/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:55:07,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:55:07,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:55:07,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:55:07,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:55:07,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:55:07,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:55:07,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:55:07,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:55:07,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:55:07,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:55:07,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:55:07,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:55:07,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:55:07,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:55:07,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:55:07,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:55:07,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:55:07,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:55:07,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:55:07,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:55:07,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:55:07,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:55:07,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:55:07,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:55:07,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:55:07,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:55:07,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:55:07,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:55:07,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:55:07,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:55:07,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:55:07,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:55:07,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:55:07,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:55:07,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:55:07,190 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 15:55:07,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:55:07,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:55:07,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:55:07,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:55:07,247 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:55:07,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:55:07,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:55:07,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:55:07,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:55:07,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:55:07,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:55:07,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:55:07,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:55:07,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:55:07,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:55:07,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:55:07,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:55:07,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:55:07,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:55:07,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:55:07,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:55:07,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:55:07,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:55:07,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:55:07,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:55:07,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:55:07,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:55:07,253 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:55:07,253 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:55:07,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:55:07,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:55:07,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:55:07,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:55:07,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:55:07,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:55:07,696 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:55:07,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-11-09 15:55:07,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdaa339f/b35459e1c88e48e79262c6e52d6a7abc/FLAGad51b5d62 [2020-11-09 15:55:08,415 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:55:08,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-11-09 15:55:08,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdaa339f/b35459e1c88e48e79262c6e52d6a7abc/FLAGad51b5d62 [2020-11-09 15:55:08,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdaa339f/b35459e1c88e48e79262c6e52d6a7abc [2020-11-09 15:55:08,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:55:08,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:55:08,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:55:08,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:55:08,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:55:08,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:55:08" (1/1) ... [2020-11-09 15:55:08,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3332d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:08, skipping insertion in model container [2020-11-09 15:55:08,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:55:08" (1/1) ... [2020-11-09 15:55:08,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:55:08,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:55:09,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:55:09,272 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:55:09,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:55:09,459 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:55:09,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09 WrapperNode [2020-11-09 15:55:09,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:55:09,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:55:09,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:55:09,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:55:09,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:55:09,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:55:09,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:55:09,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:55:09,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (1/1) ... [2020-11-09 15:55:09,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:55:09,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:55:09,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:55:09,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:55:09,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (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 15:55:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-11-09 15:55:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-09 15:55:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:55:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-11-09 15:55:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-11-09 15:55:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:55:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:55:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:55:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:55:09,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:55:09,633 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 15:55:10,190 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:55:10,190 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-09 15:55:10,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:55:10 BoogieIcfgContainer [2020-11-09 15:55:10,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:55:10,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:55:10,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:55:10,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:55:10,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:55:08" (1/3) ... [2020-11-09 15:55:10,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20da6c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:55:10, skipping insertion in model container [2020-11-09 15:55:10,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:55:09" (2/3) ... [2020-11-09 15:55:10,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20da6c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:55:10, skipping insertion in model container [2020-11-09 15:55:10,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:55:10" (3/3) ... [2020-11-09 15:55:10,203 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-11-09 15:55:10,220 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:55:10,221 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:55:10,225 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:55:10,226 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:55:10,266 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,267 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,267 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,267 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,267 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,268 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,268 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,268 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,268 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,268 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,269 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,270 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,270 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,270 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,273 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,273 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,273 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,274 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,274 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:10,290 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-09 15:55:10,303 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:10,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:10,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:10,340 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:10,340 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:10,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:10,341 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:10,341 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:10,341 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:10,358 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:10,359 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 80 transitions, 168 flow [2020-11-09 15:55:10,362 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 80 transitions, 168 flow [2020-11-09 15:55:10,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 80 transitions, 168 flow [2020-11-09 15:55:10,447 INFO L129 PetriNetUnfolder]: 14/117 cut-off events. [2020-11-09 15:55:10,448 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-09 15:55:10,452 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 15:55:10,454 INFO L116 LiptonReduction]: Number of co-enabled transitions 420 [2020-11-09 15:55:13,378 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-09 15:55:13,602 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-09 15:55:14,093 WARN L194 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 15:55:14,262 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:14,697 WARN L194 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 15:55:14,866 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:15,356 WARN L194 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-11-09 15:55:15,710 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 15:55:16,114 WARN L194 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-11-09 15:55:16,471 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 15:55:16,494 INFO L131 LiptonReduction]: Checked pairs total: 485 [2020-11-09 15:55:16,494 INFO L133 LiptonReduction]: Total number of compositions: 86 [2020-11-09 15:55:16,502 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-11-09 15:55:16,510 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-11-09 15:55:16,512 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-09 15:55:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:16,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:16,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:16,518 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:16,524 INFO L82 PathProgramCache]: Analyzing trace with hash 9839405, now seen corresponding path program 1 times [2020-11-09 15:55:16,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:16,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892140060] [2020-11-09 15:55:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:16,724 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 15:55:16,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892140060] [2020-11-09 15:55:16,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:16,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:16,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1925358647] [2020-11-09 15:55:16,727 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:16,730 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:16,741 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:16,741 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:16,745 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:16,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:16,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:16,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:16,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:16,763 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-11-09 15:55:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:16,798 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-09 15:55:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:16,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:16,808 INFO L225 Difference]: With dead ends: 27 [2020-11-09 15:55:16,808 INFO L226 Difference]: Without dead ends: 23 [2020-11-09 15:55:16,809 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 15:55:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-09 15:55:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-09 15:55:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-09 15:55:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-11-09 15:55:16,844 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-11-09 15:55:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:16,844 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-11-09 15:55:16,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-11-09 15:55:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 15:55:16,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:16,845 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-09 15:55:16,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:55:16,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:16,846 INFO L82 PathProgramCache]: Analyzing trace with hash 854847300, now seen corresponding path program 1 times [2020-11-09 15:55:16,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:16,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599873547] [2020-11-09 15:55:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:16,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:16,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:16,939 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:16,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:16,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:55:16,941 WARN L386 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:16,941 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-11-09 15:55:16,948 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,949 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,949 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,949 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,949 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,949 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,949 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,949 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,950 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,950 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,950 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,950 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,950 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,951 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,951 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,951 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,951 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,951 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,951 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,952 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,952 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,952 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,952 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,952 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,952 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,953 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,953 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,953 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,953 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,954 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,954 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,957 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,957 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,962 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,962 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,963 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,963 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,963 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:16,966 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-11-09 15:55:16,966 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:16,967 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:16,967 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:16,967 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:16,967 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:16,967 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:16,968 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:16,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:16,968 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:16,970 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:16,970 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 87 transitions, 192 flow [2020-11-09 15:55:16,971 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 87 transitions, 192 flow [2020-11-09 15:55:16,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 87 transitions, 192 flow [2020-11-09 15:55:17,009 INFO L129 PetriNetUnfolder]: 27/207 cut-off events. [2020-11-09 15:55:17,009 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-11-09 15:55:17,010 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 15:55:17,013 INFO L116 LiptonReduction]: Number of co-enabled transitions 1000 [2020-11-09 15:55:19,483 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 15:55:19,660 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 15:55:20,093 WARN L194 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 15:55:20,271 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:20,578 WARN L194 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 15:55:20,724 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:21,050 WARN L194 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-11-09 15:55:21,334 WARN L194 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 15:55:21,656 WARN L194 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-11-09 15:55:21,953 WARN L194 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 15:55:21,958 INFO L131 LiptonReduction]: Checked pairs total: 2597 [2020-11-09 15:55:21,959 INFO L133 LiptonReduction]: Total number of compositions: 81 [2020-11-09 15:55:21,959 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-11-09 15:55:21,974 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-11-09 15:55:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-11-09 15:55:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:21,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:21,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:21,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:21,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:21,976 INFO L82 PathProgramCache]: Analyzing trace with hash 15288450, now seen corresponding path program 1 times [2020-11-09 15:55:21,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:21,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037148876] [2020-11-09 15:55:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:22,065 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 15:55:22,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037148876] [2020-11-09 15:55:22,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:22,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:22,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [200298337] [2020-11-09 15:55:22,066 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:22,066 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:22,067 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:22,067 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:22,068 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:22,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:22,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:22,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:22,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:22,069 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-11-09 15:55:22,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:22,104 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-11-09 15:55:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:22,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:22,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:22,112 INFO L225 Difference]: With dead ends: 242 [2020-11-09 15:55:22,112 INFO L226 Difference]: Without dead ends: 216 [2020-11-09 15:55:22,112 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 15:55:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-09 15:55:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-09 15:55:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-09 15:55:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-11-09 15:55:22,146 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-11-09 15:55:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:22,146 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-11-09 15:55:22,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-11-09 15:55:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:55:22,147 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:22,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:22,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:55:22,148 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:22,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:22,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1084470026, now seen corresponding path program 1 times [2020-11-09 15:55:22,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:22,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791556582] [2020-11-09 15:55:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:22,210 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 15:55:22,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791556582] [2020-11-09 15:55:22,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:22,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:55:22,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1662437063] [2020-11-09 15:55:22,211 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:22,212 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:22,214 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:55:22,215 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:22,215 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:22,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:55:22,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:22,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:55:22,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:22,216 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-11-09 15:55:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:22,259 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-11-09 15:55:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:55:22,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:55:22,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:22,263 INFO L225 Difference]: With dead ends: 203 [2020-11-09 15:55:22,263 INFO L226 Difference]: Without dead ends: 203 [2020-11-09 15:55:22,264 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 15:55:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-09 15:55:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-11-09 15:55:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-11-09 15:55:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-11-09 15:55:22,285 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-11-09 15:55:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:22,286 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-11-09 15:55:22,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:55:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-11-09 15:55:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:55:22,287 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:22,287 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-11-09 15:55:22,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:55:22,288 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:22,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:22,288 INFO L82 PathProgramCache]: Analyzing trace with hash 269674759, now seen corresponding path program 1 times [2020-11-09 15:55:22,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:22,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078299185] [2020-11-09 15:55:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:22,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:22,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:22,338 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:22,339 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:22,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:55:22,339 WARN L386 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:22,340 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-11-09 15:55:22,348 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,348 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,348 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,349 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,349 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,351 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,351 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,351 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,351 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,351 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,351 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,351 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,352 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,352 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,352 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,352 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,352 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,352 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,353 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,353 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,353 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,354 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,354 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,354 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,354 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,354 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,354 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,354 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,355 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,355 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,355 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,355 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,356 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,356 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,357 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,357 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,358 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,358 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,358 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,359 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,359 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,359 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,359 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,360 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:22,362 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-11-09 15:55:22,363 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:22,364 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:22,364 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:22,364 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:22,364 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:22,364 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:22,364 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:22,364 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:22,364 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:22,366 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:22,367 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 94 transitions, 218 flow [2020-11-09 15:55:22,367 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 94 transitions, 218 flow [2020-11-09 15:55:22,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 94 transitions, 218 flow [2020-11-09 15:55:22,461 INFO L129 PetriNetUnfolder]: 53/374 cut-off events. [2020-11-09 15:55:22,461 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-11-09 15:55:22,468 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 15:55:22,475 INFO L116 LiptonReduction]: Number of co-enabled transitions 1620 [2020-11-09 15:55:24,196 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-11-09 15:55:24,364 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-11-09 15:55:25,262 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-11-09 15:55:25,876 WARN L194 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-09 15:55:26,135 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 15:55:26,488 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 15:55:26,771 WARN L194 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 15:55:26,785 INFO L131 LiptonReduction]: Checked pairs total: 4210 [2020-11-09 15:55:26,786 INFO L133 LiptonReduction]: Total number of compositions: 79 [2020-11-09 15:55:26,786 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-11-09 15:55:26,840 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-11-09 15:55:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-11-09 15:55:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:26,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:26,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:26,841 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 20773836, now seen corresponding path program 1 times [2020-11-09 15:55:26,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:26,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511911894] [2020-11-09 15:55:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:26,917 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 15:55:26,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511911894] [2020-11-09 15:55:26,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:26,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:26,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [447655641] [2020-11-09 15:55:26,918 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:26,919 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:26,920 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:26,920 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:26,921 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:26,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:26,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:26,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:26,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:26,923 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-11-09 15:55:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:26,961 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-11-09 15:55:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:26,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:26,974 INFO L225 Difference]: With dead ends: 1150 [2020-11-09 15:55:26,974 INFO L226 Difference]: Without dead ends: 1024 [2020-11-09 15:55:26,974 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 15:55:26,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-11-09 15:55:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-11-09 15:55:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-11-09 15:55:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-11-09 15:55:27,044 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-11-09 15:55:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:27,047 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-11-09 15:55:27,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-11-09 15:55:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:55:27,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:27,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:27,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:55:27,048 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:27,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1395614296, now seen corresponding path program 1 times [2020-11-09 15:55:27,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:27,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983394468] [2020-11-09 15:55:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:27,109 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 15:55:27,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983394468] [2020-11-09 15:55:27,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:27,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:55:27,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1576531117] [2020-11-09 15:55:27,110 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:27,111 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:27,112 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:55:27,112 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:27,112 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:27,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:55:27,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:27,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:55:27,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:27,114 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-11-09 15:55:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:27,152 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-11-09 15:55:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:55:27,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:55:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:27,161 INFO L225 Difference]: With dead ends: 1015 [2020-11-09 15:55:27,161 INFO L226 Difference]: Without dead ends: 1015 [2020-11-09 15:55:27,162 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 15:55:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-11-09 15:55:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-11-09 15:55:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-11-09 15:55:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-11-09 15:55:27,197 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-11-09 15:55:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:27,197 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-11-09 15:55:27,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:55:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-11-09 15:55:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:55:27,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:27,200 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-11-09 15:55:27,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:55:27,200 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1374284163, now seen corresponding path program 1 times [2020-11-09 15:55:27,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:27,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684357765] [2020-11-09 15:55:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:27,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:27,267 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:27,278 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:27,279 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:27,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:55:27,279 WARN L386 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:27,279 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-11-09 15:55:27,288 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,288 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,288 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,289 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,289 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,289 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,289 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,289 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,289 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,289 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,290 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,290 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,290 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,290 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,290 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,291 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,291 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,291 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,291 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,291 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,291 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,291 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,291 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,292 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,292 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,292 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,292 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,292 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,293 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,293 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,293 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,293 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,293 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,293 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,293 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,294 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,294 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,294 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,294 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,294 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,294 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,295 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,295 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,295 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,295 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,295 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,295 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,295 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,296 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,296 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,296 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,296 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,296 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,296 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,296 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,297 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,297 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,297 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,297 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,297 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,298 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,299 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,299 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,300 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,300 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,300 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,301 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,301 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,301 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,302 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,302 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,304 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,304 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,304 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,304 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,304 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:27,309 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-09 15:55:27,310 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:27,311 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:27,311 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:27,311 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:27,311 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:27,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:27,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:27,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:27,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:27,313 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:27,313 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 101 transitions, 246 flow [2020-11-09 15:55:27,313 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 101 transitions, 246 flow [2020-11-09 15:55:27,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 101 transitions, 246 flow [2020-11-09 15:55:27,412 INFO L129 PetriNetUnfolder]: 107/697 cut-off events. [2020-11-09 15:55:27,412 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-11-09 15:55:27,415 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 15:55:27,427 INFO L116 LiptonReduction]: Number of co-enabled transitions 2320 [2020-11-09 15:55:30,302 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-11-09 15:55:30,521 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-11-09 15:55:30,655 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 15:55:30,841 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 15:55:31,332 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-11-09 15:55:31,851 WARN L194 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 15:55:31,988 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:55:32,282 WARN L194 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-11-09 15:55:32,440 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:32,448 INFO L131 LiptonReduction]: Checked pairs total: 7336 [2020-11-09 15:55:32,449 INFO L133 LiptonReduction]: Total number of compositions: 84 [2020-11-09 15:55:32,449 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-11-09 15:55:32,812 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-11-09 15:55:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-11-09 15:55:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:32,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:32,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:32,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash 26742612, now seen corresponding path program 1 times [2020-11-09 15:55:32,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:32,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154706229] [2020-11-09 15:55:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:32,846 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 15:55:32,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154706229] [2020-11-09 15:55:32,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:32,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:32,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2121216440] [2020-11-09 15:55:32,847 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:32,847 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:32,848 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:32,848 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:32,848 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:32,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:32,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:32,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:32,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:32,849 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-11-09 15:55:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:32,942 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-11-09 15:55:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:32,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:32,994 INFO L225 Difference]: With dead ends: 5482 [2020-11-09 15:55:32,994 INFO L226 Difference]: Without dead ends: 4856 [2020-11-09 15:55:32,995 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 15:55:33,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-11-09 15:55:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-11-09 15:55:33,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-11-09 15:55:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-11-09 15:55:33,245 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-11-09 15:55:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:33,246 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-11-09 15:55:33,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-11-09 15:55:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:55:33,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:33,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:33,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 15:55:33,248 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:33,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:33,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1049833476, now seen corresponding path program 1 times [2020-11-09 15:55:33,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:33,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081029360] [2020-11-09 15:55:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:33,299 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 15:55:33,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081029360] [2020-11-09 15:55:33,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:33,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:55:33,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [531612786] [2020-11-09 15:55:33,300 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:33,301 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:33,301 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:55:33,301 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:33,302 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:33,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:55:33,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:33,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:55:33,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:33,303 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-11-09 15:55:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:33,404 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-11-09 15:55:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:55:33,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:55:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:33,452 INFO L225 Difference]: With dead ends: 4995 [2020-11-09 15:55:33,453 INFO L226 Difference]: Without dead ends: 4995 [2020-11-09 15:55:33,453 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 15:55:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-11-09 15:55:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-11-09 15:55:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-11-09 15:55:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-11-09 15:55:33,757 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-11-09 15:55:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:33,757 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-11-09 15:55:33,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:55:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-11-09 15:55:33,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:55:33,763 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:33,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:33,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 15:55:33,763 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:33,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2039045855, now seen corresponding path program 1 times [2020-11-09 15:55:33,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:33,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868500641] [2020-11-09 15:55:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:33,879 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 15:55:33,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868500641] [2020-11-09 15:55:33,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430040721] [2020-11-09 15:55:33,880 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 15:55:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:33,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:55:33,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:55:34,120 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 15:55:34,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:55:34,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-09 15:55:34,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1385149737] [2020-11-09 15:55:34,121 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:34,124 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:34,127 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2020-11-09 15:55:34,128 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:34,165 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 15:55:34,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:55:34,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:34,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:55:34,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 15:55:34,166 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 7 states. [2020-11-09 15:55:34,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:34,308 INFO L93 Difference]: Finished difference Result 4793 states and 16389 transitions. [2020-11-09 15:55:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 15:55:34,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-09 15:55:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:34,346 INFO L225 Difference]: With dead ends: 4793 [2020-11-09 15:55:34,346 INFO L226 Difference]: Without dead ends: 4713 [2020-11-09 15:55:34,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:55:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2020-11-09 15:55:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4713. [2020-11-09 15:55:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4713 states. [2020-11-09 15:55:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 16141 transitions. [2020-11-09 15:55:34,541 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 16141 transitions. Word has length 16 [2020-11-09 15:55:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:34,542 INFO L481 AbstractCegarLoop]: Abstraction has 4713 states and 16141 transitions. [2020-11-09 15:55:34,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:55:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 16141 transitions. [2020-11-09 15:55:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 15:55:34,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:34,544 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:34,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-09 15:55:34,759 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:34,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:34,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2030863678, now seen corresponding path program 1 times [2020-11-09 15:55:34,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:34,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279059873] [2020-11-09 15:55:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:34,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:34,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:34,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:34,795 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:34,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-09 15:55:34,795 WARN L386 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:34,796 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-11-09 15:55:34,805 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,806 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,806 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,806 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,806 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,806 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,806 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,806 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,807 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,807 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,807 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,807 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,807 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,807 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,807 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,808 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,808 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,808 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,808 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,808 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,808 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,808 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,808 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,809 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,809 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,809 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,809 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,809 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,809 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,810 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,811 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,811 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,811 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,811 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,811 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,811 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,811 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,812 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,813 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,813 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,813 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,813 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,813 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,813 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,813 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,814 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,814 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,814 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,814 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,814 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,814 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,814 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,814 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,815 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,815 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,815 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,815 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,815 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,815 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,817 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,817 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,817 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,817 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,818 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,819 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,819 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,819 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,819 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,819 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,821 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,821 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,821 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,821 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,821 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,822 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,822 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,822 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,823 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,823 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:34,827 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2020-11-09 15:55:34,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:34,828 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:34,828 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:34,828 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:34,828 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:34,829 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:34,829 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:34,829 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:34,829 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:34,830 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:34,830 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 108 transitions, 276 flow [2020-11-09 15:55:34,831 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 108 transitions, 276 flow [2020-11-09 15:55:34,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 108 transitions, 276 flow [2020-11-09 15:55:34,991 INFO L129 PetriNetUnfolder]: 221/1336 cut-off events. [2020-11-09 15:55:34,991 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-11-09 15:55:34,997 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 15:55:35,027 INFO L116 LiptonReduction]: Number of co-enabled transitions 3100 [2020-11-09 15:55:36,938 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-11-09 15:55:37,099 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-11-09 15:55:38,568 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 15:55:38,833 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-11-09 15:55:39,155 WARN L194 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 15:55:39,421 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-09 15:55:39,577 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:55:39,713 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:55:39,848 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:39,989 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:40,008 INFO L131 LiptonReduction]: Checked pairs total: 11777 [2020-11-09 15:55:40,008 INFO L133 LiptonReduction]: Total number of compositions: 90 [2020-11-09 15:55:40,009 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-11-09 15:55:42,156 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-11-09 15:55:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-11-09 15:55:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:55:42,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:42,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:55:42,157 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:42,157 INFO L82 PathProgramCache]: Analyzing trace with hash 33017898, now seen corresponding path program 1 times [2020-11-09 15:55:42,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:42,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269262464] [2020-11-09 15:55:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:42,177 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 15:55:42,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269262464] [2020-11-09 15:55:42,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:42,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:55:42,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1053062623] [2020-11-09 15:55:42,178 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:42,178 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:42,179 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:55:42,179 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:42,179 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:42,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:55:42,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:55:42,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:55:42,180 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-11-09 15:55:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:42,538 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-11-09 15:55:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:55:42,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:55:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:42,688 INFO L225 Difference]: With dead ends: 26310 [2020-11-09 15:55:42,688 INFO L226 Difference]: Without dead ends: 23184 [2020-11-09 15:55:42,689 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 15:55:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-11-09 15:55:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-11-09 15:55:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-11-09 15:55:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-11-09 15:55:44,380 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-11-09 15:55:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:44,380 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-11-09 15:55:44,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:55:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-11-09 15:55:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:55:44,381 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:44,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:44,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-09 15:55:44,381 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:44,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1086714792, now seen corresponding path program 1 times [2020-11-09 15:55:44,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:44,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762967503] [2020-11-09 15:55:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:44,675 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 15:55:44,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762967503] [2020-11-09 15:55:44,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:55:44,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:55:44,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2143649470] [2020-11-09 15:55:44,676 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:44,677 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:44,678 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:55:44,678 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:44,679 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:55:44,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:55:44,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:44,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:55:44,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:55:44,681 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-11-09 15:55:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:45,016 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-11-09 15:55:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:55:45,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:55:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:45,323 INFO L225 Difference]: With dead ends: 24543 [2020-11-09 15:55:45,323 INFO L226 Difference]: Without dead ends: 24543 [2020-11-09 15:55:45,324 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 15:55:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-11-09 15:55:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-11-09 15:55:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-11-09 15:55:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-11-09 15:55:46,693 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-11-09 15:55:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:46,694 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-11-09 15:55:46,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:55:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-11-09 15:55:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:55:46,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:46,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:46,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-09 15:55:46,695 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:46,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:46,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1986019559, now seen corresponding path program 1 times [2020-11-09 15:55:46,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:46,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949864391] [2020-11-09 15:55:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:46,728 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 15:55:46,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949864391] [2020-11-09 15:55:46,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138001511] [2020-11-09 15:55:46,729 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 15:55:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:55:46,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:55:46,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:55:47,068 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 15:55:47,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:55:47,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-09 15:55:47,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1706407111] [2020-11-09 15:55:47,069 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:55:47,072 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:55:47,076 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-11-09 15:55:47,076 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:55:47,131 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 15:55:47,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:55:47,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:55:47,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:55:47,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 15:55:47,133 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-11-09 15:55:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:55:47,448 INFO L93 Difference]: Finished difference Result 23573 states and 96247 transitions. [2020-11-09 15:55:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 15:55:47,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-09 15:55:47,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:55:47,736 INFO L225 Difference]: With dead ends: 23573 [2020-11-09 15:55:47,739 INFO L226 Difference]: Without dead ends: 23493 [2020-11-09 15:55:47,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:55:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2020-11-09 15:55:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 23493. [2020-11-09 15:55:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23493 states. [2020-11-09 15:55:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23493 states to 23493 states and 95999 transitions. [2020-11-09 15:55:48,918 INFO L78 Accepts]: Start accepts. Automaton has 23493 states and 95999 transitions. Word has length 16 [2020-11-09 15:55:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:55:48,918 INFO L481 AbstractCegarLoop]: Abstraction has 23493 states and 95999 transitions. [2020-11-09 15:55:48,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:55:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 23493 states and 95999 transitions. [2020-11-09 15:55:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-09 15:55:48,926 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:55:48,926 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:55:49,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 15:55:49,142 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:55:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:55:49,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1007891007, now seen corresponding path program 1 times [2020-11-09 15:55:49,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:55:49,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605378359] [2020-11-09 15:55:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:55:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:49,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:55:49,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:55:49,179 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:55:49,179 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:55:49,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-09 15:55:49,179 WARN L386 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:55:49,180 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-11-09 15:55:49,190 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,190 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,190 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,190 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,191 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,191 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,191 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,192 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,195 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,195 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,195 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,195 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,195 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,195 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,196 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,196 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,196 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,196 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,196 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,196 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,196 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,196 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,197 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,198 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,198 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,198 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,198 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,198 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,198 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,198 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,198 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,199 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,199 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,200 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,201 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,201 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,201 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,201 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,201 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,201 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,201 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,201 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,202 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,205 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,205 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,205 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,205 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,210 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,210 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,210 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,210 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,210 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,211 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,212 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,212 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,212 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,212 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,213 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,213 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,213 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,213 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,214 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,215 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,215 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,215 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,215 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,215 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,218 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,218 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,218 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,218 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,218 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:55:49,223 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2020-11-09 15:55:49,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:55:49,225 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:55:49,225 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:55:49,225 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:55:49,225 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:55:49,225 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:55:49,225 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:55:49,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:55:49,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:55:49,229 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:55:49,229 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 115 transitions, 308 flow [2020-11-09 15:55:49,229 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 115 transitions, 308 flow [2020-11-09 15:55:49,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 308 flow [2020-11-09 15:55:49,843 INFO L129 PetriNetUnfolder]: 463/2615 cut-off events. [2020-11-09 15:55:49,843 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-11-09 15:55:49,854 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 15:55:49,902 INFO L116 LiptonReduction]: Number of co-enabled transitions 3960 [2020-11-09 15:55:51,063 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-09 15:55:52,342 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 15:55:52,462 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-09 15:55:52,580 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 15:55:52,853 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-11-09 15:55:53,346 WARN L194 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-11-09 15:55:53,633 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-11-09 15:55:54,021 WARN L194 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-11-09 15:55:54,168 WARN L194 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:55:54,528 WARN L194 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-11-09 15:55:54,701 WARN L194 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:55:54,706 INFO L131 LiptonReduction]: Checked pairs total: 14715 [2020-11-09 15:55:54,706 INFO L133 LiptonReduction]: Total number of compositions: 88 [2020-11-09 15:55:54,707 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-11-09 15:56:23,556 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-11-09 15:56:23,557 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-11-09 15:56:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 15:56:23,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:23,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 15:56:23,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:23,558 INFO L82 PathProgramCache]: Analyzing trace with hash 39516231, now seen corresponding path program 1 times [2020-11-09 15:56:23,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:23,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376481169] [2020-11-09 15:56:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:23,592 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 15:56:23,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376481169] [2020-11-09 15:56:23,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:56:23,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:56:23,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [584923493] [2020-11-09 15:56:23,593 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:56:23,594 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:56:23,594 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 15:56:23,594 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:56:23,595 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:56:23,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:56:23,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:56:23,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:56:23,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:56:23,596 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-11-09 15:56:25,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:56:25,639 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-11-09 15:56:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:56:25,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 15:56:25,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:56:27,087 INFO L225 Difference]: With dead ends: 127122 [2020-11-09 15:56:27,087 INFO L226 Difference]: Without dead ends: 111496 [2020-11-09 15:56:27,088 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 15:56:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-11-09 15:56:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-11-09 15:56:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-11-09 15:56:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-11-09 15:56:35,565 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-11-09 15:56:35,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:56:35,565 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-11-09 15:56:35,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:56:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-11-09 15:56:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:56:35,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:35,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:56:35,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-09 15:56:35,570 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:35,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1282833239, now seen corresponding path program 1 times [2020-11-09 15:56:35,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:35,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994783435] [2020-11-09 15:56:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:35,612 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 15:56:35,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994783435] [2020-11-09 15:56:35,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:56:35,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:56:35,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [976893134] [2020-11-09 15:56:35,613 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:56:35,614 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:56:35,615 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:56:35,615 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:56:35,616 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:56:35,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:56:35,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:56:35,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:56:35,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:56:35,618 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-11-09 15:56:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:56:37,739 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-11-09 15:56:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:56:37,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:56:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:56:38,525 INFO L225 Difference]: With dead ends: 120747 [2020-11-09 15:56:38,525 INFO L226 Difference]: Without dead ends: 120747 [2020-11-09 15:56:38,526 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 15:56:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-11-09 15:56:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-11-09 15:56:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-11-09 15:56:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-11-09 15:56:46,941 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-11-09 15:56:46,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:56:46,941 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-11-09 15:56:46,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:56:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-11-09 15:56:46,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:56:46,955 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:46,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:56:46,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-09 15:56:46,956 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:46,956 INFO L82 PathProgramCache]: Analyzing trace with hash -277261200, now seen corresponding path program 1 times [2020-11-09 15:56:46,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:46,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808121988] [2020-11-09 15:56:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:47,029 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 15:56:47,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808121988] [2020-11-09 15:56:47,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910082282] [2020-11-09 15:56:47,030 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 15:56:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:47,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:56:47,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:56:47,136 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 15:56:47,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:56:47,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-11-09 15:56:47,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [445693429] [2020-11-09 15:56:47,137 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:56:47,139 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:56:47,141 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-11-09 15:56:47,142 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:56:47,171 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:56:47,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:56:47,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:56:47,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:56:47,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:56:47,173 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 5 states. [2020-11-09 15:56:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:56:49,327 INFO L93 Difference]: Finished difference Result 112372 states and 511618 transitions. [2020-11-09 15:56:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:56:49,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-09 15:56:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:56:50,496 INFO L225 Difference]: With dead ends: 112372 [2020-11-09 15:56:50,497 INFO L226 Difference]: Without dead ends: 112372 [2020-11-09 15:56:50,499 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 15:56:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112372 states. [2020-11-09 15:56:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112372 to 109282. [2020-11-09 15:56:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109282 states. [2020-11-09 15:56:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109282 states to 109282 states and 500942 transitions. [2020-11-09 15:56:59,570 INFO L78 Accepts]: Start accepts. Automaton has 109282 states and 500942 transitions. Word has length 16 [2020-11-09 15:56:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:56:59,570 INFO L481 AbstractCegarLoop]: Abstraction has 109282 states and 500942 transitions. [2020-11-09 15:56:59,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:56:59,570 INFO L276 IsEmpty]: Start isEmpty. Operand 109282 states and 500942 transitions. [2020-11-09 15:56:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-09 15:56:59,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:59,625 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:56:59,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:56:59,843 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:59,844 INFO L82 PathProgramCache]: Analyzing trace with hash -559415121, now seen corresponding path program 1 times [2020-11-09 15:56:59,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:59,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393823808] [2020-11-09 15:56:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:56:59,860 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:56:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 15:56:59,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 15:56:59,880 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 15:56:59,881 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 15:56:59,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-09 15:56:59,881 WARN L386 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 15:56:59,881 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-11-09 15:56:59,893 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,893 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,893 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,893 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,893 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,893 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,893 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,893 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,895 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,896 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,896 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,896 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,896 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,896 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,896 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,896 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,896 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,897 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,897 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,897 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,897 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,897 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,897 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,898 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,898 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,898 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,898 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,898 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,898 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,898 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,898 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,899 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,899 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,899 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,899 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,899 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,899 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,899 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,899 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,900 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,900 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,900 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,900 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,900 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,901 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,902 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,903 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,903 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,903 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,903 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,903 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,903 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,903 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,903 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,904 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,904 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,904 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,904 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,904 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,904 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,904 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,904 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,905 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,905 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,905 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,905 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,905 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,906 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,906 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,906 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,907 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,908 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,908 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,908 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,908 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,909 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,909 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,909 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,909 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,909 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,911 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,911 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,911 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,911 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,911 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,912 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,912 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,912 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,912 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,913 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,914 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,914 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,914 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,914 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,914 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,915 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,915 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,915 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,915 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,916 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:56:59,921 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2020-11-09 15:56:59,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:56:59,922 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:56:59,922 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:56:59,922 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:56:59,922 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:56:59,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:56:59,922 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:56:59,923 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:56:59,923 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:56:59,924 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:56:59,924 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 122 transitions, 342 flow [2020-11-09 15:56:59,924 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 122 transitions, 342 flow [2020-11-09 15:56:59,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 342 flow [2020-11-09 15:57:01,169 INFO L129 PetriNetUnfolder]: 977/5190 cut-off events. [2020-11-09 15:57:01,169 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-11-09 15:57:01,188 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 15:57:01,276 INFO L116 LiptonReduction]: Number of co-enabled transitions 4900 [2020-11-09 15:57:04,272 WARN L194 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 15:57:04,575 WARN L194 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-11-09 15:57:04,851 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-09 15:57:05,037 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-09 15:57:05,847 WARN L194 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 15:57:06,014 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 15:57:06,274 WARN L194 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-11-09 15:57:06,416 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 15:57:06,424 INFO L131 LiptonReduction]: Checked pairs total: 19420 [2020-11-09 15:57:06,424 INFO L133 LiptonReduction]: Total number of compositions: 92 [2020-11-09 15:57:06,425 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-11-09 15:58:59,246 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-09 15:58:59,253 WARN L250 ceAbstractionStarter]: Timeout [2020-11-09 15:58:59,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:58:59 BasicIcfg [2020-11-09 15:58:59,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:58:59,255 INFO L168 Benchmark]: Toolchain (without parser) took 230543.07 ms. Allocated memory was 153.1 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 126.5 MB in the beginning and 4.8 GB in the end (delta: -4.7 GB). Peak memory consumption was 3.6 GB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,256 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 153.1 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:58:59,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.08 ms. Allocated memory is still 153.1 MB. Free memory was 125.9 MB in the beginning and 133.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 153.1 MB. Free memory was 133.4 MB in the beginning and 131.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,257 INFO L168 Benchmark]: Boogie Preprocessor took 30.82 ms. Allocated memory is still 153.1 MB. Free memory was 131.3 MB in the beginning and 129.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,258 INFO L168 Benchmark]: RCFGBuilder took 631.39 ms. Allocated memory is still 153.1 MB. Free memory was 129.7 MB in the beginning and 107.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,258 INFO L168 Benchmark]: TraceAbstraction took 229059.34 ms. Allocated memory was 153.1 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 107.2 MB in the beginning and 4.8 GB in the end (delta: -4.7 GB). Peak memory consumption was 3.6 GB. Max. memory is 8.0 GB. [2020-11-09 15:58:59,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 153.1 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 737.08 ms. Allocated memory is still 153.1 MB. Free memory was 125.9 MB in the beginning and 133.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 153.1 MB. Free memory was 133.4 MB in the beginning and 131.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.82 ms. Allocated memory is still 153.1 MB. Free memory was 131.3 MB in the beginning and 129.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 631.39 ms. Allocated memory is still 153.1 MB. Free memory was 129.7 MB in the beginning and 107.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 229059.34 ms. Allocated memory was 153.1 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 107.2 MB in the beginning and 4.8 GB in the end (delta: -4.7 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: 6.1s, 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: 4.9s, 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: 4.4s, 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: 5.1s, 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: 5.1s, 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: 5.4s, 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: 6.5s, 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 210213 states. Currently 33215 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 228.7s, OverallIterations: 20, TraceHistogramMax: 7, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 182.1s, HoareTripleCheckerStatistics: 488 SDtfs, 569 SDslu, 595 SDs, 0 SdLazy, 242 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 62 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s 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: 31.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 8848 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s 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