: 10/83 cut-off events. [2019-12-18 11:50:55,851 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:50:55,853 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 10/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 195 event pairs. 27/93 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2019-12-18 11:50:55,857 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1656 [2019-12-18 11:50:55,857 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 11:50:56,670 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3648 [2019-12-18 11:50:56,670 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2019-12-18 11:50:56,670 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 28 transitions [2019-12-18 11:50:56,746 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1252 states. [2019-12-18 11:50:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states. [2019-12-18 11:50:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 11:50:56,747 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:56,748 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:50:56,748 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:50:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1782709548, now seen corresponding path program 1 times [2019-12-18 11:50:56,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:56,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716374316] [2019-12-18 11:50:56,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:50:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:50:56,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716374316] [2019-12-18 11:50:56,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:50:56,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:50:56,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594482646] [2019-12-18 11:50:56,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:50:56,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:50:56,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:50:56,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:50:56,818 INFO L87 Difference]: Start difference. First operand 1252 states. Second operand 5 states. [2019-12-18 11:50:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:50:56,938 INFO L93 Difference]: Finished difference Result 1547 states and 5625 transitions. [2019-12-18 11:50:56,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:50:56,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 11:50:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:50:56,959 INFO L225 Difference]: With dead ends: 1547 [2019-12-18 11:50:56,959 INFO L226 Difference]: Without dead ends: 1547 [2019-12-18 11:50:56,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:50:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2019-12-18 11:50:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1213. [2019-12-18 11:50:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-12-18 11:50:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 4426 transitions. [2019-12-18 11:50:57,075 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 4426 transitions. Word has length 7 [2019-12-18 11:50:57,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:50:57,075 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 4426 transitions. [2019-12-18 11:50:57,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:50:57,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 4426 transitions. [2019-12-18 11:50:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 11:50:57,078 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:57,078 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:50:57,078 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:50:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:57,078 INFO L82 PathProgramCache]: Analyzing trace with hash 508067418, now seen corresponding path program 1 times [2019-12-18 11:50:57,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:57,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126761068] [2019-12-18 11:50:57,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:50:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:50:57,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126761068] [2019-12-18 11:50:57,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:50:57,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:50:57,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571586718] [2019-12-18 11:50:57,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 11:50:57,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:50:57,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 11:50:57,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:50:57,187 INFO L87 Difference]: Start difference. First operand 1213 states and 4426 transitions. Second operand 4 states. [2019-12-18 11:50:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:50:57,299 INFO L93 Difference]: Finished difference Result 1516 states and 5554 transitions. [2019-12-18 11:50:57,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 11:50:57,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 11:50:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:50:57,312 INFO L225 Difference]: With dead ends: 1516 [2019-12-18 11:50:57,313 INFO L226 Difference]: Without dead ends: 1516 [2019-12-18 11:50:57,313 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:50:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2019-12-18 11:50:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1241. [2019-12-18 11:50:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2019-12-18 11:50:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4558 transitions. [2019-12-18 11:50:57,372 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4558 transitions. Word has length 9 [2019-12-18 11:50:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:50:57,372 INFO L462 AbstractCegarLoop]: Abstraction has 1241 states and 4558 transitions. [2019-12-18 11:50:57,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 11:50:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4558 transitions. [2019-12-18 11:50:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 11:50:57,374 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:57,374 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:50:57,374 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:50:57,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:57,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1404558460, now seen corresponding path program 1 times [2019-12-18 11:50:57,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:57,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937313143] [2019-12-18 11:50:57,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:50:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 11:50:57,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937313143] [2019-12-18 11:50:57,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:50:57,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:50:57,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146275148] [2019-12-18 11:50:57,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:50:57,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:50:57,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:50:57,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:50:57,442 INFO L87 Difference]: Start difference. First operand 1241 states and 4558 transitions. Second operand 5 states. [2019-12-18 11:50:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:50:57,504 INFO L93 Difference]: Finished difference Result 1685 states and 6153 transitions. [2019-12-18 11:50:57,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:50:57,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 11:50:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:50:57,519 INFO L225 Difference]: With dead ends: 1685 [2019-12-18 11:50:57,520 INFO L226 Difference]: Without dead ends: 1685 [2019-12-18 11:50:57,520 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:50:57,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2019-12-18 11:50:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1404. [2019-12-18 11:50:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2019-12-18 11:50:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5142 transitions. [2019-12-18 11:50:57,607 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5142 transitions. Word has length 10 [2019-12-18 11:50:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:50:57,608 INFO L462 AbstractCegarLoop]: Abstraction has 1404 states and 5142 transitions. [2019-12-18 11:50:57,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:50:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5142 transitions. [2019-12-18 11:50:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 11:50:57,610 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:57,611 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:50:57,611 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:50:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:57,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1160945276, now seen corresponding path program 1 times [2019-12-18 11:50:57,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:57,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304457648] [2019-12-18 11:50:57,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:50:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 11:50:57,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304457648] [2019-12-18 11:50:57,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:50:57,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:50:57,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593659960] [2019-12-18 11:50:57,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 11:50:57,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:50:57,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 11:50:57,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:50:57,685 INFO L87 Difference]: Start difference. First operand 1404 states and 5142 transitions. Second operand 4 states. [2019-12-18 11:50:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:50:57,791 INFO L93 Difference]: Finished difference Result 1785 states and 6555 transitions. [2019-12-18 11:50:57,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 11:50:57,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 11:50:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:50:57,807 INFO L225 Difference]: With dead ends: 1785 [2019-12-18 11:50:57,807 INFO L226 Difference]: Without dead ends: 1785 [2019-12-18 11:50:57,807 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:50:57,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2019-12-18 11:50:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1545. [2019-12-18 11:50:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2019-12-18 11:50:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 5692 transitions. [2019-12-18 11:50:57,871 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 5692 transitions. Word has length 12 [2019-12-18 11:50:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:50:57,871 INFO L462 AbstractCegarLoop]: Abstraction has 1545 states and 5692 transitions. [2019-12-18 11:50:57,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 11:50:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 5692 transitions. [2019-12-18 11:50:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 11:50:57,875 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:57,875 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2019-12-18 11:50:57,876 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:50:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:57,876 INFO L82 PathProgramCache]: Analyzing trace with hash -584245207, now seen corresponding path program 1 times [2019-12-18 11:50:57,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:57,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539717214] [2019-12-18 11:50:57,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:50:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:50:57,912 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 11:50:57,913 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 11:50:57,914 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 11:50:57,914 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-18 11:50:57,922 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,923 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,923 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,923 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,925 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,926 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,926 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,926 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,926 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,926 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,926 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,927 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,927 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,927 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,927 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,927 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,928 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,928 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,930 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,930 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,930 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,930 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,930 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,930 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,931 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,932 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,932 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,934 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,934 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,934 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,935 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,935 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,936 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,936 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,936 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,936 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,938 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,938 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:50:57,940 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-18 11:50:57,940 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 11:50:57,940 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 11:50:57,940 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 11:50:57,941 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 11:50:57,941 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 11:50:57,941 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 11:50:57,941 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 11:50:57,941 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 11:50:57,942 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions [2019-12-18 11:50:57,942 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions [2019-12-18 11:50:57,965 INFO L126 PetriNetUnfolder]: 13/105 cut-off events. [2019-12-18 11:50:57,965 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:50:57,971 INFO L76 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 105 events. 13/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs. 44/127 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2019-12-18 11:50:57,976 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions [2019-12-18 11:50:58,008 INFO L126 PetriNetUnfolder]: 13/105 cut-off events. [2019-12-18 11:50:58,008 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:50:58,011 INFO L76 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 105 events. 13/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs. 44/127 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2019-12-18 11:50:58,016 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2019-12-18 11:50:58,016 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 11:50:59,018 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6531 [2019-12-18 11:50:59,019 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2019-12-18 11:50:59,019 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 37 transitions [2019-12-18 11:50:59,557 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7516 states. [2019-12-18 11:50:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states. [2019-12-18 11:50:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 11:50:59,557 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:50:59,557 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:50:59,558 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:50:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:50:59,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1253735484, now seen corresponding path program 1 times [2019-12-18 11:50:59,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:50:59,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324222314] [2019-12-18 11:50:59,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:50:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:50:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:50:59,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324222314] [2019-12-18 11:50:59,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:50:59,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:50:59,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091328458] [2019-12-18 11:50:59,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:50:59,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:50:59,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:50:59,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:50:59,611 INFO L87 Difference]: Start difference. First operand 7516 states. Second operand 5 states. [2019-12-18 11:50:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:50:59,829 INFO L93 Difference]: Finished difference Result 8945 states and 41357 transitions. [2019-12-18 11:50:59,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:50:59,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 11:50:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:50:59,922 INFO L225 Difference]: With dead ends: 8945 [2019-12-18 11:50:59,922 INFO L226 Difference]: Without dead ends: 8945 [2019-12-18 11:50:59,922 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:00,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2019-12-18 11:51:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6943. [2019-12-18 11:51:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2019-12-18 11:51:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 32243 transitions. [2019-12-18 11:51:00,268 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 32243 transitions. Word has length 7 [2019-12-18 11:51:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:00,269 INFO L462 AbstractCegarLoop]: Abstraction has 6943 states and 32243 transitions. [2019-12-18 11:51:00,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:51:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 32243 transitions. [2019-12-18 11:51:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 11:51:00,269 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:00,269 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:00,270 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:51:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:00,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2045994371, now seen corresponding path program 1 times [2019-12-18 11:51:00,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:00,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54851333] [2019-12-18 11:51:00,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:51:00,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54851333] [2019-12-18 11:51:00,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:00,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:00,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752844060] [2019-12-18 11:51:00,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 11:51:00,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:00,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 11:51:00,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:00,312 INFO L87 Difference]: Start difference. First operand 6943 states and 32243 transitions. Second operand 4 states. [2019-12-18 11:51:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:00,994 INFO L93 Difference]: Finished difference Result 9334 states and 43415 transitions. [2019-12-18 11:51:00,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 11:51:00,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 11:51:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:01,043 INFO L225 Difference]: With dead ends: 9334 [2019-12-18 11:51:01,043 INFO L226 Difference]: Without dead ends: 9334 [2019-12-18 11:51:01,044 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2019-12-18 11:51:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 7850. [2019-12-18 11:51:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7850 states. [2019-12-18 11:51:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 36573 transitions. [2019-12-18 11:51:01,406 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 36573 transitions. Word has length 9 [2019-12-18 11:51:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:01,407 INFO L462 AbstractCegarLoop]: Abstraction has 7850 states and 36573 transitions. [2019-12-18 11:51:01,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 11:51:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 36573 transitions. [2019-12-18 11:51:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 11:51:01,408 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:01,408 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:01,408 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:51:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:01,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1685612685, now seen corresponding path program 1 times [2019-12-18 11:51:01,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:01,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566574984] [2019-12-18 11:51:01,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 11:51:01,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566574984] [2019-12-18 11:51:01,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:01,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:01,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751939409] [2019-12-18 11:51:01,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:51:01,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:01,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:51:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:01,465 INFO L87 Difference]: Start difference. First operand 7850 states and 36573 transitions. Second operand 5 states. [2019-12-18 11:51:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:01,698 INFO L93 Difference]: Finished difference Result 10343 states and 47933 transitions. [2019-12-18 11:51:01,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:51:01,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 11:51:01,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:01,740 INFO L225 Difference]: With dead ends: 10343 [2019-12-18 11:51:01,741 INFO L226 Difference]: Without dead ends: 10343 [2019-12-18 11:51:01,742 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2019-12-18 11:51:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 8547. [2019-12-18 11:51:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8547 states. [2019-12-18 11:51:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 39726 transitions. [2019-12-18 11:51:02,064 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 39726 transitions. Word has length 10 [2019-12-18 11:51:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:02,064 INFO L462 AbstractCegarLoop]: Abstraction has 8547 states and 39726 transitions. [2019-12-18 11:51:02,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:51:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 39726 transitions. [2019-12-18 11:51:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 11:51:02,065 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:02,065 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:02,065 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:51:02,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:02,065 INFO L82 PathProgramCache]: Analyzing trace with hash -671121541, now seen corresponding path program 1 times [2019-12-18 11:51:02,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:02,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25598043] [2019-12-18 11:51:02,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 11:51:02,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25598043] [2019-12-18 11:51:02,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:02,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:02,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71949302] [2019-12-18 11:51:02,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 11:51:02,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:02,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 11:51:02,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:02,120 INFO L87 Difference]: Start difference. First operand 8547 states and 39726 transitions. Second operand 4 states. [2019-12-18 11:51:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:02,330 INFO L93 Difference]: Finished difference Result 11574 states and 53865 transitions. [2019-12-18 11:51:02,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 11:51:02,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 11:51:02,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:02,538 INFO L225 Difference]: With dead ends: 11574 [2019-12-18 11:51:02,538 INFO L226 Difference]: Without dead ends: 11574 [2019-12-18 11:51:02,539 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11574 states. [2019-12-18 11:51:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11574 to 10068. [2019-12-18 11:51:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10068 states. [2019-12-18 11:51:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 46954 transitions. [2019-12-18 11:51:02,870 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 46954 transitions. Word has length 12 [2019-12-18 11:51:02,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:02,870 INFO L462 AbstractCegarLoop]: Abstraction has 10068 states and 46954 transitions. [2019-12-18 11:51:02,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 11:51:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 46954 transitions. [2019-12-18 11:51:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 11:51:02,871 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:02,871 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:02,871 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:51:02,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:02,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1258447422, now seen corresponding path program 1 times [2019-12-18 11:51:02,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:02,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103943736] [2019-12-18 11:51:02,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 11:51:02,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103943736] [2019-12-18 11:51:02,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:02,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:02,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315871830] [2019-12-18 11:51:02,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:51:02,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:02,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:51:02,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:02,938 INFO L87 Difference]: Start difference. First operand 10068 states and 46954 transitions. Second operand 5 states. [2019-12-18 11:51:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:03,066 INFO L93 Difference]: Finished difference Result 12128 states and 56330 transitions. [2019-12-18 11:51:03,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:51:03,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-18 11:51:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:03,817 INFO L225 Difference]: With dead ends: 12128 [2019-12-18 11:51:03,818 INFO L226 Difference]: Without dead ends: 12128 [2019-12-18 11:51:03,818 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12128 states. [2019-12-18 11:51:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12128 to 10579. [2019-12-18 11:51:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10579 states. [2019-12-18 11:51:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10579 states to 10579 states and 49194 transitions. [2019-12-18 11:51:04,153 INFO L78 Accepts]: Start accepts. Automaton has 10579 states and 49194 transitions. Word has length 13 [2019-12-18 11:51:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:04,154 INFO L462 AbstractCegarLoop]: Abstraction has 10579 states and 49194 transitions. [2019-12-18 11:51:04,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:51:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 10579 states and 49194 transitions. [2019-12-18 11:51:04,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 11:51:04,155 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:04,155 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:04,155 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:51:04,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash -572546880, now seen corresponding path program 1 times [2019-12-18 11:51:04,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:04,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298645285] [2019-12-18 11:51:04,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 11:51:04,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298645285] [2019-12-18 11:51:04,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:04,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 11:51:04,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850558975] [2019-12-18 11:51:04,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:51:04,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:04,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:51:04,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:04,212 INFO L87 Difference]: Start difference. First operand 10579 states and 49194 transitions. Second operand 5 states. [2019-12-18 11:51:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:04,303 INFO L93 Difference]: Finished difference Result 2356 states and 8479 transitions. [2019-12-18 11:51:04,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:51:04,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-18 11:51:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:04,311 INFO L225 Difference]: With dead ends: 2356 [2019-12-18 11:51:04,311 INFO L226 Difference]: Without dead ends: 2356 [2019-12-18 11:51:04,311 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2019-12-18 11:51:04,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1991. [2019-12-18 11:51:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2019-12-18 11:51:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2019-12-18 11:51:04,361 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 13 [2019-12-18 11:51:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:04,361 INFO L462 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2019-12-18 11:51:04,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:51:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2019-12-18 11:51:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 11:51:04,363 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:04,363 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:04,363 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 11:51:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:04,364 INFO L82 PathProgramCache]: Analyzing trace with hash -441088886, now seen corresponding path program 1 times [2019-12-18 11:51:04,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:04,364 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709070517] [2019-12-18 11:51:04,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:51:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:51:04,380 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 11:51:04,380 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 11:51:04,380 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 11:51:04,380 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-18 11:51:04,388 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,388 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,388 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,388 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,388 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,389 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,389 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,389 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,389 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,389 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,389 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,390 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,390 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,390 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,390 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,390 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,390 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,390 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,391 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,391 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,391 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,391 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,391 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,392 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,392 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,392 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,392 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,392 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,392 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,392 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,393 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,393 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,393 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,393 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,393 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,394 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,394 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,394 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,394 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,394 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,395 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,395 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,395 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,395 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,396 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,396 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,396 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,396 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,396 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,397 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,397 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,397 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,397 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,398 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,398 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,398 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,399 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,399 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,399 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,399 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,402 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,402 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,403 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,403 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,403 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,405 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,405 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,406 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,406 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,406 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,408 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,408 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,408 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,408 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,409 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,411 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,411 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,412 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,412 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,412 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:04,414 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-18 11:51:04,414 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 11:51:04,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 11:51:04,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 11:51:04,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 11:51:04,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 11:51:04,415 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 11:51:04,415 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 11:51:04,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 11:51:04,417 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 83 transitions [2019-12-18 11:51:04,417 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions [2019-12-18 11:51:04,433 INFO L126 PetriNetUnfolder]: 16/127 cut-off events. [2019-12-18 11:51:04,434 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:51:04,437 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 127 events. 16/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs. 65/165 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2019-12-18 11:51:04,448 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions [2019-12-18 11:51:04,464 INFO L126 PetriNetUnfolder]: 16/127 cut-off events. [2019-12-18 11:51:04,465 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:51:04,468 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 127 events. 16/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs. 65/165 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2019-12-18 11:51:04,478 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4320 [2019-12-18 11:51:04,479 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 11:51:05,502 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8881 [2019-12-18 11:51:05,503 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2019-12-18 11:51:05,503 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 43 transitions [2019-12-18 11:51:12,043 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 45100 states. [2019-12-18 11:51:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states. [2019-12-18 11:51:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 11:51:12,043 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:12,044 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:12,044 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:12,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash 726122603, now seen corresponding path program 1 times [2019-12-18 11:51:12,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:12,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950474134] [2019-12-18 11:51:12,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:51:12,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950474134] [2019-12-18 11:51:12,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:12,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:12,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148480328] [2019-12-18 11:51:12,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:51:12,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:12,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:51:12,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:12,102 INFO L87 Difference]: Start difference. First operand 45100 states. Second operand 5 states. [2019-12-18 11:51:12,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:12,856 INFO L93 Difference]: Finished difference Result 50507 states and 283723 transitions. [2019-12-18 11:51:12,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:51:12,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 11:51:12,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:13,042 INFO L225 Difference]: With dead ends: 50507 [2019-12-18 11:51:13,042 INFO L226 Difference]: Without dead ends: 50507 [2019-12-18 11:51:13,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:15,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50507 states. [2019-12-18 11:51:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50507 to 39997. [2019-12-18 11:51:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39997 states. [2019-12-18 11:51:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39997 states to 39997 states and 225588 transitions. [2019-12-18 11:51:16,851 INFO L78 Accepts]: Start accepts. Automaton has 39997 states and 225588 transitions. Word has length 7 [2019-12-18 11:51:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:16,851 INFO L462 AbstractCegarLoop]: Abstraction has 39997 states and 225588 transitions. [2019-12-18 11:51:16,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:51:16,851 INFO L276 IsEmpty]: Start isEmpty. Operand 39997 states and 225588 transitions. [2019-12-18 11:51:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 11:51:16,852 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:16,852 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:16,852 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:16,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2019106765, now seen corresponding path program 1 times [2019-12-18 11:51:16,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:16,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133595386] [2019-12-18 11:51:16,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:51:16,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133595386] [2019-12-18 11:51:16,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:16,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:16,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580581874] [2019-12-18 11:51:16,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 11:51:16,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 11:51:16,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:16,896 INFO L87 Difference]: Start difference. First operand 39997 states and 225588 transitions. Second operand 4 states. [2019-12-18 11:51:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:17,372 INFO L93 Difference]: Finished difference Result 56104 states and 316572 transitions. [2019-12-18 11:51:17,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 11:51:17,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 11:51:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:17,574 INFO L225 Difference]: With dead ends: 56104 [2019-12-18 11:51:17,575 INFO L226 Difference]: Without dead ends: 56104 [2019-12-18 11:51:17,575 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:20,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56104 states. [2019-12-18 11:51:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56104 to 48029. [2019-12-18 11:51:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48029 states. [2019-12-18 11:51:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48029 states to 48029 states and 271277 transitions. [2019-12-18 11:51:22,109 INFO L78 Accepts]: Start accepts. Automaton has 48029 states and 271277 transitions. Word has length 9 [2019-12-18 11:51:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:22,110 INFO L462 AbstractCegarLoop]: Abstraction has 48029 states and 271277 transitions. [2019-12-18 11:51:22,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 11:51:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 48029 states and 271277 transitions. [2019-12-18 11:51:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 11:51:22,110 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:22,110 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:22,111 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:22,111 INFO L82 PathProgramCache]: Analyzing trace with hash 112098818, now seen corresponding path program 1 times [2019-12-18 11:51:22,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:22,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218875716] [2019-12-18 11:51:22,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 11:51:22,177 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218875716] [2019-12-18 11:51:22,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:22,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:22,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201824843] [2019-12-18 11:51:22,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:51:22,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:22,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:51:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:22,180 INFO L87 Difference]: Start difference. First operand 48029 states and 271277 transitions. Second operand 5 states. [2019-12-18 11:51:22,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:22,655 INFO L93 Difference]: Finished difference Result 60653 states and 341167 transitions. [2019-12-18 11:51:22,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:51:22,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 11:51:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:25,972 INFO L225 Difference]: With dead ends: 60653 [2019-12-18 11:51:25,972 INFO L226 Difference]: Without dead ends: 60653 [2019-12-18 11:51:25,972 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60653 states. [2019-12-18 11:51:27,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60653 to 50928. [2019-12-18 11:51:27,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50928 states. [2019-12-18 11:51:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50928 states to 50928 states and 287199 transitions. [2019-12-18 11:51:27,719 INFO L78 Accepts]: Start accepts. Automaton has 50928 states and 287199 transitions. Word has length 10 [2019-12-18 11:51:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:27,719 INFO L462 AbstractCegarLoop]: Abstraction has 50928 states and 287199 transitions. [2019-12-18 11:51:27,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:51:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 50928 states and 287199 transitions. [2019-12-18 11:51:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 11:51:27,720 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:27,720 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:27,720 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:27,721 INFO L82 PathProgramCache]: Analyzing trace with hash 352805076, now seen corresponding path program 1 times [2019-12-18 11:51:27,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:27,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399088334] [2019-12-18 11:51:27,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 11:51:27,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399088334] [2019-12-18 11:51:27,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:27,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:27,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836688636] [2019-12-18 11:51:27,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 11:51:27,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:27,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 11:51:27,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:27,764 INFO L87 Difference]: Start difference. First operand 50928 states and 287199 transitions. Second operand 4 states. [2019-12-18 11:51:28,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:28,507 INFO L93 Difference]: Finished difference Result 71415 states and 402930 transitions. [2019-12-18 11:51:28,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 11:51:28,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 11:51:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:29,653 INFO L225 Difference]: With dead ends: 71415 [2019-12-18 11:51:29,653 INFO L226 Difference]: Without dead ends: 71415 [2019-12-18 11:51:29,654 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71415 states. [2019-12-18 11:51:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71415 to 62439. [2019-12-18 11:51:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62439 states. [2019-12-18 11:51:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62439 states to 62439 states and 352729 transitions. [2019-12-18 11:51:35,015 INFO L78 Accepts]: Start accepts. Automaton has 62439 states and 352729 transitions. Word has length 12 [2019-12-18 11:51:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:35,015 INFO L462 AbstractCegarLoop]: Abstraction has 62439 states and 352729 transitions. [2019-12-18 11:51:35,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 11:51:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 62439 states and 352729 transitions. [2019-12-18 11:51:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 11:51:35,016 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:35,016 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:35,016 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:35,017 INFO L82 PathProgramCache]: Analyzing trace with hash 2145715478, now seen corresponding path program 1 times [2019-12-18 11:51:35,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:35,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103937751] [2019-12-18 11:51:35,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:51:35,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103937751] [2019-12-18 11:51:35,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533709286] [2019-12-18 11:51:35,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 11:51:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:35,152 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-18 11:51:35,153 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 11:51:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:51:35,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 11:51:35,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2019-12-18 11:51:35,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606302666] [2019-12-18 11:51:35,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-18 11:51:35,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:35,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-18 11:51:35,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-18 11:51:35,226 INFO L87 Difference]: Start difference. First operand 62439 states and 352729 transitions. Second operand 9 states. [2019-12-18 11:51:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:35,640 INFO L93 Difference]: Finished difference Result 8460 states and 36312 transitions. [2019-12-18 11:51:35,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-18 11:51:35,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-12-18 11:51:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:35,663 INFO L225 Difference]: With dead ends: 8460 [2019-12-18 11:51:35,663 INFO L226 Difference]: Without dead ends: 8460 [2019-12-18 11:51:35,664 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-18 11:51:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8460 states. [2019-12-18 11:51:35,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8460 to 6538. [2019-12-18 11:51:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2019-12-18 11:51:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 27580 transitions. [2019-12-18 11:51:35,804 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 27580 transitions. Word has length 13 [2019-12-18 11:51:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:35,804 INFO L462 AbstractCegarLoop]: Abstraction has 6538 states and 27580 transitions. [2019-12-18 11:51:35,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-18 11:51:35,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 27580 transitions. [2019-12-18 11:51:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 11:51:35,807 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:35,807 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:36,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 11:51:36,011 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash 33841388, now seen corresponding path program 1 times [2019-12-18 11:51:36,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:36,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244241933] [2019-12-18 11:51:36,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 11:51:36,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244241933] [2019-12-18 11:51:36,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:36,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:36,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856887726] [2019-12-18 11:51:36,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:51:36,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:36,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:51:36,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:36,124 INFO L87 Difference]: Start difference. First operand 6538 states and 27580 transitions. Second operand 5 states. [2019-12-18 11:51:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:36,307 INFO L93 Difference]: Finished difference Result 11626 states and 49057 transitions. [2019-12-18 11:51:36,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:51:36,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-18 11:51:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:36,343 INFO L225 Difference]: With dead ends: 11626 [2019-12-18 11:51:36,343 INFO L226 Difference]: Without dead ends: 11626 [2019-12-18 11:51:36,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2019-12-18 11:51:36,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 7402. [2019-12-18 11:51:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2019-12-18 11:51:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 31270 transitions. [2019-12-18 11:51:36,561 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 31270 transitions. Word has length 13 [2019-12-18 11:51:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:36,561 INFO L462 AbstractCegarLoop]: Abstraction has 7402 states and 31270 transitions. [2019-12-18 11:51:36,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:51:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 31270 transitions. [2019-12-18 11:51:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 11:51:36,563 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:36,563 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:36,563 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:36,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:36,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1838131737, now seen corresponding path program 1 times [2019-12-18 11:51:36,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:36,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272626379] [2019-12-18 11:51:36,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:37,267 WARN L192 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-12-18 11:51:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 11:51:37,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272626379] [2019-12-18 11:51:37,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:37,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:37,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276784957] [2019-12-18 11:51:37,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 11:51:37,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:37,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 11:51:37,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:37,302 INFO L87 Difference]: Start difference. First operand 7402 states and 31270 transitions. Second operand 4 states. [2019-12-18 11:51:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:37,408 INFO L93 Difference]: Finished difference Result 6970 states and 29425 transitions. [2019-12-18 11:51:37,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 11:51:37,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-18 11:51:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:37,423 INFO L225 Difference]: With dead ends: 6970 [2019-12-18 11:51:37,423 INFO L226 Difference]: Without dead ends: 6970 [2019-12-18 11:51:37,423 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 11:51:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2019-12-18 11:51:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6106. [2019-12-18 11:51:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2019-12-18 11:51:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 25735 transitions. [2019-12-18 11:51:37,545 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 25735 transitions. Word has length 15 [2019-12-18 11:51:37,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:37,545 INFO L462 AbstractCegarLoop]: Abstraction has 6106 states and 25735 transitions. [2019-12-18 11:51:37,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 11:51:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 25735 transitions. [2019-12-18 11:51:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 11:51:37,547 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:37,548 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:37,548 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:37,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:37,548 INFO L82 PathProgramCache]: Analyzing trace with hash 727939589, now seen corresponding path program 1 times [2019-12-18 11:51:37,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:37,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948451964] [2019-12-18 11:51:37,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:51:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 11:51:37,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948451964] [2019-12-18 11:51:37,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:51:37,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:51:37,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461622792] [2019-12-18 11:51:37,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:51:37,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:51:37,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:51:37,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:37,619 INFO L87 Difference]: Start difference. First operand 6106 states and 25735 transitions. Second operand 5 states. [2019-12-18 11:51:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:51:37,754 INFO L93 Difference]: Finished difference Result 10825 states and 45769 transitions. [2019-12-18 11:51:37,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:51:37,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-18 11:51:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 11:51:37,778 INFO L225 Difference]: With dead ends: 10825 [2019-12-18 11:51:37,779 INFO L226 Difference]: Without dead ends: 10825 [2019-12-18 11:51:37,779 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:51:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2019-12-18 11:51:37,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 6916. [2019-12-18 11:51:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2019-12-18 11:51:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 29245 transitions. [2019-12-18 11:51:37,935 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 29245 transitions. Word has length 16 [2019-12-18 11:51:37,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 11:51:37,935 INFO L462 AbstractCegarLoop]: Abstraction has 6916 states and 29245 transitions. [2019-12-18 11:51:37,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 11:51:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 29245 transitions. [2019-12-18 11:51:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-18 11:51:37,939 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:51:37,940 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:51:37,940 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 11:51:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:51:37,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1525432798, now seen corresponding path program 1 times [2019-12-18 11:51:37,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:51:37,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880812642] [2019-12-18 11:51:37,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:51:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:51:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 11:51:37,956 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 11:51:37,956 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 11:51:37,956 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 11:51:37,956 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-18 11:51:37,965 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,968 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,969 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,970 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,970 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,970 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,970 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,971 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,971 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,971 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,971 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,971 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,971 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,972 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,972 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,972 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,972 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,972 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,972 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,973 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,973 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,973 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,973 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,973 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,973 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,973 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,974 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,974 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,974 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,974 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,974 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,975 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,975 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,987 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,987 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,988 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,988 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,988 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,989 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,989 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,989 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,990 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,990 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,991 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,991 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,991 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,991 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:37,991 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,002 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,002 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,003 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,003 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,003 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,005 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,005 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,005 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,006 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,006 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 11:51:38,013 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-18 11:51:38,013 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 11:51:38,014 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 11:51:38,014 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 11:51:38,014 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 11:51:38,014 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 11:51:38,014 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 11:51:38,014 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 11:51:38,014 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 11:51:38,015 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions [2019-12-18 11:51:38,016 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions [2019-12-18 11:51:38,041 INFO L126 PetriNetUnfolder]: 19/149 cut-off events. [2019-12-18 11:51:38,041 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:51:38,044 INFO L76 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 149 events. 19/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 421 event pairs. 90/207 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2019-12-18 11:51:38,054 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions [2019-12-18 11:51:38,074 INFO L126 PetriNetUnfolder]: 19/149 cut-off events. [2019-12-18 11:51:38,074 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 11:51:38,077 INFO L76 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 149 events. 19/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 421 event pairs. 90/207 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2019-12-18 11:51:38,088 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6120 [2019-12-18 11:51:38,088 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 11:51:39,529 INFO L206 etLargeBlockEncoding]: Checked pairs total: 13093 [2019-12-18 11:51:39,529 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-18 11:51:39,530 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 52 transitions [2019-12-18 11:54:48,051 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 270604 states. [2019-12-18 11:54:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 270604 states. [2019-12-18 11:54:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 11:54:48,051 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 11:54:48,051 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 11:54:48,052 INFO L410 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]=== [2019-12-18 11:54:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 11:54:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash 604056706, now seen corresponding path program 1 times [2019-12-18 11:54:48,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 11:54:48,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699503310] [2019-12-18 11:54:48,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 11:54:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 11:54:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 11:54:48,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699503310] [2019-12-18 11:54:48,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 11:54:48,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 11:54:48,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715799950] [2019-12-18 11:54:48,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 11:54:48,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 11:54:48,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 11:54:48,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 11:54:48,104 INFO L87 Difference]: Start difference. First operand 270604 states. Second operand 5 states. [2019-12-18 11:54:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 11:54:58,744 INFO L93 Difference]: Finished difference Result 283913 states and 1878243 transitions. [2019-12-18 11:54:58,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 11:54:58,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 11:54:58,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2019-12-18 11:55:01,371 INFO L225 Difference]: With dead ends: 283913 [2019-12-18 11:55:01,371 INFO L226 Difference]: Without dead ends: 283913 [2019-12-18 11:55:01,372 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown