/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:26:18,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:26:18,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:26:18,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:26:18,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:26:18,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:26:18,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:26:18,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:26:18,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:26:18,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:26:18,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:26:18,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:26:18,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:26:18,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:26:18,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:26:18,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:26:18,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:26:18,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:26:18,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:26:18,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:26:18,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:26:18,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:26:18,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:26:18,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:26:18,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:26:18,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:26:18,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:26:18,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:26:18,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:26:18,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:26:18,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:26:18,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:26:18,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:26:18,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:26:18,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:26:18,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:26:18,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:26:18,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:26:18,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:26:18,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:26:18,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:26:18,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 12:26:18,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:26:18,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:26:18,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:26:18,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:26:18,531 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:26:18,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:26:18,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:26:18,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:26:18,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:26:18,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:26:18,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:26:18,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:26:18,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:26:18,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:26:18,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:26:18,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:26:18,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:26:18,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:26:18,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:26:18,534 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:26:18,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:26:18,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:26:18,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:26:18,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:26:18,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:26:18,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:26:18,776 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:26:18,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-06-10 12:26:18,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a3cc95fb/cbf5559e7cfa4788b7bfd94222744388/FLAGed56bdba6 [2021-06-10 12:26:19,203 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:26:19,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-06-10 12:26:19,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a3cc95fb/cbf5559e7cfa4788b7bfd94222744388/FLAGed56bdba6 [2021-06-10 12:26:19,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a3cc95fb/cbf5559e7cfa4788b7bfd94222744388 [2021-06-10 12:26:19,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:26:19,225 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:26:19,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:26:19,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:26:19,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:26:19,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c05c7db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19, skipping insertion in model container [2021-06-10 12:26:19,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:26:19,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:26:19,363 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i[949,962] [2021-06-10 12:26:19,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:26:19,512 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:26:19,521 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i[949,962] [2021-06-10 12:26:19,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:26:19,594 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:26:19,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19 WrapperNode [2021-06-10 12:26:19,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:26:19,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:26:19,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:26:19,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:26:19,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:26:19,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:26:19,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:26:19,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:26:19,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (1/1) ... [2021-06-10 12:26:19,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:26:19,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:26:19,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:26:19,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:26:19,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (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 [2021-06-10 12:26:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:26:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:26:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:26:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:26:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:26:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:26:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:26:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:26:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:26:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:26:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:26:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:26:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:26:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:26:19,727 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:26:19,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:26:19,990 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:26:19,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:26:19 BoogieIcfgContainer [2021-06-10 12:26:19,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:26:19,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:26:19,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:26:19,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:26:19,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:26:19" (1/3) ... [2021-06-10 12:26:19,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343b369d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:26:19, skipping insertion in model container [2021-06-10 12:26:19,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:19" (2/3) ... [2021-06-10 12:26:19,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343b369d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:26:19, skipping insertion in model container [2021-06-10 12:26:19,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:26:19" (3/3) ... [2021-06-10 12:26:19,996 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2021-06-10 12:26:19,999 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:26:20,002 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:26:20,002 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:26:20,021 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,022 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,022 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,022 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,022 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,027 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,027 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,027 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,027 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,028 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,028 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,028 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,028 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,031 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,031 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,044 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,044 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:20,049 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:26:20,060 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:26:20,086 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:26:20,087 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:26:20,087 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:26:20,087 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:26:20,087 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:26:20,087 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:26:20,087 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:26:20,087 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:26:20,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 12:26:20,114 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-06-10 12:26:20,115 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:26:20,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 12:26:20,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 12:26:20,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-06-10 12:26:20,130 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-06-10 12:26:20,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:26:20,130 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:20,131 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:20,131 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1730311568, now seen corresponding path program 1 times [2021-06-10 12:26:20,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:20,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81635327] [2021-06-10 12:26:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:20,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:20,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:20,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:20,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:20,339 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:20,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:20,356 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:20,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:20,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:20,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:20,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:20,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:20,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:20,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:20,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81635327] [2021-06-10 12:26:20,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:20,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:20,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149731553] [2021-06-10 12:26:20,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:20,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:20,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:20,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:20,431 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-06-10 12:26:20,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:20,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:20,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-06-10 12:26:20,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:20,902 INFO L129 PetriNetUnfolder]: 485/1065 cut-off events. [2021-06-10 12:26:20,906 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:26:20,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 1065 events. 485/1065 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6444 event pairs, 19 based on Foata normal form. 52/1086 useless extension candidates. Maximal degree in co-relation 1839. Up to 212 conditions per place. [2021-06-10 12:26:20,916 INFO L132 encePairwiseOnDemand]: 61/74 looper letters, 21 selfloop transitions, 8 changer transitions 56/127 dead transitions. [2021-06-10 12:26:20,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 433 flow [2021-06-10 12:26:20,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 793 transitions. [2021-06-10 12:26:20,936 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8243243243243243 [2021-06-10 12:26:20,936 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 793 transitions. [2021-06-10 12:26:20,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 793 transitions. [2021-06-10 12:26:20,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:20,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 793 transitions. [2021-06-10 12:26:20,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.0) internal successors, (793), 13 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:20,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:20,954 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:20,955 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 13 states and 793 transitions. [2021-06-10 12:26:20,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 433 flow [2021-06-10 12:26:20,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 127 transitions, 430 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:26:20,961 INFO L241 Difference]: Finished difference. Result has 89 places, 63 transitions, 226 flow [2021-06-10 12:26:20,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=226, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2021-06-10 12:26:20,963 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-06-10 12:26:20,963 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 226 flow [2021-06-10 12:26:20,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:20,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:20,963 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:20,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:26:20,963 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:20,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2044425375, now seen corresponding path program 1 times [2021-06-10 12:26:20,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:20,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720783883] [2021-06-10 12:26:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:21,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:21,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:21,020 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:21,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:21,036 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:21,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:21,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:21,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:21,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:21,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720783883] [2021-06-10 12:26:21,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:21,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:21,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900420594] [2021-06-10 12:26:21,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:21,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:21,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:21,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:21,102 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-06-10 12:26:21,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:21,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-06-10 12:26:21,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:21,386 INFO L129 PetriNetUnfolder]: 268/802 cut-off events. [2021-06-10 12:26:21,387 INFO L130 PetriNetUnfolder]: For 1700/2238 co-relation queries the response was YES. [2021-06-10 12:26:21,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 802 events. 268/802 cut-off events. For 1700/2238 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5265 event pairs, 22 based on Foata normal form. 21/807 useless extension candidates. Maximal degree in co-relation 2517. Up to 181 conditions per place. [2021-06-10 12:26:21,393 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 25 selfloop transitions, 11 changer transitions 52/130 dead transitions. [2021-06-10 12:26:21,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 914 flow [2021-06-10 12:26:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:21,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 780 transitions. [2021-06-10 12:26:21,395 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2021-06-10 12:26:21,395 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 780 transitions. [2021-06-10 12:26:21,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 780 transitions. [2021-06-10 12:26:21,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:21,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 780 transitions. [2021-06-10 12:26:21,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,399 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,399 INFO L185 Difference]: Start difference. First operand has 89 places, 63 transitions, 226 flow. Second operand 13 states and 780 transitions. [2021-06-10 12:26:21,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 914 flow [2021-06-10 12:26:21,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 886 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-10 12:26:21,408 INFO L241 Difference]: Finished difference. Result has 100 places, 70 transitions, 367 flow [2021-06-10 12:26:21,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=367, PETRI_PLACES=100, PETRI_TRANSITIONS=70} [2021-06-10 12:26:21,408 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 32 predicate places. [2021-06-10 12:26:21,408 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 70 transitions, 367 flow [2021-06-10 12:26:21,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,409 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:21,409 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:21,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:26:21,410 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:21,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:21,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1602960592, now seen corresponding path program 1 times [2021-06-10 12:26:21,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:21,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075343862] [2021-06-10 12:26:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:21,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:21,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:21,460 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:21,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:21,467 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:21,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:21,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:21,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:21,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:21,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075343862] [2021-06-10 12:26:21,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:21,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:21,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278435269] [2021-06-10 12:26:21,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:21,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:21,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:21,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:21,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-06-10 12:26:21,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 70 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:21,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-06-10 12:26:21,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:21,692 INFO L129 PetriNetUnfolder]: 177/593 cut-off events. [2021-06-10 12:26:21,692 INFO L130 PetriNetUnfolder]: For 2771/3341 co-relation queries the response was YES. [2021-06-10 12:26:21,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2357 conditions, 593 events. 177/593 cut-off events. For 2771/3341 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3660 event pairs, 0 based on Foata normal form. 21/605 useless extension candidates. Maximal degree in co-relation 2303. Up to 131 conditions per place. [2021-06-10 12:26:21,697 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 27 selfloop transitions, 18 changer transitions 52/139 dead transitions. [2021-06-10 12:26:21,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 139 transitions, 1290 flow [2021-06-10 12:26:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 774 transitions. [2021-06-10 12:26:21,699 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8045738045738046 [2021-06-10 12:26:21,699 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 774 transitions. [2021-06-10 12:26:21,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 774 transitions. [2021-06-10 12:26:21,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:21,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 774 transitions. [2021-06-10 12:26:21,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.53846153846154) internal successors, (774), 13 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,702 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,702 INFO L185 Difference]: Start difference. First operand has 100 places, 70 transitions, 367 flow. Second operand 13 states and 774 transitions. [2021-06-10 12:26:21,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 139 transitions, 1290 flow [2021-06-10 12:26:21,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 1212 flow, removed 36 selfloop flow, removed 4 redundant places. [2021-06-10 12:26:21,711 INFO L241 Difference]: Finished difference. Result has 111 places, 79 transitions, 569 flow [2021-06-10 12:26:21,711 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=569, PETRI_PLACES=111, PETRI_TRANSITIONS=79} [2021-06-10 12:26:21,711 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 43 predicate places. [2021-06-10 12:26:21,711 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 569 flow [2021-06-10 12:26:21,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,711 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:21,711 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:21,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:26:21,712 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:21,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2114944062, now seen corresponding path program 1 times [2021-06-10 12:26:21,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:21,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993944907] [2021-06-10 12:26:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:21,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:21,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:21,752 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:21,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:21,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:21,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:21,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:21,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993944907] [2021-06-10 12:26:21,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:21,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:26:21,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559429076] [2021-06-10 12:26:21,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:26:21,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:21,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:26:21,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:26:21,781 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 74 [2021-06-10 12:26:21,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 569 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:21,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 74 [2021-06-10 12:26:21,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:21,896 INFO L129 PetriNetUnfolder]: 79/294 cut-off events. [2021-06-10 12:26:21,896 INFO L130 PetriNetUnfolder]: For 2708/3144 co-relation queries the response was YES. [2021-06-10 12:26:21,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 294 events. 79/294 cut-off events. For 2708/3144 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1362 event pairs, 10 based on Foata normal form. 41/327 useless extension candidates. Maximal degree in co-relation 1365. Up to 80 conditions per place. [2021-06-10 12:26:21,899 INFO L132 encePairwiseOnDemand]: 67/74 looper letters, 14 selfloop transitions, 9 changer transitions 22/107 dead transitions. [2021-06-10 12:26:21,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 1019 flow [2021-06-10 12:26:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:26:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:26:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 581 transitions. [2021-06-10 12:26:21,900 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8723723723723724 [2021-06-10 12:26:21,900 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 581 transitions. [2021-06-10 12:26:21,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 581 transitions. [2021-06-10 12:26:21,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:21,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 581 transitions. [2021-06-10 12:26:21,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.55555555555556) internal successors, (581), 9 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,903 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,903 INFO L185 Difference]: Start difference. First operand has 111 places, 79 transitions, 569 flow. Second operand 9 states and 581 transitions. [2021-06-10 12:26:21,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 1019 flow [2021-06-10 12:26:21,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 947 flow, removed 33 selfloop flow, removed 10 redundant places. [2021-06-10 12:26:21,910 INFO L241 Difference]: Finished difference. Result has 107 places, 85 transitions, 680 flow [2021-06-10 12:26:21,910 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=680, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2021-06-10 12:26:21,910 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2021-06-10 12:26:21,910 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 680 flow [2021-06-10 12:26:21,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,911 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:21,911 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:21,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:26:21,911 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:21,911 INFO L82 PathProgramCache]: Analyzing trace with hash -149614536, now seen corresponding path program 1 times [2021-06-10 12:26:21,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:21,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504439198] [2021-06-10 12:26:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:21,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:21,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:21,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:21,945 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:21,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:21,953 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:21,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:21,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:21,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:21,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:21,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:21,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504439198] [2021-06-10 12:26:21,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:21,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:26:21,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057404239] [2021-06-10 12:26:21,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:26:21,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:21,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:26:21,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:26:21,986 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-06-10 12:26:21,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 680 flow. Second operand has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:21,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:21,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-06-10 12:26:21,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:22,103 INFO L129 PetriNetUnfolder]: 100/412 cut-off events. [2021-06-10 12:26:22,103 INFO L130 PetriNetUnfolder]: For 3294/4287 co-relation queries the response was YES. [2021-06-10 12:26:22,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 412 events. 100/412 cut-off events. For 3294/4287 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2312 event pairs, 0 based on Foata normal form. 14/419 useless extension candidates. Maximal degree in co-relation 1972. Up to 106 conditions per place. [2021-06-10 12:26:22,107 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 26 selfloop transitions, 16 changer transitions 41/125 dead transitions. [2021-06-10 12:26:22,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 125 transitions, 1448 flow [2021-06-10 12:26:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:26:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:26:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 478 transitions. [2021-06-10 12:26:22,109 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8074324324324325 [2021-06-10 12:26:22,109 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 478 transitions. [2021-06-10 12:26:22,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 478 transitions. [2021-06-10 12:26:22,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:22,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 478 transitions. [2021-06-10 12:26:22,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,111 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,111 INFO L185 Difference]: Start difference. First operand has 107 places, 85 transitions, 680 flow. Second operand 8 states and 478 transitions. [2021-06-10 12:26:22,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 125 transitions, 1448 flow [2021-06-10 12:26:22,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 125 transitions, 1360 flow, removed 38 selfloop flow, removed 10 redundant places. [2021-06-10 12:26:22,122 INFO L241 Difference]: Finished difference. Result has 102 places, 77 transitions, 549 flow [2021-06-10 12:26:22,123 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=549, PETRI_PLACES=102, PETRI_TRANSITIONS=77} [2021-06-10 12:26:22,123 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 34 predicate places. [2021-06-10 12:26:22,123 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 77 transitions, 549 flow [2021-06-10 12:26:22,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,123 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:22,123 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:22,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:26:22,124 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1134579796, now seen corresponding path program 2 times [2021-06-10 12:26:22,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:22,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348253621] [2021-06-10 12:26:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:22,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:22,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:22,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:22,152 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:22,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:22,164 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:22,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:22,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:22,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:22,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:22,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348253621] [2021-06-10 12:26:22,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:22,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:26:22,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33882283] [2021-06-10 12:26:22,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:26:22,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:22,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:26:22,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:26:22,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-06-10 12:26:22,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 77 transitions, 549 flow. Second operand has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:22,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-06-10 12:26:22,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:22,293 INFO L129 PetriNetUnfolder]: 74/335 cut-off events. [2021-06-10 12:26:22,293 INFO L130 PetriNetUnfolder]: For 3015/3446 co-relation queries the response was YES. [2021-06-10 12:26:22,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 335 events. 74/335 cut-off events. For 3015/3446 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1748 event pairs, 0 based on Foata normal form. 20/350 useless extension candidates. Maximal degree in co-relation 1551. Up to 83 conditions per place. [2021-06-10 12:26:22,295 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 20 selfloop transitions, 13 changer transitions 38/113 dead transitions. [2021-06-10 12:26:22,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 113 transitions, 1236 flow [2021-06-10 12:26:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:26:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:26:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 535 transitions. [2021-06-10 12:26:22,297 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8033033033033034 [2021-06-10 12:26:22,297 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 535 transitions. [2021-06-10 12:26:22,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 535 transitions. [2021-06-10 12:26:22,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:22,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 535 transitions. [2021-06-10 12:26:22,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 59.44444444444444) internal successors, (535), 9 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,299 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,300 INFO L185 Difference]: Start difference. First operand has 102 places, 77 transitions, 549 flow. Second operand 9 states and 535 transitions. [2021-06-10 12:26:22,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 113 transitions, 1236 flow [2021-06-10 12:26:22,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 1131 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-06-10 12:26:22,306 INFO L241 Difference]: Finished difference. Result has 104 places, 70 transitions, 439 flow [2021-06-10 12:26:22,306 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=439, PETRI_PLACES=104, PETRI_TRANSITIONS=70} [2021-06-10 12:26:22,306 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 36 predicate places. [2021-06-10 12:26:22,306 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 70 transitions, 439 flow [2021-06-10 12:26:22,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,306 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:22,306 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:22,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:26:22,307 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:22,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:22,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1709482781, now seen corresponding path program 1 times [2021-06-10 12:26:22,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:22,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468196781] [2021-06-10 12:26:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:22,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:22,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:22,334 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:26:22,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:26:22,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:26:22,350 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:26:22,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:22,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:22,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468196781] [2021-06-10 12:26:22,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:22,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:26:22,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285606349] [2021-06-10 12:26:22,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:26:22,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:22,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:26:22,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:26:22,359 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:26:22,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 70 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:22,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:26:22,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:22,486 INFO L129 PetriNetUnfolder]: 258/701 cut-off events. [2021-06-10 12:26:22,486 INFO L130 PetriNetUnfolder]: For 1716/1818 co-relation queries the response was YES. [2021-06-10 12:26:22,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 701 events. 258/701 cut-off events. For 1716/1818 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4789 event pairs, 34 based on Foata normal form. 13/647 useless extension candidates. Maximal degree in co-relation 1732. Up to 179 conditions per place. [2021-06-10 12:26:22,491 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 24 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2021-06-10 12:26:22,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 581 flow [2021-06-10 12:26:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:26:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:26:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 643 transitions. [2021-06-10 12:26:22,493 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8689189189189189 [2021-06-10 12:26:22,493 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 643 transitions. [2021-06-10 12:26:22,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 643 transitions. [2021-06-10 12:26:22,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:22,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 643 transitions. [2021-06-10 12:26:22,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.3) internal successors, (643), 10 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,496 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,496 INFO L185 Difference]: Start difference. First operand has 104 places, 70 transitions, 439 flow. Second operand 10 states and 643 transitions. [2021-06-10 12:26:22,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 581 flow [2021-06-10 12:26:22,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 529 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-06-10 12:26:22,500 INFO L241 Difference]: Finished difference. Result has 106 places, 85 transitions, 507 flow [2021-06-10 12:26:22,500 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=507, PETRI_PLACES=106, PETRI_TRANSITIONS=85} [2021-06-10 12:26:22,500 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 38 predicate places. [2021-06-10 12:26:22,500 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 85 transitions, 507 flow [2021-06-10 12:26:22,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:22,501 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:22,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:26:22,501 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:22,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1587765752, now seen corresponding path program 1 times [2021-06-10 12:26:22,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:22,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185399820] [2021-06-10 12:26:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:22,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:22,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:22,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:22,531 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:26:22,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:26:22,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:26:22,550 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:26:22,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:22,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:22,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185399820] [2021-06-10 12:26:22,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:22,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:22,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126466574] [2021-06-10 12:26:22,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:22,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:22,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:22,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:22,559 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:26:22,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 85 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:22,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:26:22,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:22,740 INFO L129 PetriNetUnfolder]: 230/681 cut-off events. [2021-06-10 12:26:22,740 INFO L130 PetriNetUnfolder]: For 1819/2272 co-relation queries the response was YES. [2021-06-10 12:26:22,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2370 conditions, 681 events. 230/681 cut-off events. For 1819/2272 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4936 event pairs, 3 based on Foata normal form. 87/716 useless extension candidates. Maximal degree in co-relation 2310. Up to 234 conditions per place. [2021-06-10 12:26:22,745 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 16 selfloop transitions, 32 changer transitions 13/120 dead transitions. [2021-06-10 12:26:22,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 853 flow [2021-06-10 12:26:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 837 transitions. [2021-06-10 12:26:22,747 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8700623700623701 [2021-06-10 12:26:22,747 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 837 transitions. [2021-06-10 12:26:22,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 837 transitions. [2021-06-10 12:26:22,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:22,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 837 transitions. [2021-06-10 12:26:22,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.38461538461539) internal successors, (837), 13 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,751 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,751 INFO L185 Difference]: Start difference. First operand has 106 places, 85 transitions, 507 flow. Second operand 13 states and 837 transitions. [2021-06-10 12:26:22,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 853 flow [2021-06-10 12:26:22,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 120 transitions, 827 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-10 12:26:22,756 INFO L241 Difference]: Finished difference. Result has 118 places, 101 transitions, 684 flow [2021-06-10 12:26:22,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=684, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2021-06-10 12:26:22,756 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 50 predicate places. [2021-06-10 12:26:22,756 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 684 flow [2021-06-10 12:26:22,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,757 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:22,757 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:22,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:26:22,757 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:22,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:22,757 INFO L82 PathProgramCache]: Analyzing trace with hash -2137339483, now seen corresponding path program 1 times [2021-06-10 12:26:22,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:22,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421823026] [2021-06-10 12:26:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:22,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:22,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:22,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:22,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:22,815 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:26:22,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:26:22,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:26:22,836 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:26:22,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:22,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:22,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:22,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421823026] [2021-06-10 12:26:22,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:22,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:26:22,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684538859] [2021-06-10 12:26:22,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:26:22,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:22,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:26:22,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:26:22,845 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:26:22,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 684 flow. Second operand has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:22,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:22,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:26:22,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:23,044 INFO L129 PetriNetUnfolder]: 185/595 cut-off events. [2021-06-10 12:26:23,044 INFO L130 PetriNetUnfolder]: For 2395/3117 co-relation queries the response was YES. [2021-06-10 12:26:23,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 595 events. 185/595 cut-off events. For 2395/3117 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4439 event pairs, 0 based on Foata normal form. 87/630 useless extension candidates. Maximal degree in co-relation 2336. Up to 182 conditions per place. [2021-06-10 12:26:23,048 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2021-06-10 12:26:23,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 107 transitions, 839 flow [2021-06-10 12:26:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-10 12:26:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-10 12:26:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 947 transitions. [2021-06-10 12:26:23,050 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8531531531531531 [2021-06-10 12:26:23,050 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 947 transitions. [2021-06-10 12:26:23,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 947 transitions. [2021-06-10 12:26:23,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:23,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 947 transitions. [2021-06-10 12:26:23,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 63.13333333333333) internal successors, (947), 15 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:23,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:23,054 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:23,054 INFO L185 Difference]: Start difference. First operand has 118 places, 101 transitions, 684 flow. Second operand 15 states and 947 transitions. [2021-06-10 12:26:23,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 107 transitions, 839 flow [2021-06-10 12:26:23,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 666 flow, removed 61 selfloop flow, removed 17 redundant places. [2021-06-10 12:26:23,062 INFO L241 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-06-10 12:26:23,063 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-06-10 12:26:23,063 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2021-06-10 12:26:23,063 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-06-10 12:26:23,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:23,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 12:26:23,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:26:23 BasicIcfg [2021-06-10 12:26:23,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:26:23,067 INFO L168 Benchmark]: Toolchain (without parser) took 3841.48 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 308.8 MB in the beginning and 263.4 MB in the end (delta: 45.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:23,067 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 346.0 MB. Free memory was 327.0 MB in the beginning and 326.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:26:23,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.54 ms. Allocated memory is still 346.0 MB. Free memory was 308.6 MB in the beginning and 309.0 MB in the end (delta: -411.2 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:23,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.59 ms. Allocated memory is still 346.0 MB. Free memory was 309.0 MB in the beginning and 306.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:23,068 INFO L168 Benchmark]: Boogie Preprocessor took 25.77 ms. Allocated memory is still 346.0 MB. Free memory was 306.9 MB in the beginning and 305.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:23,068 INFO L168 Benchmark]: RCFGBuilder took 322.54 ms. Allocated memory is still 346.0 MB. Free memory was 305.8 MB in the beginning and 281.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:23,068 INFO L168 Benchmark]: TraceAbstraction took 3074.15 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 281.7 MB in the beginning and 263.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 90.6 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:23,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 346.0 MB. Free memory was 327.0 MB in the beginning and 326.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 365.54 ms. Allocated memory is still 346.0 MB. Free memory was 308.6 MB in the beginning and 309.0 MB in the end (delta: -411.2 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.59 ms. Allocated memory is still 346.0 MB. Free memory was 309.0 MB in the beginning and 306.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.77 ms. Allocated memory is still 346.0 MB. Free memory was 306.9 MB in the beginning and 305.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 322.54 ms. Allocated memory is still 346.0 MB. Free memory was 305.8 MB in the beginning and 281.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3074.15 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 281.7 MB in the beginning and 263.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 90.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2979.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1998.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 157 SDtfs, 357 SDslu, 547 SDs, 0 SdLazy, 493 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 333.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1058.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=684occurred in iteration=8, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.9ms SsaConstructionTime, 110.7ms SatisfiabilityAnalysisTime, 672.5ms InterpolantComputationTime, 400 NumberOfCodeBlocks, 400 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 391 ConstructedInterpolants, 0 QuantifiedInterpolants, 1495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...