/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:55:07,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:55:07,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:55:07,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:55:07,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:55:07,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:55:07,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:55:07,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:55:07,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:55:07,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:55:07,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:55:07,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:55:07,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:55:07,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:55:07,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:55:07,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:55:07,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:55:07,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:55:07,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:55:07,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:55:07,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:55:07,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:55:07,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:55:07,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:55:08,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 15:55:08,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 15:55:08,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 15:55:08,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 15:55:08,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 15:55:08,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 15:55:08,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:55:08,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:55:08,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:55:08,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:55:08,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:55:08,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:55:08,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:55:08,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:55:08,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:55:08,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:55:08,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:55:08,020 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-McrAutomaton-WP.epf [2020-11-09 15:55:08,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:55:08,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:55:08,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:55:08,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:55:08,090 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:55:08,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:55:08,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:55:08,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:55:08,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:55:08,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:55:08,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:55:08,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:55:08,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:55:08,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:55:08,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:55:08,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:55:08,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:55:08,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:55:08,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:55:08,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:55:08,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:55:08,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:55:08,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:55:08,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:55:08,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:55:08,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:55:08,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:55:08,097 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:55:08,098 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:55:08,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:55:08,099 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:55:08,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:55:08,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:55:08,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:55:08,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:55:08,547 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:55:08,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-11-09 15:55:08,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e039c6c54/713988c5295645d49831831a2f32ca7a/FLAG94b34a89c [2020-11-09 15:55:09,493 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:55:09,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-11-09 15:55:09,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e039c6c54/713988c5295645d49831831a2f32ca7a/FLAG94b34a89c [2020-11-09 15:55:09,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e039c6c54/713988c5295645d49831831a2f32ca7a [2020-11-09 15:55:09,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:55:09,777 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:55:09,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:55:09,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:55:09,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:55:09,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f7258c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09, skipping insertion in model container [2020-11-09 15:55:09,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:55:09,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:55:10,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:55:10,291 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:55:10,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:55:10,442 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:55:10,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10 WrapperNode [2020-11-09 15:55:10,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:55:10,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:55:10,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:55:10,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:55:10,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:55:10,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:55:10,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:55:10,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:55:10,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (1/1) ... [2020-11-09 15:55:10,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:55:10,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:55:10,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:55:10,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:55:10,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (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 [2020-11-09 15:55:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-11-09 15:55:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-09 15:55:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:55:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-11-09 15:55:10,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-11-09 15:55:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:55:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:55:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:55:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:55:10,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:55:10,629 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:55:11,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:55:11,073 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-09 15:55:11,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:55:11 BoogieIcfgContainer [2020-11-09 15:55:11,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:55:11,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:55:11,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:55:11,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:55:11,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:55:09" (1/3) ... [2020-11-09 15:55:11,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2268d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:55:11, skipping insertion in model container [2020-11-09 15:55:11,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:10" (2/3) ... [2020-11-09 15:55:11,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2268d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:55:11, skipping insertion in model container [2020-11-09 15:55:11,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:55:11" (3/3) ... [2020-11-09 15:55:11,086 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2020-11-09 15:55:11,105 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:55:11,105 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:55:11,110 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:55:11,111 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:55:11,144 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,144 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,145 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,145 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,145 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,146 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,146 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,146 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,146 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,147 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,147 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,147 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,148 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,148 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,151 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,151 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,151 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,151 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,152 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:11,162 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-09 15:55:11,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:11,209 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:11,209 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:11,209 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:11,209 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:11,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:11,210 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:11,210 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:11,210 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:11,224 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:11,225 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 80 transitions, 168 flow [2020-11-09 15:55:11,230 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 80 transitions, 168 flow [2020-11-09 15:55:11,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 80 transitions, 168 flow [2020-11-09 15:55:11,296 INFO L129 PetriNetUnfolder]: 14/117 cut-off events. [2020-11-09 15:55:11,297 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-09 15:55:11,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 117 events. 14/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 254 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2020-11-09 15:55:11,304 INFO L116 LiptonReduction]: Number of co-enabled transitions 420 [2020-11-09 15:55:14,175 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-09 15:55:14,403 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-09 15:55:14,898 WARN L194 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 15:55:15,067 WARN L194 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:15,537 WARN L194 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 15:55:15,701 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:16,104 WARN L194 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-11-09 15:55:16,432 WARN L194 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 15:55:16,795 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-11-09 15:55:17,110 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 15:55:17,133 INFO L131 LiptonReduction]: Checked pairs total: 485 [2020-11-09 15:55:17,133 INFO L133 LiptonReduction]: Total number of compositions: 86 [2020-11-09 15:55:17,140 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-11-09 15:55:17,149 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-11-09 15:55:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-09 15:55:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:17,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:17,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:17,159 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:17,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash 9839405, now seen corresponding path program 1 times [2020-11-09 15:55:17,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:17,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409720068] [2020-11-09 15:55:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:55:17,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409720068] [2020-11-09 15:55:17,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:17,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:17,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1650757821] [2020-11-09 15:55:17,399 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:17,402 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:17,416 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:17,416 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:17,422 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:17,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:17,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:17,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:17,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:17,443 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-11-09 15:55:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:17,481 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-09 15:55:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:17,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:17,493 INFO L225 Difference]: With dead ends: 27 [2020-11-09 15:55:17,493 INFO L226 Difference]: Without dead ends: 23 [2020-11-09 15:55:17,495 INFO L677 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 [2020-11-09 15:55:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-09 15:55:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-09 15:55:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-09 15:55:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-11-09 15:55:17,535 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-11-09 15:55:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:17,536 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-11-09 15:55:17,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-11-09 15:55:17,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 15:55:17,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:17,537 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-09 15:55:17,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:55:17,537 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:17,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:17,538 INFO L82 PathProgramCache]: Analyzing trace with hash 854847300, now seen corresponding path program 1 times [2020-11-09 15:55:17,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:17,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448967745] [2020-11-09 15:55:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:17,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:17,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:17,644 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:17,645 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:17,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:55:17,647 WARN L386 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:17,647 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-11-09 15:55:17,656 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,656 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,657 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,657 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,657 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,657 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,657 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,658 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,658 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,658 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,658 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,659 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,659 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,659 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,659 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,660 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,660 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,660 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,660 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,660 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,661 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,661 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,661 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,661 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,662 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,662 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,662 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,662 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,663 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,663 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,663 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,664 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,664 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,667 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,668 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,668 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,668 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,668 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:17,672 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-11-09 15:55:17,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:17,674 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:17,674 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:17,674 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:17,675 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:17,675 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:17,675 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:17,675 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:17,675 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:17,678 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:17,678 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 87 transitions, 192 flow [2020-11-09 15:55:17,679 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 87 transitions, 192 flow [2020-11-09 15:55:17,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 87 transitions, 192 flow [2020-11-09 15:55:17,723 INFO L129 PetriNetUnfolder]: 27/207 cut-off events. [2020-11-09 15:55:17,723 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-11-09 15:55:17,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 207 events. 27/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 559 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-11-09 15:55:17,733 INFO L116 LiptonReduction]: Number of co-enabled transitions 1000 [2020-11-09 15:55:20,456 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 15:55:20,651 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 15:55:21,113 WARN L194 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 15:55:21,290 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:21,660 WARN L194 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 15:55:21,830 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:22,187 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-11-09 15:55:22,463 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 15:55:22,809 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-11-09 15:55:23,129 WARN L194 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 15:55:23,134 INFO L131 LiptonReduction]: Checked pairs total: 2597 [2020-11-09 15:55:23,135 INFO L133 LiptonReduction]: Total number of compositions: 81 [2020-11-09 15:55:23,135 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-11-09 15:55:23,156 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-11-09 15:55:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-11-09 15:55:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:23,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:23,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:23,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash 15288450, now seen corresponding path program 1 times [2020-11-09 15:55:23,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:23,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049325447] [2020-11-09 15:55:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:55:23,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049325447] [2020-11-09 15:55:23,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:23,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:23,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1195013680] [2020-11-09 15:55:23,217 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:23,218 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:23,219 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:23,219 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:23,219 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:23,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:23,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:23,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:23,221 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-11-09 15:55:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:23,265 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-11-09 15:55:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:23,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:23,273 INFO L225 Difference]: With dead ends: 242 [2020-11-09 15:55:23,273 INFO L226 Difference]: Without dead ends: 216 [2020-11-09 15:55:23,274 INFO L677 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 [2020-11-09 15:55:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-09 15:55:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-09 15:55:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-09 15:55:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-11-09 15:55:23,312 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-11-09 15:55:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:23,313 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-11-09 15:55:23,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-11-09 15:55:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:55:23,314 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:23,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:23,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:55:23,314 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:23,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1084470026, now seen corresponding path program 1 times [2020-11-09 15:55:23,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:23,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999217573] [2020-11-09 15:55:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 15:55:23,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999217573] [2020-11-09 15:55:23,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:23,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:55:23,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1569946532] [2020-11-09 15:55:23,385 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:23,386 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:23,387 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:55:23,388 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:23,388 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:23,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:55:23,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:23,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:55:23,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:23,390 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-11-09 15:55:23,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:23,428 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-11-09 15:55:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:55:23,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:55:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:23,432 INFO L225 Difference]: With dead ends: 203 [2020-11-09 15:55:23,432 INFO L226 Difference]: Without dead ends: 203 [2020-11-09 15:55:23,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-09 15:55:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-11-09 15:55:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-11-09 15:55:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-11-09 15:55:23,473 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-11-09 15:55:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:23,474 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-11-09 15:55:23,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:55:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-11-09 15:55:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:55:23,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:23,475 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-11-09 15:55:23,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:55:23,476 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:23,480 INFO L82 PathProgramCache]: Analyzing trace with hash 269674759, now seen corresponding path program 1 times [2020-11-09 15:55:23,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:23,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351995181] [2020-11-09 15:55:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:23,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:23,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:23,590 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:23,590 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:23,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:55:23,591 WARN L386 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:23,593 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-11-09 15:55:23,605 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,606 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,606 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,606 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,606 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,607 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,607 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,607 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,607 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,607 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,608 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,608 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,608 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,608 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,608 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,609 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,609 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,609 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,609 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,609 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,609 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,609 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,610 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,610 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,610 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,610 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,610 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,611 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,611 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,611 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,611 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,611 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,611 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,612 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,612 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,612 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,612 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,612 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,612 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,612 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,613 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,613 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,613 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,615 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,615 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,615 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,616 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,617 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,617 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,618 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,618 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,618 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,619 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,619 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,620 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,620 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,620 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:23,623 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-11-09 15:55:23,624 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:23,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:23,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:23,625 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:23,625 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:23,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:23,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:23,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:23,625 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:23,627 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:23,628 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 94 transitions, 218 flow [2020-11-09 15:55:23,628 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 94 transitions, 218 flow [2020-11-09 15:55:23,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 94 transitions, 218 flow [2020-11-09 15:55:23,706 INFO L129 PetriNetUnfolder]: 53/374 cut-off events. [2020-11-09 15:55:23,709 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-11-09 15:55:23,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 374 events. 53/374 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1316 event pairs, 1 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 215. Up to 16 conditions per place. [2020-11-09 15:55:23,720 INFO L116 LiptonReduction]: Number of co-enabled transitions 1620 [2020-11-09 15:55:25,506 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-11-09 15:55:25,684 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-11-09 15:55:26,628 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-11-09 15:55:27,360 WARN L194 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-09 15:55:27,667 WARN L194 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 15:55:28,026 WARN L194 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 15:55:28,342 WARN L194 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 15:55:28,369 INFO L131 LiptonReduction]: Checked pairs total: 4210 [2020-11-09 15:55:28,369 INFO L133 LiptonReduction]: Total number of compositions: 79 [2020-11-09 15:55:28,370 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-11-09 15:55:28,446 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-11-09 15:55:28,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-11-09 15:55:28,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:28,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:28,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:28,448 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:28,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:28,449 INFO L82 PathProgramCache]: Analyzing trace with hash 20773836, now seen corresponding path program 1 times [2020-11-09 15:55:28,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:28,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540833594] [2020-11-09 15:55:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:55:28,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540833594] [2020-11-09 15:55:28,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:28,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:28,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [998617931] [2020-11-09 15:55:28,531 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:28,532 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:28,533 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:28,533 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:28,534 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:28,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:28,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:28,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:28,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:28,537 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-11-09 15:55:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:28,579 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-11-09 15:55:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:28,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:28,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:28,593 INFO L225 Difference]: With dead ends: 1150 [2020-11-09 15:55:28,593 INFO L226 Difference]: Without dead ends: 1024 [2020-11-09 15:55:28,594 INFO L677 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 [2020-11-09 15:55:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-11-09 15:55:28,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-11-09 15:55:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-11-09 15:55:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-11-09 15:55:28,712 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-11-09 15:55:28,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:28,712 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-11-09 15:55:28,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-11-09 15:55:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:55:28,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:28,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:28,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:55:28,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:28,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1395614296, now seen corresponding path program 1 times [2020-11-09 15:55:28,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:28,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696482968] [2020-11-09 15:55:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 15:55:28,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696482968] [2020-11-09 15:55:28,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:28,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:55:28,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [310228038] [2020-11-09 15:55:28,792 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:28,793 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:28,794 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:55:28,794 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:28,794 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:28,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:55:28,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:28,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:55:28,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:28,797 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-11-09 15:55:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:28,862 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-11-09 15:55:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:55:28,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:55:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:28,872 INFO L225 Difference]: With dead ends: 1015 [2020-11-09 15:55:28,872 INFO L226 Difference]: Without dead ends: 1015 [2020-11-09 15:55:28,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-11-09 15:55:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-11-09 15:55:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-11-09 15:55:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-11-09 15:55:28,909 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-11-09 15:55:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:28,909 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-11-09 15:55:28,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:55:28,909 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-11-09 15:55:28,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:55:28,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:28,920 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-11-09 15:55:28,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:55:28,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:28,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1374284163, now seen corresponding path program 1 times [2020-11-09 15:55:28,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:28,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105903564] [2020-11-09 15:55:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:28,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:28,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:28,971 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:28,971 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:28,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:55:28,972 WARN L386 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:28,972 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-11-09 15:55:28,981 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,981 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,981 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,981 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,982 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,982 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,982 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,982 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,982 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,983 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,983 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,983 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,983 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,983 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,983 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,984 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,984 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,984 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,985 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,985 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,985 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,985 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,985 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,985 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,986 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,986 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,986 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,986 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,986 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,986 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,987 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,987 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,987 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,987 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,987 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,987 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,988 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,988 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,988 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,988 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,988 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,988 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,989 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,989 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,989 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,989 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,989 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,989 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,989 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,990 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,990 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,990 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,990 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,991 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,991 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,991 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,991 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,992 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,993 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,993 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,993 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,993 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,995 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,995 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,995 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,995 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,996 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,997 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,997 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,997 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,997 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:28,998 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:29,002 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-09 15:55:29,002 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:29,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:29,003 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:29,003 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:29,003 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:29,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:29,003 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:29,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:29,004 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:29,005 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:29,005 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 101 transitions, 246 flow [2020-11-09 15:55:29,006 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 101 transitions, 246 flow [2020-11-09 15:55:29,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 101 transitions, 246 flow [2020-11-09 15:55:29,108 INFO L129 PetriNetUnfolder]: 107/697 cut-off events. [2020-11-09 15:55:29,108 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-11-09 15:55:29,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 697 events. 107/697 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3238 event pairs, 6 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 394. Up to 32 conditions per place. [2020-11-09 15:55:29,123 INFO L116 LiptonReduction]: Number of co-enabled transitions 2320 [2020-11-09 15:55:32,108 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-11-09 15:55:32,353 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-11-09 15:55:32,495 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 15:55:32,699 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 15:55:33,032 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-11-09 15:55:33,230 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-11-09 15:55:33,485 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-11-09 15:55:33,838 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 15:55:33,995 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:55:34,288 WARN L194 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-11-09 15:55:34,467 WARN L194 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:34,474 INFO L131 LiptonReduction]: Checked pairs total: 7336 [2020-11-09 15:55:34,474 INFO L133 LiptonReduction]: Total number of compositions: 84 [2020-11-09 15:55:34,475 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-11-09 15:55:34,856 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-11-09 15:55:34,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-11-09 15:55:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:34,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:34,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:34,858 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:34,858 INFO L82 PathProgramCache]: Analyzing trace with hash 26742612, now seen corresponding path program 1 times [2020-11-09 15:55:34,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:34,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490208972] [2020-11-09 15:55:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:55:34,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490208972] [2020-11-09 15:55:34,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:34,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:34,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1852071062] [2020-11-09 15:55:34,911 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:34,912 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:34,912 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:34,912 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:34,913 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:34,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:34,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:34,914 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-11-09 15:55:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:35,024 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-11-09 15:55:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:35,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:35,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:35,073 INFO L225 Difference]: With dead ends: 5482 [2020-11-09 15:55:35,073 INFO L226 Difference]: Without dead ends: 4856 [2020-11-09 15:55:35,075 INFO L677 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 [2020-11-09 15:55:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-11-09 15:55:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-11-09 15:55:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-11-09 15:55:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-11-09 15:55:35,424 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-11-09 15:55:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:35,424 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-11-09 15:55:35,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-11-09 15:55:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:55:35,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:35,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:35,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 15:55:35,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:35,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1049833476, now seen corresponding path program 1 times [2020-11-09 15:55:35,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:35,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050819832] [2020-11-09 15:55:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 15:55:35,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050819832] [2020-11-09 15:55:35,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:35,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:55:35,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1827340529] [2020-11-09 15:55:35,521 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:35,522 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:35,523 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:55:35,523 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:35,523 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:35,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:55:35,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:35,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:55:35,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:35,526 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-11-09 15:55:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:35,617 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-11-09 15:55:35,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:55:35,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:55:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:35,661 INFO L225 Difference]: With dead ends: 4995 [2020-11-09 15:55:35,661 INFO L226 Difference]: Without dead ends: 4995 [2020-11-09 15:55:35,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-11-09 15:55:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-11-09 15:55:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-11-09 15:55:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-11-09 15:55:35,941 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-11-09 15:55:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:35,942 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-11-09 15:55:35,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:55:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-11-09 15:55:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:55:35,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:35,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:35,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 15:55:35,944 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:35,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2039045855, now seen corresponding path program 1 times [2020-11-09 15:55:35,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:35,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102422387] [2020-11-09 15:55:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 15:55:36,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102422387] [2020-11-09 15:55:36,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723218661] [2020-11-09 15:55:36,016 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 [2020-11-09 15:55:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:36,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:55:36,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:55:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 15:55:36,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:55:36,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-09 15:55:36,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [308867577] [2020-11-09 15:55:36,134 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:36,136 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:36,140 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2020-11-09 15:55:36,141 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:36,188 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [40907#(<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0), 40908#(or (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 0)), 40909#(or (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 0))] [2020-11-09 15:55:36,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:55:36,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:36,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:55:36,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 15:55:36,190 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 7 states. [2020-11-09 15:55:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:36,402 INFO L93 Difference]: Finished difference Result 4793 states and 16389 transitions. [2020-11-09 15:55:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 15:55:36,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-09 15:55:36,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:36,441 INFO L225 Difference]: With dead ends: 4793 [2020-11-09 15:55:36,442 INFO L226 Difference]: Without dead ends: 4713 [2020-11-09 15:55:36,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:55:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2020-11-09 15:55:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4713. [2020-11-09 15:55:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4713 states. [2020-11-09 15:55:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 16141 transitions. [2020-11-09 15:55:36,657 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 16141 transitions. Word has length 16 [2020-11-09 15:55:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:36,657 INFO L481 AbstractCegarLoop]: Abstraction has 4713 states and 16141 transitions. [2020-11-09 15:55:36,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:55:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 16141 transitions. [2020-11-09 15:55:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 15:55:36,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:36,660 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:36,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-09 15:55:36,874 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:36,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:36,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2030863678, now seen corresponding path program 1 times [2020-11-09 15:55:36,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:36,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187889269] [2020-11-09 15:55:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:36,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:36,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:36,914 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:36,915 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:36,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-09 15:55:36,915 WARN L386 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:36,916 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-11-09 15:55:36,928 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,928 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,928 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,928 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,929 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,929 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,929 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,929 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,929 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,929 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,930 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,930 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,930 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,930 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,930 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,930 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,931 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,931 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,931 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,931 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,931 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,931 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,932 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,932 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,932 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,932 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,932 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,932 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,933 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,933 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,933 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,933 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,934 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,934 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,934 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,934 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,934 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,934 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,935 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,935 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,935 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,935 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,935 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,935 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,936 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,936 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,937 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,937 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,937 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,937 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,937 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,937 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,938 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,938 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,938 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,938 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,938 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,938 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,939 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,939 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,939 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,939 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,939 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,939 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,939 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,940 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,940 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,940 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,941 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,941 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,941 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,942 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,943 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,943 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,943 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,943 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,944 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,945 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,945 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,945 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,945 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,947 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,947 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,947 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,947 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,948 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,949 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,949 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,950 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,950 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,950 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:36,956 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2020-11-09 15:55:36,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:36,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:36,957 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:36,957 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:36,957 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:36,957 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:36,957 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:36,957 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:36,957 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:36,960 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:36,960 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 108 transitions, 276 flow [2020-11-09 15:55:36,961 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 108 transitions, 276 flow [2020-11-09 15:55:36,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 108 transitions, 276 flow [2020-11-09 15:55:37,223 INFO L129 PetriNetUnfolder]: 221/1336 cut-off events. [2020-11-09 15:55:37,223 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-11-09 15:55:37,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 1336 events. 221/1336 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7802 event pairs, 23 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 742. Up to 80 conditions per place. [2020-11-09 15:55:37,254 INFO L116 LiptonReduction]: Number of co-enabled transitions 3100 [2020-11-09 15:55:39,346 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-11-09 15:55:39,496 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-11-09 15:55:41,018 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 15:55:41,299 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-11-09 15:55:41,714 WARN L194 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 15:55:41,988 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-09 15:55:42,143 WARN L194 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:55:42,287 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:55:42,427 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:42,578 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:42,593 INFO L131 LiptonReduction]: Checked pairs total: 11777 [2020-11-09 15:55:42,594 INFO L133 LiptonReduction]: Total number of compositions: 90 [2020-11-09 15:55:42,594 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-11-09 15:55:44,824 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-11-09 15:55:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-11-09 15:55:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:44,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:44,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:44,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:44,825 INFO L82 PathProgramCache]: Analyzing trace with hash 33017898, now seen corresponding path program 1 times [2020-11-09 15:55:44,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:44,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398091677] [2020-11-09 15:55:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:55:44,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398091677] [2020-11-09 15:55:44,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:44,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:44,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [737987175] [2020-11-09 15:55:44,854 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:44,855 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:44,855 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:44,856 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:44,856 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:44,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:44,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:44,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:44,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:44,857 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-11-09 15:55:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:45,517 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-11-09 15:55:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:45,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:45,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:45,791 INFO L225 Difference]: With dead ends: 26310 [2020-11-09 15:55:45,792 INFO L226 Difference]: Without dead ends: 23184 [2020-11-09 15:55:45,792 INFO L677 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 [2020-11-09 15:55:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-11-09 15:55:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-11-09 15:55:47,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-11-09 15:55:47,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-11-09 15:55:47,438 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-11-09 15:55:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:47,438 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-11-09 15:55:47,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-11-09 15:55:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:55:47,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:47,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:47,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-09 15:55:47,439 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:47,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1086714792, now seen corresponding path program 1 times [2020-11-09 15:55:47,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:47,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298824011] [2020-11-09 15:55:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 15:55:47,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298824011] [2020-11-09 15:55:47,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:47,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:55:47,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1760906779] [2020-11-09 15:55:47,472 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:47,472 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:47,473 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:55:47,473 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:47,474 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:47,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:55:47,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:55:47,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:47,476 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-11-09 15:55:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:47,892 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-11-09 15:55:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:55:47,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:55:47,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:48,255 INFO L225 Difference]: With dead ends: 24543 [2020-11-09 15:55:48,255 INFO L226 Difference]: Without dead ends: 24543 [2020-11-09 15:55:48,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-11-09 15:55:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-11-09 15:55:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-11-09 15:55:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-11-09 15:55:49,589 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-11-09 15:55:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:49,589 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-11-09 15:55:49,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:55:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-11-09 15:55:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:55:49,590 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:49,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:49,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-09 15:55:49,591 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:49,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1986019559, now seen corresponding path program 1 times [2020-11-09 15:55:49,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:49,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791987899] [2020-11-09 15:55:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 15:55:49,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791987899] [2020-11-09 15:55:49,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834470642] [2020-11-09 15:55:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:55:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:49,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:55:49,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:55:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 15:55:49,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:55:49,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-09 15:55:49,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1772042221] [2020-11-09 15:55:49,772 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:49,777 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:49,782 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-11-09 15:55:49,783 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:49,852 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [197163#(<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0), 197165#(or (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 0)), 197164#(or (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 0))] [2020-11-09 15:55:49,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:55:49,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:55:49,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 15:55:49,854 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-11-09 15:55:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:50,454 INFO L93 Difference]: Finished difference Result 23573 states and 96247 transitions. [2020-11-09 15:55:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 15:55:50,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-09 15:55:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:50,567 INFO L225 Difference]: With dead ends: 23573 [2020-11-09 15:55:50,567 INFO L226 Difference]: Without dead ends: 23493 [2020-11-09 15:55:50,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:55:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2020-11-09 15:55:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 23493. [2020-11-09 15:55:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23493 states. [2020-11-09 15:55:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23493 states to 23493 states and 95999 transitions. [2020-11-09 15:55:51,810 INFO L78 Accepts]: Start accepts. Automaton has 23493 states and 95999 transitions. Word has length 16 [2020-11-09 15:55:51,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:51,810 INFO L481 AbstractCegarLoop]: Abstraction has 23493 states and 95999 transitions. [2020-11-09 15:55:51,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:55:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 23493 states and 95999 transitions. [2020-11-09 15:55:51,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-09 15:55:51,816 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:51,816 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:52,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 15:55:52,026 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:52,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1007891007, now seen corresponding path program 1 times [2020-11-09 15:55:52,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:52,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804887998] [2020-11-09 15:55:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:52,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:52,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:52,081 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:52,082 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:52,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-09 15:55:52,082 WARN L386 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:52,083 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-11-09 15:55:52,096 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,096 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,096 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,096 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,096 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,096 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,098 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,098 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,098 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,098 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,098 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,098 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,100 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,100 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,100 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,100 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,100 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,100 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,100 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,101 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,101 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,101 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,101 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,101 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,101 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,102 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,102 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,102 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,102 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,102 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,102 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,103 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,103 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,103 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,103 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,103 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,103 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,103 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,103 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,104 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,104 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,104 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,105 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,105 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,105 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,105 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,105 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,105 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,105 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,106 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,106 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,106 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,106 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,106 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,106 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,107 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,107 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,107 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,107 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,107 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,107 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,107 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,107 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,108 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,108 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,108 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,108 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,108 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,108 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,109 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,109 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,109 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,109 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,110 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,111 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,111 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,111 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,111 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,112 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,113 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,113 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,113 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,113 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,114 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,115 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,115 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,115 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,115 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,115 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,117 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,117 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,117 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,117 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,117 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,119 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,119 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,119 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,119 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,119 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:52,125 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2020-11-09 15:55:52,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:52,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:52,126 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:52,126 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:52,127 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:52,127 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:52,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:52,127 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:52,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:52,128 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:52,129 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 115 transitions, 308 flow [2020-11-09 15:55:52,129 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 115 transitions, 308 flow [2020-11-09 15:55:52,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 308 flow [2020-11-09 15:55:52,805 INFO L129 PetriNetUnfolder]: 463/2615 cut-off events. [2020-11-09 15:55:52,806 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-11-09 15:55:52,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 2615 events. 463/2615 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18904 event pairs, 72 based on Foata normal form. 0/2152 useless extension candidates. Maximal degree in co-relation 1435. Up to 192 conditions per place. [2020-11-09 15:55:52,867 INFO L116 LiptonReduction]: Number of co-enabled transitions 3960 [2020-11-09 15:55:53,797 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-09 15:55:55,730 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 15:55:55,867 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-09 15:55:56,001 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 15:55:56,296 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-11-09 15:55:56,818 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-11-09 15:55:57,125 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-11-09 15:55:57,551 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-11-09 15:55:57,696 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:55:58,071 WARN L194 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-11-09 15:55:58,226 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:58,231 INFO L131 LiptonReduction]: Checked pairs total: 14715 [2020-11-09 15:55:58,231 INFO L133 LiptonReduction]: Total number of compositions: 88 [2020-11-09 15:55:58,232 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-11-09 15:56:28,936 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-11-09 15:56:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-11-09 15:56:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:56:28,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:28,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:56:28,936 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash 39516231, now seen corresponding path program 1 times [2020-11-09 15:56:28,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:28,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951929124] [2020-11-09 15:56:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:56:28,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951929124] [2020-11-09 15:56:28,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:56:28,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:56:28,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1579222949] [2020-11-09 15:56:28,999 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:56:29,000 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:56:29,000 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:56:29,000 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:56:29,000 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:56:29,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:56:29,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:56:29,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:56:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:56:29,002 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-11-09 15:56:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:56:31,201 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-11-09 15:56:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:56:31,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:56:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:56:32,020 INFO L225 Difference]: With dead ends: 127122 [2020-11-09 15:56:32,021 INFO L226 Difference]: Without dead ends: 111496 [2020-11-09 15:56:32,021 INFO L677 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 [2020-11-09 15:56:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-11-09 15:56:39,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-11-09 15:56:39,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-11-09 15:56:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-11-09 15:56:41,090 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-11-09 15:56:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:56:41,090 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-11-09 15:56:41,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:56:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-11-09 15:56:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:56:41,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:41,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:56:41,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-09 15:56:41,091 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1282833239, now seen corresponding path program 1 times [2020-11-09 15:56:41,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:41,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752841696] [2020-11-09 15:56:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 15:56:41,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752841696] [2020-11-09 15:56:41,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:56:41,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:56:41,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1529159854] [2020-11-09 15:56:41,139 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:56:41,140 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:56:41,140 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:56:41,140 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:56:41,141 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:56:41,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:56:41,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:56:41,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:56:41,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:56:41,142 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-11-09 15:56:43,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:56:43,309 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-11-09 15:56:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:56:43,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:56:43,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:56:44,552 INFO L225 Difference]: With dead ends: 120747 [2020-11-09 15:56:44,552 INFO L226 Difference]: Without dead ends: 120747 [2020-11-09 15:56:44,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:56:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-11-09 15:56:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-11-09 15:56:51,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-11-09 15:56:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-11-09 15:56:52,901 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-11-09 15:56:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:56:52,901 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-11-09 15:56:52,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:56:52,901 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-11-09 15:56:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:56:52,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:52,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:56:52,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-09 15:56:52,902 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:52,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:52,903 INFO L82 PathProgramCache]: Analyzing trace with hash -277261200, now seen corresponding path program 1 times [2020-11-09 15:56:52,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:52,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387688821] [2020-11-09 15:56:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 15:56:52,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387688821] [2020-11-09 15:56:52,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152211608] [2020-11-09 15:56:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:56:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:53,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:56:53,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:56:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 15:56:53,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:56:53,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-11-09 15:56:53,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1044893266] [2020-11-09 15:56:53,086 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:56:53,089 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:56:53,092 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-11-09 15:56:53,092 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:56:53,117 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:56:53,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:56:53,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:56:53,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:56:53,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:56:53,118 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 5 states. [2020-11-09 15:56:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:56:55,047 INFO L93 Difference]: Finished difference Result 112372 states and 511618 transitions. [2020-11-09 15:56:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:56:55,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-09 15:56:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:56:56,377 INFO L225 Difference]: With dead ends: 112372 [2020-11-09 15:56:56,377 INFO L226 Difference]: Without dead ends: 112372 [2020-11-09 15:56:56,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:57:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112372 states. [2020-11-09 15:57:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112372 to 109282. [2020-11-09 15:57:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109282 states. [2020-11-09 15:57:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109282 states to 109282 states and 500942 transitions. [2020-11-09 15:57:05,982 INFO L78 Accepts]: Start accepts. Automaton has 109282 states and 500942 transitions. Word has length 16 [2020-11-09 15:57:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:57:05,987 INFO L481 AbstractCegarLoop]: Abstraction has 109282 states and 500942 transitions. [2020-11-09 15:57:05,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:57:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 109282 states and 500942 transitions. [2020-11-09 15:57:06,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-09 15:57:06,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:57:06,019 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:57:06,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:57:06,234 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:57:06,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:57:06,235 INFO L82 PathProgramCache]: Analyzing trace with hash -559415121, now seen corresponding path program 1 times [2020-11-09 15:57:06,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:57:06,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308124497] [2020-11-09 15:57:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:57:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:57:06,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:57:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:57:06,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:57:06,279 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:57:06,279 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:57:06,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-09 15:57:06,280 WARN L386 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:57:06,280 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-11-09 15:57:06,292 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,292 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,292 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,292 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,292 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,293 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,293 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,293 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,293 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,293 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,293 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,293 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,294 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,295 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,295 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,295 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,295 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,295 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,295 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,295 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,296 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,297 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,297 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,297 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,297 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,297 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,297 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,297 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,298 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,299 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,299 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,299 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,299 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,299 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,299 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,299 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,300 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,300 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,300 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,300 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,300 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,300 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,300 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,300 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,301 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,301 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,301 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,301 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,301 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,301 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,301 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,302 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,302 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,302 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,302 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,302 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,302 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,302 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,303 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,303 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,303 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,303 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,303 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,303 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,303 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,303 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,304 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,304 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,304 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,304 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,304 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,304 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,304 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,304 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,305 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,305 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,305 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,305 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,305 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,307 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,308 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,308 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,308 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,308 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,310 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,310 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,310 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,310 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,310 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,311 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,312 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,312 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,312 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,312 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,313 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,314 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,314 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,314 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,314 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,316 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,316 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,316 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,316 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,316 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,318 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,318 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,318 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,318 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,318 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:57:06,325 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2020-11-09 15:57:06,325 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:57:06,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:57:06,326 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:57:06,326 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:57:06,326 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:57:06,326 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:57:06,326 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:57:06,326 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:57:06,326 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:57:06,328 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:57:06,328 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 122 transitions, 342 flow [2020-11-09 15:57:06,328 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 122 transitions, 342 flow [2020-11-09 15:57:06,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 342 flow [2020-11-09 15:57:07,565 INFO L129 PetriNetUnfolder]: 977/5190 cut-off events. [2020-11-09 15:57:07,566 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-11-09 15:57:07,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 5190 events. 977/5190 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 45065 event pairs, 201 based on Foata normal form. 0/4277 useless extension candidates. Maximal degree in co-relation 2833. Up to 448 conditions per place. [2020-11-09 15:57:07,708 INFO L116 LiptonReduction]: Number of co-enabled transitions 4900 [2020-11-09 15:57:09,528 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-09 15:57:10,943 WARN L194 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 15:57:11,286 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-11-09 15:57:11,597 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-09 15:57:11,792 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-09 15:57:12,146 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-09 15:57:12,312 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-09 15:57:12,710 WARN L194 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 15:57:12,866 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:57:13,153 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-11-09 15:57:13,314 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:57:13,325 INFO L131 LiptonReduction]: Checked pairs total: 19420 [2020-11-09 15:57:13,325 INFO L133 LiptonReduction]: Total number of compositions: 92 [2020-11-09 15:57:13,325 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-11-09 15:58:59,593 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-09 15:58:59,599 WARN L250 ceAbstractionStarter]: Timeout [2020-11-09 15:58:59,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:58:59 BasicIcfg [2020-11-09 15:58:59,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:58:59,602 INFO L168 Benchmark]: Toolchain (without parser) took 229830.75 ms. Allocated memory was 158.3 MB in the beginning and 7.8 GB in the end (delta: 7.6 GB). Free memory was 132.9 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 3.7 GB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,609 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 125.8 MB. Free memory is still 86.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:58:59,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.97 ms. Allocated memory is still 158.3 MB. Free memory was 132.3 MB in the beginning and 103.0 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.04 ms. Allocated memory is still 158.3 MB. Free memory was 103.0 MB in the beginning and 101.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,618 INFO L168 Benchmark]: Boogie Preprocessor took 31.65 ms. Allocated memory is still 158.3 MB. Free memory was 101.0 MB in the beginning and 99.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,620 INFO L168 Benchmark]: RCFGBuilder took 545.39 ms. Allocated memory is still 158.3 MB. Free memory was 99.4 MB in the beginning and 126.3 MB in the end (delta: -26.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,620 INFO L168 Benchmark]: TraceAbstraction took 228523.29 ms. Allocated memory was 158.3 MB in the beginning and 7.8 GB in the end (delta: 7.6 GB). Free memory was 126.0 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 3.6 GB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 125.8 MB. Free memory is still 86.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 664.97 ms. Allocated memory is still 158.3 MB. Free memory was 132.3 MB in the beginning and 103.0 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.04 ms. Allocated memory is still 158.3 MB. Free memory was 103.0 MB in the beginning and 101.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.65 ms. Allocated memory is still 158.3 MB. Free memory was 101.0 MB in the beginning and 99.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 545.39 ms. Allocated memory is still 158.3 MB. Free memory was 99.4 MB in the beginning and 126.3 MB in the end (delta: -26.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 228523.29 ms. Allocated memory was 158.3 MB in the beginning and 7.8 GB in the end (delta: 7.6 GB). Free memory was 126.0 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 3.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 238 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 6 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.9s, 75 PlacesBefore, 15 PlacesAfterwards, 80 TransitionsBefore, 14 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 485 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 524 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 46 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.4s, 83 PlacesBefore, 25 PlacesAfterwards, 87 TransitionsBefore, 23 TransitionsAfterwards, 1000 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 81 TotalNumberOfCompositions, 2597 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 814 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 93 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 91 PlacesBefore, 31 PlacesAfterwards, 94 TransitionsBefore, 28 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 79 TotalNumberOfCompositions, 4210 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1198 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 116 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.4s, 99 PlacesBefore, 37 PlacesAfterwards, 101 TransitionsBefore, 33 TransitionsAfterwards, 2320 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 84 TotalNumberOfCompositions, 7336 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1566 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 258 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.6s, 107 PlacesBefore, 43 PlacesAfterwards, 108 TransitionsBefore, 38 TransitionsAfterwards, 3100 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 90 TotalNumberOfCompositions, 11777 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1909 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 300 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.1s, 115 PlacesBefore, 49 PlacesAfterwards, 115 TransitionsBefore, 43 TransitionsAfterwards, 3960 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 88 TotalNumberOfCompositions, 14715 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2528 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 410 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.9s, 123 PlacesBefore, 55 PlacesAfterwards, 122 TransitionsBefore, 48 TransitionsAfterwards, 4900 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 19420 MoverChecksTotal - TimeoutResultAtElement [Line: 683]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 683). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 197004 states. Currently 32287 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 228.1s, OverallIterations: 20, TraceHistogramMax: 7, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 180.0s, HoareTripleCheckerStatistics: 488 SDtfs, 569 SDslu, 595 SDs, 0 SdLazy, 242 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 62 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 32.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 8848 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 5707 SizeOfPredicates, 3 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 17/23 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