/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:16:40,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:16:40,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:16:40,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:16:40,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:16:40,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:16:40,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:16:40,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:16:40,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:16:40,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:16:40,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:16:40,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:16:40,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:16:40,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:16:40,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:16:40,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:16:40,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:16:40,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:16:40,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:16:40,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:16:40,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:16:40,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:16:40,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:16:40,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:16:40,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:16:40,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:16:40,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:16:40,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:16:40,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:16:40,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:16:40,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:16:40,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:16:40,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:16:40,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:16:40,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:16:40,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:16:40,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:16:40,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:16:40,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:16:40,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:16:40,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:16:40,540 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:16:40,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:16:40,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:16:40,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:16:40,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:16:40,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:16:40,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:16:40,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:16:40,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:16:40,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:16:40,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:16:40,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:16:40,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:16:40,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:16:40,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:16:40,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:16:40,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:16:40,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:16:40,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:16:40,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:16:40,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:16:40,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:16:40,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:16:40,544 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:16:40,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:16:40,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:16:40,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:16:40,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:16:40,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:16:40,886 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:16:40,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-10-05 23:16:40,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/986d686c9/81b2ccb8a3624570bbd7b3110f05083b/FLAGbfd74a468 [2020-10-05 23:16:41,507 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:16:41,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-10-05 23:16:41,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/986d686c9/81b2ccb8a3624570bbd7b3110f05083b/FLAGbfd74a468 [2020-10-05 23:16:41,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/986d686c9/81b2ccb8a3624570bbd7b3110f05083b [2020-10-05 23:16:41,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:16:41,807 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:16:41,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:16:41,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:16:41,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:16:41,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:16:41" (1/1) ... [2020-10-05 23:16:41,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f5ca12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:41, skipping insertion in model container [2020-10-05 23:16:41,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:16:41" (1/1) ... [2020-10-05 23:16:41,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:16:41,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:16:42,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:16:42,313 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:16:42,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:16:42,432 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:16:42,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42 WrapperNode [2020-10-05 23:16:42,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:16:42,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:16:42,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:16:42,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:16:42,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:16:42,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:16:42,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:16:42,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:16:42,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... [2020-10-05 23:16:42,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:16:42,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:16:42,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:16:42,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:16:42,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:16:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-05 23:16:42,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-05 23:16:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:16:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:16:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:16:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:16:42,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:16:42,581 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:16:42,967 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:16:42,968 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-05 23:16:42,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:16:42 BoogieIcfgContainer [2020-10-05 23:16:42,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:16:42,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:16:42,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:16:42,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:16:42,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:16:41" (1/3) ... [2020-10-05 23:16:42,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af6c846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:16:42, skipping insertion in model container [2020-10-05 23:16:42,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:16:42" (2/3) ... [2020-10-05 23:16:42,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af6c846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:16:42, skipping insertion in model container [2020-10-05 23:16:42,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:16:42" (3/3) ... [2020-10-05 23:16:42,980 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2020-10-05 23:16:42,991 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:16:42,991 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:16:42,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:16:43,000 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:16:43,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,025 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,030 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:43,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 23:16:43,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:16:43,067 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:16:43,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:16:43,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:16:43,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:16:43,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:16:43,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:16:43,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:16:43,081 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 32 transitions, 69 flow [2020-10-05 23:16:43,084 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-10-05 23:16:43,118 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-10-05 23:16:43,118 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:16:43,123 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-10-05 23:16:43,125 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-10-05 23:16:43,138 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-10-05 23:16:43,139 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:16:43,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-10-05 23:16:43,141 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 260 [2020-10-05 23:16:43,142 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:16:43,954 INFO L206 etLargeBlockEncoding]: Checked pairs total: 179 [2020-10-05 23:16:43,954 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-10-05 23:16:43,958 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2020-10-05 23:16:43,968 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2020-10-05 23:16:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-05 23:16:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-05 23:16:43,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:43,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-05 23:16:43,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash 168321027, now seen corresponding path program 1 times [2020-10-05 23:16:43,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:43,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983891598] [2020-10-05 23:16:43,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:44,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983891598] [2020-10-05 23:16:44,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:44,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:16:44,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840962618] [2020-10-05 23:16:44,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:16:44,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:16:44,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:16:44,291 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-05 23:16:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:44,337 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-10-05 23:16:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:16:44,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-05 23:16:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:44,352 INFO L225 Difference]: With dead ends: 23 [2020-10-05 23:16:44,352 INFO L226 Difference]: Without dead ends: 23 [2020-10-05 23:16:44,354 INFO L675 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 [2020-10-05 23:16:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-05 23:16:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-05 23:16:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-05 23:16:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-10-05 23:16:44,401 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2020-10-05 23:16:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:44,402 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-10-05 23:16:44,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:16:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-10-05 23:16:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:16:44,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:44,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-05 23:16:44,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:16:44,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash 922984961, now seen corresponding path program 1 times [2020-10-05 23:16:44,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:44,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131854604] [2020-10-05 23:16:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:44,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131854604] [2020-10-05 23:16:44,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:44,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:16:44,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232563388] [2020-10-05 23:16:44,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:16:44,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:44,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:16:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:16:44,576 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2020-10-05 23:16:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:44,600 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2020-10-05 23:16:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:16:44,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-05 23:16:44,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:44,604 INFO L225 Difference]: With dead ends: 19 [2020-10-05 23:16:44,604 INFO L226 Difference]: Without dead ends: 19 [2020-10-05 23:16:44,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:16:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-05 23:16:44,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2020-10-05 23:16:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-05 23:16:44,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2020-10-05 23:16:44,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2020-10-05 23:16:44,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:44,618 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2020-10-05 23:16:44,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:16:44,618 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2020-10-05 23:16:44,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:16:44,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:44,619 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-05 23:16:44,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:16:44,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:44,620 INFO L82 PathProgramCache]: Analyzing trace with hash 922916027, now seen corresponding path program 1 times [2020-10-05 23:16:44,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:44,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612331970] [2020-10-05 23:16:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:16:44,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:16:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:16:44,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:16:44,697 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:16:44,697 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:16:44,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:16:44,699 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:16:44,699 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-05 23:16:44,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,714 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,714 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,716 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,716 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,720 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,720 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:44,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 23:16:44,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:16:44,724 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:16:44,724 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:16:44,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:16:44,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:16:44,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:16:44,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:16:44,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:16:44,727 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 46 transitions, 104 flow [2020-10-05 23:16:44,728 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-10-05 23:16:44,756 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-10-05 23:16:44,756 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-05 23:16:44,759 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-10-05 23:16:44,761 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-10-05 23:16:44,782 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-10-05 23:16:44,782 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-05 23:16:44,784 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-10-05 23:16:44,786 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 884 [2020-10-05 23:16:44,786 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:16:45,354 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1683 [2020-10-05 23:16:45,354 INFO L214 etLargeBlockEncoding]: Total number of compositions: 29 [2020-10-05 23:16:45,354 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 23 transitions, 58 flow [2020-10-05 23:16:45,368 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 277 states. [2020-10-05 23:16:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states. [2020-10-05 23:16:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 23:16:45,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:45,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:45,370 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:16:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:45,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1178921566, now seen corresponding path program 1 times [2020-10-05 23:16:45,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:45,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660924048] [2020-10-05 23:16:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:45,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660924048] [2020-10-05 23:16:45,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:45,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:45,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122254998] [2020-10-05 23:16:45,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:16:45,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:45,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:16:45,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:16:45,473 INFO L87 Difference]: Start difference. First operand 277 states. Second operand 5 states. [2020-10-05 23:16:45,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:45,544 INFO L93 Difference]: Finished difference Result 318 states and 849 transitions. [2020-10-05 23:16:45,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:16:45,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-05 23:16:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:45,553 INFO L225 Difference]: With dead ends: 318 [2020-10-05 23:16:45,553 INFO L226 Difference]: Without dead ends: 318 [2020-10-05 23:16:45,554 INFO L675 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 [2020-10-05 23:16:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-05 23:16:45,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 266. [2020-10-05 23:16:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-05 23:16:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 710 transitions. [2020-10-05 23:16:45,595 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 710 transitions. Word has length 7 [2020-10-05 23:16:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:45,595 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 710 transitions. [2020-10-05 23:16:45,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:16:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 710 transitions. [2020-10-05 23:16:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:16:45,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:45,597 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-05 23:16:45,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:16:45,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:16:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:45,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1370674461, now seen corresponding path program 1 times [2020-10-05 23:16:45,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:45,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828357086] [2020-10-05 23:16:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:16:45,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:16:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:16:45,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:16:45,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:16:45,620 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:16:45,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:16:45,621 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:16:45,622 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-05 23:16:45,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,635 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,641 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,643 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,653 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,653 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,656 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,656 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,657 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,657 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:45,659 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-05 23:16:45,659 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:16:45,659 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:16:45,659 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:16:45,659 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:16:45,660 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:16:45,660 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:16:45,660 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:16:45,660 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:16:45,661 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 141 flow [2020-10-05 23:16:45,662 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-10-05 23:16:45,686 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-10-05 23:16:45,686 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-05 23:16:45,687 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-05 23:16:45,689 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-10-05 23:16:45,702 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-10-05 23:16:45,702 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-05 23:16:45,703 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-05 23:16:45,705 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1872 [2020-10-05 23:16:45,706 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:16:46,391 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3727 [2020-10-05 23:16:46,392 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2020-10-05 23:16:46,392 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 77 flow [2020-10-05 23:16:46,466 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1456 states. [2020-10-05 23:16:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states. [2020-10-05 23:16:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 23:16:46,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:46,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:46,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:16:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1539237464, now seen corresponding path program 1 times [2020-10-05 23:16:46,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:46,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310089822] [2020-10-05 23:16:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:46,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310089822] [2020-10-05 23:16:46,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:46,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:46,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258936741] [2020-10-05 23:16:46,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:16:46,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:46,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:16:46,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:16:46,520 INFO L87 Difference]: Start difference. First operand 1456 states. Second operand 5 states. [2020-10-05 23:16:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:46,676 INFO L93 Difference]: Finished difference Result 1766 states and 6426 transitions. [2020-10-05 23:16:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:16:46,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-05 23:16:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:46,706 INFO L225 Difference]: With dead ends: 1766 [2020-10-05 23:16:46,706 INFO L226 Difference]: Without dead ends: 1766 [2020-10-05 23:16:46,707 INFO L675 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 [2020-10-05 23:16:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2020-10-05 23:16:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1375. [2020-10-05 23:16:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-10-05 23:16:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 5020 transitions. [2020-10-05 23:16:46,808 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 5020 transitions. Word has length 7 [2020-10-05 23:16:46,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:46,808 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 5020 transitions. [2020-10-05 23:16:46,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:16:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 5020 transitions. [2020-10-05 23:16:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:16:46,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:46,809 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:46,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:16:46,810 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:16:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:46,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1738474935, now seen corresponding path program 1 times [2020-10-05 23:16:46,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:46,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852005915] [2020-10-05 23:16:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:46,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852005915] [2020-10-05 23:16:46,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:46,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:46,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589435957] [2020-10-05 23:16:46,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:16:46,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:46,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:16:46,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:16:46,868 INFO L87 Difference]: Start difference. First operand 1375 states and 5020 transitions. Second operand 4 states. [2020-10-05 23:16:47,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:47,007 INFO L93 Difference]: Finished difference Result 1759 states and 6445 transitions. [2020-10-05 23:16:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:16:47,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-05 23:16:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:47,023 INFO L225 Difference]: With dead ends: 1759 [2020-10-05 23:16:47,023 INFO L226 Difference]: Without dead ends: 1759 [2020-10-05 23:16:47,023 INFO L675 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 [2020-10-05 23:16:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2020-10-05 23:16:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1457. [2020-10-05 23:16:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-05 23:16:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 5350 transitions. [2020-10-05 23:16:47,127 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 5350 transitions. Word has length 9 [2020-10-05 23:16:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:47,128 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 5350 transitions. [2020-10-05 23:16:47,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:16:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 5350 transitions. [2020-10-05 23:16:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:16:47,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:47,129 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:47,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:16:47,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:16:47,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1957327118, now seen corresponding path program 1 times [2020-10-05 23:16:47,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:47,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941423063] [2020-10-05 23:16:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:16:47,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941423063] [2020-10-05 23:16:47,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:47,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:47,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965853198] [2020-10-05 23:16:47,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:16:47,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:47,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:16:47,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:16:47,183 INFO L87 Difference]: Start difference. First operand 1457 states and 5350 transitions. Second operand 5 states. [2020-10-05 23:16:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:47,267 INFO L93 Difference]: Finished difference Result 1901 states and 6945 transitions. [2020-10-05 23:16:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:16:47,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-05 23:16:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:47,286 INFO L225 Difference]: With dead ends: 1901 [2020-10-05 23:16:47,286 INFO L226 Difference]: Without dead ends: 1901 [2020-10-05 23:16:47,287 INFO L675 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 [2020-10-05 23:16:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2020-10-05 23:16:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1620. [2020-10-05 23:16:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2020-10-05 23:16:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 5934 transitions. [2020-10-05 23:16:47,361 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 5934 transitions. Word has length 10 [2020-10-05 23:16:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:47,362 INFO L479 AbstractCegarLoop]: Abstraction has 1620 states and 5934 transitions. [2020-10-05 23:16:47,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:16:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 5934 transitions. [2020-10-05 23:16:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:16:47,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:47,364 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-05 23:16:47,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:16:47,365 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:16:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:47,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1041421678, now seen corresponding path program 1 times [2020-10-05 23:16:47,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:47,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252077262] [2020-10-05 23:16:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:16:47,375 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:16:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:16:47,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:16:47,388 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:16:47,388 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:16:47,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:16:47,389 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:16:47,389 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-05 23:16:47,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,405 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,405 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,413 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:47,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-05 23:16:47,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:16:47,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:16:47,420 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:16:47,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:16:47,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:16:47,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:16:47,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:16:47,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:16:47,422 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 74 transitions, 180 flow [2020-10-05 23:16:47,422 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-10-05 23:16:47,436 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-10-05 23:16:47,437 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-05 23:16:47,438 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 310 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-10-05 23:16:47,443 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-10-05 23:16:47,456 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-10-05 23:16:47,456 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-05 23:16:47,458 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 310 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-10-05 23:16:47,462 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3224 [2020-10-05 23:16:47,462 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:16:48,271 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6028 [2020-10-05 23:16:48,271 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-10-05 23:16:48,272 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 37 transitions, 106 flow [2020-10-05 23:16:49,116 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 10192 states. [2020-10-05 23:16:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10192 states. [2020-10-05 23:16:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 23:16:49,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:49,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:49,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:49,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:49,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1561663564, now seen corresponding path program 1 times [2020-10-05 23:16:49,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:49,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158723876] [2020-10-05 23:16:49,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:49,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158723876] [2020-10-05 23:16:49,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:49,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:49,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151313932] [2020-10-05 23:16:49,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:16:49,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:49,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:16:49,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:16:49,173 INFO L87 Difference]: Start difference. First operand 10192 states. Second operand 5 states. [2020-10-05 23:16:49,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:49,397 INFO L93 Difference]: Finished difference Result 11534 states and 53378 transitions. [2020-10-05 23:16:49,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:16:49,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-05 23:16:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:49,498 INFO L225 Difference]: With dead ends: 11534 [2020-10-05 23:16:49,499 INFO L226 Difference]: Without dead ends: 11534 [2020-10-05 23:16:49,499 INFO L675 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 [2020-10-05 23:16:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11534 states. [2020-10-05 23:16:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11534 to 9067. [2020-10-05 23:16:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9067 states. [2020-10-05 23:16:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9067 states to 9067 states and 42125 transitions. [2020-10-05 23:16:50,091 INFO L78 Accepts]: Start accepts. Automaton has 9067 states and 42125 transitions. Word has length 7 [2020-10-05 23:16:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:50,092 INFO L479 AbstractCegarLoop]: Abstraction has 9067 states and 42125 transitions. [2020-10-05 23:16:50,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:16:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9067 states and 42125 transitions. [2020-10-05 23:16:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:16:50,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:50,093 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:50,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 23:16:50,093 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:50,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1815072708, now seen corresponding path program 1 times [2020-10-05 23:16:50,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:50,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766181991] [2020-10-05 23:16:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:50,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766181991] [2020-10-05 23:16:50,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:50,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:50,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339237900] [2020-10-05 23:16:50,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:16:50,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:50,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:16:50,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:16:50,144 INFO L87 Difference]: Start difference. First operand 9067 states and 42125 transitions. Second operand 4 states. [2020-10-05 23:16:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:50,943 INFO L93 Difference]: Finished difference Result 12520 states and 58238 transitions. [2020-10-05 23:16:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:16:50,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-05 23:16:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:51,017 INFO L225 Difference]: With dead ends: 12520 [2020-10-05 23:16:51,017 INFO L226 Difference]: Without dead ends: 12520 [2020-10-05 23:16:51,018 INFO L675 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 [2020-10-05 23:16:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12520 states. [2020-10-05 23:16:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12520 to 10682. [2020-10-05 23:16:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10682 states. [2020-10-05 23:16:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10682 states to 10682 states and 49749 transitions. [2020-10-05 23:16:51,621 INFO L78 Accepts]: Start accepts. Automaton has 10682 states and 49749 transitions. Word has length 9 [2020-10-05 23:16:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:51,621 INFO L479 AbstractCegarLoop]: Abstraction has 10682 states and 49749 transitions. [2020-10-05 23:16:51,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:16:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 10682 states and 49749 transitions. [2020-10-05 23:16:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:16:51,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:51,622 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:51,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 23:16:51,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash 577393655, now seen corresponding path program 1 times [2020-10-05 23:16:51,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:51,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584562856] [2020-10-05 23:16:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:16:51,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584562856] [2020-10-05 23:16:51,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:51,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:51,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314471475] [2020-10-05 23:16:51,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:16:51,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:51,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:16:51,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:16:51,679 INFO L87 Difference]: Start difference. First operand 10682 states and 49749 transitions. Second operand 5 states. [2020-10-05 23:16:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:51,857 INFO L93 Difference]: Finished difference Result 13403 states and 62165 transitions. [2020-10-05 23:16:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:16:51,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-05 23:16:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:51,923 INFO L225 Difference]: With dead ends: 13403 [2020-10-05 23:16:51,923 INFO L226 Difference]: Without dead ends: 13403 [2020-10-05 23:16:51,924 INFO L675 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 [2020-10-05 23:16:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13403 states. [2020-10-05 23:16:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13403 to 11379. [2020-10-05 23:16:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11379 states. [2020-10-05 23:16:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11379 states to 11379 states and 52902 transitions. [2020-10-05 23:16:52,589 INFO L78 Accepts]: Start accepts. Automaton has 11379 states and 52902 transitions. Word has length 10 [2020-10-05 23:16:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:52,590 INFO L479 AbstractCegarLoop]: Abstraction has 11379 states and 52902 transitions. [2020-10-05 23:16:52,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:16:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 11379 states and 52902 transitions. [2020-10-05 23:16:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:16:52,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:52,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:52,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-05 23:16:52,592 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash 824499625, now seen corresponding path program 1 times [2020-10-05 23:16:52,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:52,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757615669] [2020-10-05 23:16:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:16:52,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757615669] [2020-10-05 23:16:52,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:52,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:52,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599299753] [2020-10-05 23:16:52,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:16:52,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:52,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:16:52,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:16:52,648 INFO L87 Difference]: Start difference. First operand 11379 states and 52902 transitions. Second operand 4 states. [2020-10-05 23:16:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:52,877 INFO L93 Difference]: Finished difference Result 14883 states and 69291 transitions. [2020-10-05 23:16:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:16:52,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-05 23:16:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:52,943 INFO L225 Difference]: With dead ends: 14883 [2020-10-05 23:16:52,944 INFO L226 Difference]: Without dead ends: 14883 [2020-10-05 23:16:52,945 INFO L675 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 [2020-10-05 23:16:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14883 states. [2020-10-05 23:16:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14883 to 13161. [2020-10-05 23:16:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13161 states. [2020-10-05 23:16:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13161 states to 13161 states and 61372 transitions. [2020-10-05 23:16:54,322 INFO L78 Accepts]: Start accepts. Automaton has 13161 states and 61372 transitions. Word has length 12 [2020-10-05 23:16:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:54,323 INFO L479 AbstractCegarLoop]: Abstraction has 13161 states and 61372 transitions. [2020-10-05 23:16:54,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:16:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 13161 states and 61372 transitions. [2020-10-05 23:16:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:16:54,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:54,324 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:54,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-05 23:16:54,324 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:54,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:54,324 INFO L82 PathProgramCache]: Analyzing trace with hash -862865239, now seen corresponding path program 1 times [2020-10-05 23:16:54,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:54,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754870335] [2020-10-05 23:16:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:54,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754870335] [2020-10-05 23:16:54,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161046423] [2020-10-05 23:16:54,384 INFO L95 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 [2020-10-05 23:16:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:54,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:16:54,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:16:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:16:54,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:16:54,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-05 23:16:54,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981500246] [2020-10-05 23:16:54,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:16:54,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:54,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:16:54,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:16:54,518 INFO L87 Difference]: Start difference. First operand 13161 states and 61372 transitions. Second operand 6 states. [2020-10-05 23:16:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:54,635 INFO L93 Difference]: Finished difference Result 2267 states and 8210 transitions. [2020-10-05 23:16:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:16:54,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-05 23:16:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:54,644 INFO L225 Difference]: With dead ends: 2267 [2020-10-05 23:16:54,645 INFO L226 Difference]: Without dead ends: 2267 [2020-10-05 23:16:54,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:16:54,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2020-10-05 23:16:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1856. [2020-10-05 23:16:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1856 states. [2020-10-05 23:16:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 6612 transitions. [2020-10-05 23:16:54,706 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 6612 transitions. Word has length 13 [2020-10-05 23:16:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:54,707 INFO L479 AbstractCegarLoop]: Abstraction has 1856 states and 6612 transitions. [2020-10-05 23:16:54,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:16:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 6612 transitions. [2020-10-05 23:16:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:16:54,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:54,708 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:54,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-05 23:16:54,924 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:54,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:54,924 INFO L82 PathProgramCache]: Analyzing trace with hash 274936257, now seen corresponding path program 1 times [2020-10-05 23:16:54,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:54,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100092261] [2020-10-05 23:16:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-05 23:16:54,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100092261] [2020-10-05 23:16:54,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:54,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:54,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759824168] [2020-10-05 23:16:54,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:16:54,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:16:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:16:54,970 INFO L87 Difference]: Start difference. First operand 1856 states and 6612 transitions. Second operand 5 states. [2020-10-05 23:16:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:55,045 INFO L93 Difference]: Finished difference Result 3101 states and 11085 transitions. [2020-10-05 23:16:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:16:55,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-05 23:16:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:55,205 INFO L225 Difference]: With dead ends: 3101 [2020-10-05 23:16:55,206 INFO L226 Difference]: Without dead ends: 3101 [2020-10-05 23:16:55,206 INFO L675 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 [2020-10-05 23:16:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2020-10-05 23:16:55,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2126. [2020-10-05 23:16:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2126 states. [2020-10-05 23:16:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 7602 transitions. [2020-10-05 23:16:55,276 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 7602 transitions. Word has length 13 [2020-10-05 23:16:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:55,276 INFO L479 AbstractCegarLoop]: Abstraction has 2126 states and 7602 transitions. [2020-10-05 23:16:55,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:16:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 7602 transitions. [2020-10-05 23:16:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:16:55,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:55,278 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:55,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-05 23:16:55,278 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2074233969, now seen corresponding path program 1 times [2020-10-05 23:16:55,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:55,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230100555] [2020-10-05 23:16:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:16:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-05 23:16:55,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230100555] [2020-10-05 23:16:55,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:16:55,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:16:55,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686942099] [2020-10-05 23:16:55,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:16:55,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:16:55,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:16:55,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:16:55,378 INFO L87 Difference]: Start difference. First operand 2126 states and 7602 transitions. Second operand 4 states. [2020-10-05 23:16:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:16:55,476 INFO L93 Difference]: Finished difference Result 1856 states and 6612 transitions. [2020-10-05 23:16:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:16:55,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-05 23:16:55,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:16:55,483 INFO L225 Difference]: With dead ends: 1856 [2020-10-05 23:16:55,483 INFO L226 Difference]: Without dead ends: 1856 [2020-10-05 23:16:55,484 INFO L675 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 [2020-10-05 23:16:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2020-10-05 23:16:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1586. [2020-10-05 23:16:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-10-05 23:16:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 5622 transitions. [2020-10-05 23:16:55,541 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 5622 transitions. Word has length 15 [2020-10-05 23:16:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:16:55,541 INFO L479 AbstractCegarLoop]: Abstraction has 1586 states and 5622 transitions. [2020-10-05 23:16:55,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:16:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 5622 transitions. [2020-10-05 23:16:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:16:55,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:16:55,543 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-05 23:16:55,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-05 23:16:55,543 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:16:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:16:55,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1295544518, now seen corresponding path program 1 times [2020-10-05 23:16:55,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:16:55,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661597903] [2020-10-05 23:16:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:16:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:16:55,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:16:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:16:55,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:16:55,583 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:16:55,583 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:16:55,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-05 23:16:55,584 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:16:55,584 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-05 23:16:55,596 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,597 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,597 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,610 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,610 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,613 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,613 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:16:55,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-05 23:16:55,623 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:16:55,623 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:16:55,623 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:16:55,623 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:16:55,623 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:16:55,624 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:16:55,624 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:16:55,624 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:16:55,626 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 88 transitions, 221 flow [2020-10-05 23:16:55,626 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-10-05 23:16:55,645 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-10-05 23:16:55,645 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-05 23:16:55,648 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 397 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-10-05 23:16:55,654 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-10-05 23:16:55,674 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-10-05 23:16:55,675 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-05 23:16:55,677 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 397 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-10-05 23:16:55,683 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4940 [2020-10-05 23:16:55,683 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:16:56,613 INFO L206 etLargeBlockEncoding]: Checked pairs total: 12058 [2020-10-05 23:16:56,614 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-10-05 23:16:56,614 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 48 transitions, 141 flow [2020-10-05 23:17:22,515 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 81638 states. [2020-10-05 23:17:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 81638 states. [2020-10-05 23:17:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 23:17:22,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:22,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:22,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash -664909556, now seen corresponding path program 1 times [2020-10-05 23:17:22,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:22,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989660333] [2020-10-05 23:17:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:22,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989660333] [2020-10-05 23:17:22,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:22,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:22,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880095057] [2020-10-05 23:17:22,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:17:22,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:22,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:17:22,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:17:22,585 INFO L87 Difference]: Start difference. First operand 81638 states. Second operand 5 states. [2020-10-05 23:17:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:26,043 INFO L93 Difference]: Finished difference Result 82196 states and 463471 transitions. [2020-10-05 23:17:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:17:26,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-05 23:17:26,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:26,395 INFO L225 Difference]: With dead ends: 82196 [2020-10-05 23:17:26,395 INFO L226 Difference]: Without dead ends: 82196 [2020-10-05 23:17:26,396 INFO L675 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 [2020-10-05 23:17:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82196 states. [2020-10-05 23:17:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82196 to 69058. [2020-10-05 23:17:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69058 states. [2020-10-05 23:17:34,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69058 states to 69058 states and 390504 transitions. [2020-10-05 23:17:34,527 INFO L78 Accepts]: Start accepts. Automaton has 69058 states and 390504 transitions. Word has length 7 [2020-10-05 23:17:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:34,527 INFO L479 AbstractCegarLoop]: Abstraction has 69058 states and 390504 transitions. [2020-10-05 23:17:34,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:17:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 69058 states and 390504 transitions. [2020-10-05 23:17:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:17:34,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:34,528 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:34,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-05 23:17:34,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:34,529 INFO L82 PathProgramCache]: Analyzing trace with hash 972030566, now seen corresponding path program 1 times [2020-10-05 23:17:34,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:34,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810184763] [2020-10-05 23:17:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:34,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810184763] [2020-10-05 23:17:34,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:34,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:34,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457262076] [2020-10-05 23:17:34,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:17:34,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:34,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:17:34,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:17:34,574 INFO L87 Difference]: Start difference. First operand 69058 states and 390504 transitions. Second operand 4 states. [2020-10-05 23:17:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:35,547 INFO L93 Difference]: Finished difference Result 94621 states and 535383 transitions. [2020-10-05 23:17:35,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:17:35,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-05 23:17:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:35,940 INFO L225 Difference]: With dead ends: 94621 [2020-10-05 23:17:35,941 INFO L226 Difference]: Without dead ends: 94621 [2020-10-05 23:17:35,943 INFO L675 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 [2020-10-05 23:17:42,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94621 states. [2020-10-05 23:17:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94621 to 83246. [2020-10-05 23:17:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83246 states. [2020-10-05 23:17:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83246 states to 83246 states and 471320 transitions. [2020-10-05 23:17:44,725 INFO L78 Accepts]: Start accepts. Automaton has 83246 states and 471320 transitions. Word has length 9 [2020-10-05 23:17:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:44,725 INFO L479 AbstractCegarLoop]: Abstraction has 83246 states and 471320 transitions. [2020-10-05 23:17:44,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:17:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 83246 states and 471320 transitions. [2020-10-05 23:17:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:17:44,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:44,726 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:44,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-05 23:17:44,726 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:44,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:44,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2020420234, now seen corresponding path program 1 times [2020-10-05 23:17:44,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:44,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945029607] [2020-10-05 23:17:44,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:17:44,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945029607] [2020-10-05 23:17:44,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:44,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:44,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158008134] [2020-10-05 23:17:44,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:17:44,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:44,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:17:44,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:17:44,782 INFO L87 Difference]: Start difference. First operand 83246 states and 471320 transitions. Second operand 5 states. [2020-10-05 23:17:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:50,569 INFO L93 Difference]: Finished difference Result 98498 states and 556042 transitions. [2020-10-05 23:17:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:17:50,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-05 23:17:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:51,014 INFO L225 Difference]: With dead ends: 98498 [2020-10-05 23:17:51,015 INFO L226 Difference]: Without dead ends: 98498 [2020-10-05 23:17:51,015 INFO L675 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 [2020-10-05 23:17:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98498 states. [2020-10-05 23:17:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98498 to 86145. [2020-10-05 23:17:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86145 states. [2020-10-05 23:17:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86145 states to 86145 states and 487242 transitions. [2020-10-05 23:17:55,453 INFO L78 Accepts]: Start accepts. Automaton has 86145 states and 487242 transitions. Word has length 10 [2020-10-05 23:17:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:55,453 INFO L479 AbstractCegarLoop]: Abstraction has 86145 states and 487242 transitions. [2020-10-05 23:17:55,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:17:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 86145 states and 487242 transitions. [2020-10-05 23:17:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:17:55,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:55,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:55,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-05 23:17:55,455 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash 298657665, now seen corresponding path program 1 times [2020-10-05 23:17:55,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:55,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810129537] [2020-10-05 23:17:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:17:55,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810129537] [2020-10-05 23:17:55,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:55,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:55,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200603699] [2020-10-05 23:17:55,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:17:55,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:55,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:17:55,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:17:55,532 INFO L87 Difference]: Start difference. First operand 86145 states and 487242 transitions. Second operand 4 states. [2020-10-05 23:17:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:57,795 INFO L93 Difference]: Finished difference Result 123764 states and 700267 transitions. [2020-10-05 23:17:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:17:57,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-05 23:17:57,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:58,333 INFO L225 Difference]: With dead ends: 123764 [2020-10-05 23:17:58,333 INFO L226 Difference]: Without dead ends: 123764 [2020-10-05 23:17:58,334 INFO L675 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 [2020-10-05 23:18:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123764 states. [2020-10-05 23:18:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123764 to 108992. [2020-10-05 23:18:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108992 states. [2020-10-05 23:18:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108992 states to 108992 states and 617126 transitions. [2020-10-05 23:18:11,211 INFO L78 Accepts]: Start accepts. Automaton has 108992 states and 617126 transitions. Word has length 12 [2020-10-05 23:18:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:18:11,212 INFO L479 AbstractCegarLoop]: Abstraction has 108992 states and 617126 transitions. [2020-10-05 23:18:11,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:18:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 108992 states and 617126 transitions. [2020-10-05 23:18:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:18:11,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:18:11,213 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:18:11,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-05 23:18:11,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:18:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:18:11,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1372403915, now seen corresponding path program 1 times [2020-10-05 23:18:11,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:18:11,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87925378] [2020-10-05 23:18:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:18:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:18:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-05 23:18:11,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87925378] [2020-10-05 23:18:11,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:18:11,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:18:11,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601128625] [2020-10-05 23:18:11,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:18:11,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:18:11,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:18:11,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:18:11,274 INFO L87 Difference]: Start difference. First operand 108992 states and 617126 transitions. Second operand 5 states. [2020-10-05 23:18:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:18:18,205 INFO L93 Difference]: Finished difference Result 121705 states and 687683 transitions. [2020-10-05 23:18:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:18:18,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-05 23:18:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:18:18,759 INFO L225 Difference]: With dead ends: 121705 [2020-10-05 23:18:18,759 INFO L226 Difference]: Without dead ends: 121705 [2020-10-05 23:18:18,760 INFO L675 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 [2020-10-05 23:18:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121705 states. [2020-10-05 23:18:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121705 to 111117. [2020-10-05 23:18:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111117 states. [2020-10-05 23:18:24,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111117 states to 111117 states and 628451 transitions. [2020-10-05 23:18:24,390 INFO L78 Accepts]: Start accepts. Automaton has 111117 states and 628451 transitions. Word has length 13 [2020-10-05 23:18:24,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:18:24,390 INFO L479 AbstractCegarLoop]: Abstraction has 111117 states and 628451 transitions. [2020-10-05 23:18:24,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:18:24,391 INFO L276 IsEmpty]: Start isEmpty. Operand 111117 states and 628451 transitions. [2020-10-05 23:18:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:18:24,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:18:24,392 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:18:24,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-05 23:18:24,392 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:18:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:18:24,392 INFO L82 PathProgramCache]: Analyzing trace with hash 667954930, now seen corresponding path program 1 times [2020-10-05 23:18:24,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:18:24,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162471282] [2020-10-05 23:18:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:18:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:18:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:18:24,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162471282] [2020-10-05 23:18:24,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:18:24,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:18:24,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293967692] [2020-10-05 23:18:24,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:18:24,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:18:24,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:18:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:18:24,451 INFO L87 Difference]: Start difference. First operand 111117 states and 628451 transitions. Second operand 5 states. [2020-10-05 23:18:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:18:24,626 INFO L93 Difference]: Finished difference Result 10054 states and 42885 transitions. [2020-10-05 23:18:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:18:24,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-05 23:18:24,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:18:24,666 INFO L225 Difference]: With dead ends: 10054 [2020-10-05 23:18:24,666 INFO L226 Difference]: Without dead ends: 10054 [2020-10-05 23:18:24,667 INFO L675 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 [2020-10-05 23:18:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10054 states. [2020-10-05 23:18:26,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10054 to 8563. [2020-10-05 23:18:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-05 23:18:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 36301 transitions. [2020-10-05 23:18:26,105 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 36301 transitions. Word has length 13 [2020-10-05 23:18:26,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:18:26,105 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 36301 transitions. [2020-10-05 23:18:26,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:18:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 36301 transitions. [2020-10-05 23:18:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:18:26,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:18:26,108 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:18:26,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-05 23:18:26,108 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:18:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:18:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash 325204049, now seen corresponding path program 1 times [2020-10-05 23:18:26,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:18:26,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427799696] [2020-10-05 23:18:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:18:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:18:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-05 23:18:26,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427799696] [2020-10-05 23:18:26,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:18:26,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:18:26,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621099354] [2020-10-05 23:18:26,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:18:26,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:18:26,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:18:26,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:18:26,182 INFO L87 Difference]: Start difference. First operand 8563 states and 36301 transitions. Second operand 4 states. [2020-10-05 23:18:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:18:26,314 INFO L93 Difference]: Finished difference Result 7699 states and 32611 transitions. [2020-10-05 23:18:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:18:26,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-05 23:18:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:18:26,335 INFO L225 Difference]: With dead ends: 7699 [2020-10-05 23:18:26,335 INFO L226 Difference]: Without dead ends: 7699 [2020-10-05 23:18:26,335 INFO L675 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 [2020-10-05 23:18:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7699 states. [2020-10-05 23:18:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7699 to 6835. [2020-10-05 23:18:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6835 states. [2020-10-05 23:18:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6835 states to 6835 states and 28921 transitions. [2020-10-05 23:18:26,527 INFO L78 Accepts]: Start accepts. Automaton has 6835 states and 28921 transitions. Word has length 15 [2020-10-05 23:18:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:18:26,527 INFO L479 AbstractCegarLoop]: Abstraction has 6835 states and 28921 transitions. [2020-10-05 23:18:26,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:18:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 6835 states and 28921 transitions. [2020-10-05 23:18:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:18:26,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:18:26,530 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:18:26,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-05 23:18:26,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:18:26,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:18:26,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1000706857, now seen corresponding path program 1 times [2020-10-05 23:18:26,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:18:26,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055742893] [2020-10-05 23:18:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:18:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:18:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-05 23:18:26,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055742893] [2020-10-05 23:18:26,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:18:26,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:18:26,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881137406] [2020-10-05 23:18:26,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:18:26,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:18:26,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:18:26,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:18:26,596 INFO L87 Difference]: Start difference. First operand 6835 states and 28921 transitions. Second operand 5 states. [2020-10-05 23:18:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:18:26,758 INFO L93 Difference]: Finished difference Result 11770 states and 49873 transitions. [2020-10-05 23:18:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:18:26,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-05 23:18:26,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:18:26,787 INFO L225 Difference]: With dead ends: 11770 [2020-10-05 23:18:26,788 INFO L226 Difference]: Without dead ends: 11770 [2020-10-05 23:18:26,788 INFO L675 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 [2020-10-05 23:18:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11770 states. [2020-10-05 23:18:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11770 to 7645. [2020-10-05 23:18:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7645 states. [2020-10-05 23:18:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7645 states to 7645 states and 32431 transitions. [2020-10-05 23:18:27,047 INFO L78 Accepts]: Start accepts. Automaton has 7645 states and 32431 transitions. Word has length 16 [2020-10-05 23:18:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:18:27,047 INFO L479 AbstractCegarLoop]: Abstraction has 7645 states and 32431 transitions. [2020-10-05 23:18:27,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:18:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7645 states and 32431 transitions. [2020-10-05 23:18:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 23:18:27,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:18:27,050 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:18:27,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-05 23:18:27,050 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:18:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:18:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash -82755358, now seen corresponding path program 1 times [2020-10-05 23:18:27,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:18:27,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874167990] [2020-10-05 23:18:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:18:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:18:27,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:18:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:18:27,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:18:27,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:18:27,069 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:18:27,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-05 23:18:27,070 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:18:27,070 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-05 23:18:27,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:18:27,117 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-05 23:18:27,118 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:18:27,118 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:18:27,118 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:18:27,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:18:27,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:18:27,118 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:18:27,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:18:27,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:18:27,120 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 264 flow [2020-10-05 23:18:27,120 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-10-05 23:18:27,140 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-10-05 23:18:27,140 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-05 23:18:27,142 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 468 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-10-05 23:18:27,151 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-10-05 23:18:27,169 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-10-05 23:18:27,169 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-05 23:18:27,171 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 468 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-10-05 23:18:27,181 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 7020 [2020-10-05 23:18:27,181 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:18:28,200 INFO L206 etLargeBlockEncoding]: Checked pairs total: 18871 [2020-10-05 23:18:28,200 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2020-10-05 23:18:28,201 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 58 transitions, 176 flow Received shutdown request... [2020-10-05 23:20:38,365 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 23:20:38,371 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 23:20:38,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:20:38 BasicIcfg [2020-10-05 23:20:38,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:20:38,377 INFO L168 Benchmark]: Toolchain (without parser) took 236567.74 ms. Allocated memory was 140.0 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 101.9 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2020-10-05 23:20:38,378 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:20:38,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.08 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 161.0 MB in the end (delta: -59.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:20:38,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.91 ms. Allocated memory is still 202.9 MB. Free memory was 161.0 MB in the beginning and 158.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:20:38,380 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 157.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:20:38,389 INFO L168 Benchmark]: RCFGBuilder took 465.88 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 136.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:20:38,389 INFO L168 Benchmark]: TraceAbstraction took 235399.50 ms. Allocated memory was 202.9 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 136.4 MB in the beginning and 1.1 GB in the end (delta: -984.7 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2020-10-05 23:20:38,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.08 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 161.0 MB in the end (delta: -59.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.91 ms. Allocated memory is still 202.9 MB. Free memory was 161.0 MB in the beginning and 158.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 157.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.88 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 136.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235399.50 ms. Allocated memory was 202.9 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 136.4 MB in the beginning and 1.1 GB in the end (delta: -984.7 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 32 ProgramPointsBefore, 12 ProgramPointsAfterwards, 32 TransitionsBefore, 10 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 121 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 179 CheckedPairsTotal, 28 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 46 ProgramPointsBefore, 24 ProgramPointsAfterwards, 46 TransitionsBefore, 23 TransitionsAfterwards, 884 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 460 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1683 CheckedPairsTotal, 29 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 60 ProgramPointsBefore, 31 ProgramPointsAfterwards, 60 TransitionsBefore, 28 TransitionsAfterwards, 1872 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 883 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3727 CheckedPairsTotal, 39 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 74 ProgramPointsBefore, 40 ProgramPointsAfterwards, 74 TransitionsBefore, 37 TransitionsAfterwards, 3224 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 1490 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6028 CheckedPairsTotal, 47 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 88 ProgramPointsBefore, 50 ProgramPointsAfterwards, 88 TransitionsBefore, 48 TransitionsAfterwards, 4940 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 2269 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 12058 CheckedPairsTotal, 55 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 102 ProgramPointsBefore, 59 ProgramPointsAfterwards, 102 TransitionsBefore, 58 TransitionsAfterwards, 7020 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 3530 VarBasedMoverChecksPositive, 85 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 18871 CheckedPairsTotal, 66 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 690]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 690). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 59 places, 58 transitions, 176 flow. Already constructed 180893 states. Currently 45178 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 235.1s, OverallIterations: 26, TraceHistogramMax: 6, AutomataDifference: 25.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 162.1s, HoareTripleCheckerStatistics: 1135 SDtfs, 918 SDslu, 1498 SDs, 0 SdLazy, 1560 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111117occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 45.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 79443 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 12976 SizeOfPredicates, 1 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 22 InterpolantComputations, 20 PerfectInterpolantSequences, 70/74 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown