/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:57:00,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:57:00,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:57:00,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:57:00,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:57:00,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:57:00,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:57:00,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:57:00,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:57:00,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:57:00,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:57:00,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:57:00,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:57:00,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:57:00,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:57:00,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:57:00,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:57:00,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:57:00,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:57:00,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:57:00,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:57:00,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:57:00,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:57:00,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:57:00,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:57:00,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 19:57:00,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 19:57:00,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 19:57:00,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 19:57:00,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 19:57:00,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 19:57:00,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 19:57:00,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 19:57:00,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:57:00,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:57:00,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:57:00,487 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-SemanticLbe.epf [2021-03-24 19:57:00,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:57:00,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:57:00,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:57:00,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:57:00,519 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:57:00,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:57:00,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:57:00,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:57:00,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:57:00,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:57:00,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:57:00,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:57:00,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:57:00,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:57:00,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:57:00,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:57:00,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:57:00,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:57:00,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:57:00,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:57:00,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:57:00,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:57:00,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:57:00,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:57:00,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:57:00,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:57:00,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:57:00,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:57:00,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:57:00,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:57:00,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:57:00,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:57:00,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:57:00,813 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:57:00,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt.i [2021-03-24 19:57:00,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb838f22/8f8498e8c0b046b786da1e6c9bd7e755/FLAG8a1f24b4d [2021-03-24 19:57:01,456 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:57:01,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_power.opt.i [2021-03-24 19:57:01,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb838f22/8f8498e8c0b046b786da1e6c9bd7e755/FLAG8a1f24b4d [2021-03-24 19:57:01,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb838f22/8f8498e8c0b046b786da1e6c9bd7e755 [2021-03-24 19:57:01,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:57:01,870 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:57:01,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:57:01,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:57:01,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:57:01,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:57:01" (1/1) ... [2021-03-24 19:57:01,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6d1ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:01, skipping insertion in model container [2021-03-24 19:57:01,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:57:01" (1/1) ... [2021-03-24 19:57:01,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:57:01,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:57:02,083 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/safe029_power.opt.i[951,964] [2021-03-24 19:57:02,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:57:02,295 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:57:02,307 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/safe029_power.opt.i[951,964] [2021-03-24 19:57:02,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:57:02,437 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:57:02,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02 WrapperNode [2021-03-24 19:57:02,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:57:02,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:57:02,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:57:02,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:57:02,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:57:02,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:57:02,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:57:02,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:57:02,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (1/1) ... [2021-03-24 19:57:02,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:57:02,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:57:02,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:57:02,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:57:02,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (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 [2021-03-24 19:57:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:57:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:57:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:57:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:57:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:57:02,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:57:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:57:02,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:57:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:57:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:57:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:57:02,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:57:02,679 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:57:04,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:57:04,233 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 19:57:04,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:57:04 BoogieIcfgContainer [2021-03-24 19:57:04,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:57:04,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:57:04,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:57:04,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:57:04,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:57:01" (1/3) ... [2021-03-24 19:57:04,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5317c205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:57:04, skipping insertion in model container [2021-03-24 19:57:04,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:02" (2/3) ... [2021-03-24 19:57:04,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5317c205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:57:04, skipping insertion in model container [2021-03-24 19:57:04,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:57:04" (3/3) ... [2021-03-24 19:57:04,243 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_power.opt.i [2021-03-24 19:57:04,249 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:57:04,252 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 19:57:04,253 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:57:04,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,283 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,283 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,296 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,296 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,298 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,298 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,298 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,299 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,299 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,299 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,300 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,300 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:04,301 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:57:04,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 19:57:04,345 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:57:04,345 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:57:04,346 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:57:04,346 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:57:04,346 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:57:04,346 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:57:04,346 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:57:04,347 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:57:04,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 168 flow [2021-03-24 19:57:04,394 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-24 19:57:04,394 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:04,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-24 19:57:04,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 168 flow [2021-03-24 19:57:04,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 160 flow [2021-03-24 19:57:04,435 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:57:04,446 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-24 19:57:04,448 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-24 19:57:04,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 77 transitions, 160 flow [2021-03-24 19:57:04,475 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-24 19:57:04,477 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:04,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-24 19:57:04,481 INFO L142 LiptonReduction]: Number of co-enabled transitions 918 [2021-03-24 19:57:05,767 WARN L205 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 184 [2021-03-24 19:57:06,047 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2021-03-24 19:57:07,490 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 308 DAG size of output: 264 [2021-03-24 19:57:08,118 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2021-03-24 19:57:08,755 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 19:57:09,132 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-24 19:57:09,236 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-24 19:57:10,500 WARN L205 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2021-03-24 19:57:10,850 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-03-24 19:57:11,496 WARN L205 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-24 19:57:12,154 WARN L205 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-24 19:57:12,460 INFO L154 LiptonReduction]: Checked pairs total: 1657 [2021-03-24 19:57:12,461 INFO L156 LiptonReduction]: Total number of compositions: 53 [2021-03-24 19:57:12,463 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8029 [2021-03-24 19:57:12,470 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-24 19:57:12,470 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:12,470 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:12,471 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:12,471 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:12,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:12,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1463710772, now seen corresponding path program 1 times [2021-03-24 19:57:12,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:12,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554580591] [2021-03-24 19:57:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:12,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:12,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:12,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:12,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:12,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554580591] [2021-03-24 19:57:12,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:12,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:57:12,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447714783] [2021-03-24 19:57:12,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:57:12,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:12,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:57:12,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:57:12,735 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 132 [2021-03-24 19:57:12,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2021-03-24 19:57:12,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:12,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 132 [2021-03-24 19:57:12,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:12,815 INFO L129 PetriNetUnfolder]: 23/91 cut-off events. [2021-03-24 19:57:12,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:12,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 91 events. 23/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 332 event pairs, 9 based on Foata normal form. 6/90 useless extension candidates. Maximal degree in co-relation 130. Up to 37 conditions per place. [2021-03-24 19:57:12,818 INFO L132 encePairwiseOnDemand]: 128/132 looper letters, 7 selfloop transitions, 2 changer transitions 5/32 dead transitions. [2021-03-24 19:57:12,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 92 flow [2021-03-24 19:57:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:57:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:57:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-03-24 19:57:12,835 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2021-03-24 19:57:12,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-03-24 19:57:12,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-03-24 19:57:12,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:12,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-03-24 19:57:12,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2021-03-24 19:57:12,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2021-03-24 19:57:12,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2021-03-24 19:57:12,856 INFO L185 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 347 transitions. [2021-03-24 19:57:12,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 92 flow [2021-03-24 19:57:12,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:12,859 INFO L241 Difference]: Finished difference. Result has 35 places, 24 transitions, 56 flow [2021-03-24 19:57:12,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2021-03-24 19:57:12,862 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2021-03-24 19:57:12,862 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 56 flow [2021-03-24 19:57:12,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2021-03-24 19:57:12,862 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:12,862 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:12,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:57:12,863 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:12,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1396965882, now seen corresponding path program 1 times [2021-03-24 19:57:12,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:12,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481287133] [2021-03-24 19:57:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:13,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:13,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:13,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:13,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:13,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:13,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:13,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481287133] [2021-03-24 19:57:13,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:13,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:57:13,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411911635] [2021-03-24 19:57:13,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:57:13,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:13,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:57:13,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:57:13,088 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 132 [2021-03-24 19:57:13,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 56 flow. Second operand has 7 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 states have internal predecessors, (685), 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) [2021-03-24 19:57:13,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:13,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 132 [2021-03-24 19:57:13,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:13,238 INFO L129 PetriNetUnfolder]: 37/110 cut-off events. [2021-03-24 19:57:13,239 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-24 19:57:13,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 110 events. 37/110 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 413 event pairs, 19 based on Foata normal form. 9/116 useless extension candidates. Maximal degree in co-relation 193. Up to 60 conditions per place. [2021-03-24 19:57:13,242 INFO L132 encePairwiseOnDemand]: 124/132 looper letters, 9 selfloop transitions, 7 changer transitions 10/40 dead transitions. [2021-03-24 19:57:13,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 146 flow [2021-03-24 19:57:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:13,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 805 transitions. [2021-03-24 19:57:13,246 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7623106060606061 [2021-03-24 19:57:13,246 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 805 transitions. [2021-03-24 19:57:13,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 805 transitions. [2021-03-24 19:57:13,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:13,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 805 transitions. [2021-03-24 19:57:13,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.625) internal successors, (805), 8 states have internal predecessors, (805), 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) [2021-03-24 19:57:13,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:13,253 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:13,253 INFO L185 Difference]: Start difference. First operand has 35 places, 24 transitions, 56 flow. Second operand 8 states and 805 transitions. [2021-03-24 19:57:13,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 146 flow [2021-03-24 19:57:13,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:13,255 INFO L241 Difference]: Finished difference. Result has 41 places, 28 transitions, 102 flow [2021-03-24 19:57:13,255 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=102, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2021-03-24 19:57:13,258 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2021-03-24 19:57:13,259 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 102 flow [2021-03-24 19:57:13,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 states have internal predecessors, (685), 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) [2021-03-24 19:57:13,259 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:13,259 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:13,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:57:13,264 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1840629926, now seen corresponding path program 1 times [2021-03-24 19:57:13,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:13,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901148819] [2021-03-24 19:57:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:13,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:13,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:13,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:13,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:13,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:13,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901148819] [2021-03-24 19:57:13,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:13,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:57:13,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861707262] [2021-03-24 19:57:13,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:57:13,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:13,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:57:13,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:57:13,373 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 132 [2021-03-24 19:57:13,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 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) [2021-03-24 19:57:13,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:13,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 132 [2021-03-24 19:57:13,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:13,487 INFO L129 PetriNetUnfolder]: 35/100 cut-off events. [2021-03-24 19:57:13,487 INFO L130 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2021-03-24 19:57:13,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 100 events. 35/100 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 323 event pairs, 8 based on Foata normal form. 6/105 useless extension candidates. Maximal degree in co-relation 265. Up to 53 conditions per place. [2021-03-24 19:57:13,489 INFO L132 encePairwiseOnDemand]: 125/132 looper letters, 13 selfloop transitions, 7 changer transitions 6/41 dead transitions. [2021-03-24 19:57:13,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 210 flow [2021-03-24 19:57:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 747 transitions. [2021-03-24 19:57:13,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8084415584415584 [2021-03-24 19:57:13,492 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 747 transitions. [2021-03-24 19:57:13,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 747 transitions. [2021-03-24 19:57:13,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:13,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 747 transitions. [2021-03-24 19:57:13,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 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) [2021-03-24 19:57:13,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 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) [2021-03-24 19:57:13,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 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) [2021-03-24 19:57:13,496 INFO L185 Difference]: Start difference. First operand has 41 places, 28 transitions, 102 flow. Second operand 7 states and 747 transitions. [2021-03-24 19:57:13,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 210 flow [2021-03-24 19:57:13,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 204 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:13,500 INFO L241 Difference]: Finished difference. Result has 46 places, 31 transitions, 140 flow [2021-03-24 19:57:13,500 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2021-03-24 19:57:13,500 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2021-03-24 19:57:13,500 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 140 flow [2021-03-24 19:57:13,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 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) [2021-03-24 19:57:13,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:13,501 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:13,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:57:13,501 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:13,502 INFO L82 PathProgramCache]: Analyzing trace with hash 224713370, now seen corresponding path program 2 times [2021-03-24 19:57:13,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:13,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091643258] [2021-03-24 19:57:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:13,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:13,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:13,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:13,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:13,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:13,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:13,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:13,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091643258] [2021-03-24 19:57:13,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:13,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:57:13,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84174545] [2021-03-24 19:57:13,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:57:13,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:13,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:57:13,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:57:13,664 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 132 [2021-03-24 19:57:13,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 140 flow. Second operand has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 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) [2021-03-24 19:57:13,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:13,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 132 [2021-03-24 19:57:13,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:13,787 INFO L129 PetriNetUnfolder]: 30/90 cut-off events. [2021-03-24 19:57:13,787 INFO L130 PetriNetUnfolder]: For 212/215 co-relation queries the response was YES. [2021-03-24 19:57:13,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 90 events. 30/90 cut-off events. For 212/215 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 277 event pairs, 7 based on Foata normal form. 9/98 useless extension candidates. Maximal degree in co-relation 298. Up to 48 conditions per place. [2021-03-24 19:57:13,790 INFO L132 encePairwiseOnDemand]: 125/132 looper letters, 14 selfloop transitions, 7 changer transitions 5/39 dead transitions. [2021-03-24 19:57:13,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 240 flow [2021-03-24 19:57:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 791 transitions. [2021-03-24 19:57:13,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7490530303030303 [2021-03-24 19:57:13,793 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 791 transitions. [2021-03-24 19:57:13,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 791 transitions. [2021-03-24 19:57:13,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:13,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 791 transitions. [2021-03-24 19:57:13,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.875) internal successors, (791), 8 states have internal predecessors, (791), 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) [2021-03-24 19:57:13,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:13,798 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:13,798 INFO L185 Difference]: Start difference. First operand has 46 places, 31 transitions, 140 flow. Second operand 8 states and 791 transitions. [2021-03-24 19:57:13,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 240 flow [2021-03-24 19:57:13,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 223 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 19:57:13,801 INFO L241 Difference]: Finished difference. Result has 50 places, 31 transitions, 149 flow [2021-03-24 19:57:13,801 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2021-03-24 19:57:13,801 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2021-03-24 19:57:13,802 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 149 flow [2021-03-24 19:57:13,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 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) [2021-03-24 19:57:13,802 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:13,802 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:13,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:57:13,802 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:13,803 INFO L82 PathProgramCache]: Analyzing trace with hash 766458886, now seen corresponding path program 1 times [2021-03-24 19:57:13,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:13,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073950015] [2021-03-24 19:57:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:13,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:13,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:13,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:13,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:13,925 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-24 19:57:13,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-24 19:57:13,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:13,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:13,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:13,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073950015] [2021-03-24 19:57:13,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:13,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:57:13,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010228976] [2021-03-24 19:57:13,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:57:13,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:13,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:57:13,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:57:13,958 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 132 [2021-03-24 19:57:13,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 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) [2021-03-24 19:57:13,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:13,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 132 [2021-03-24 19:57:13,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:14,083 INFO L129 PetriNetUnfolder]: 31/93 cut-off events. [2021-03-24 19:57:14,083 INFO L130 PetriNetUnfolder]: For 224/227 co-relation queries the response was YES. [2021-03-24 19:57:14,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 93 events. 31/93 cut-off events. For 224/227 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 6 based on Foata normal form. 7/99 useless extension candidates. Maximal degree in co-relation 306. Up to 50 conditions per place. [2021-03-24 19:57:14,085 INFO L132 encePairwiseOnDemand]: 123/132 looper letters, 13 selfloop transitions, 10 changer transitions 5/41 dead transitions. [2021-03-24 19:57:14,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 41 transitions, 265 flow [2021-03-24 19:57:14,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 795 transitions. [2021-03-24 19:57:14,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7528409090909091 [2021-03-24 19:57:14,088 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 795 transitions. [2021-03-24 19:57:14,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 795 transitions. [2021-03-24 19:57:14,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:14,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 795 transitions. [2021-03-24 19:57:14,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.375) internal successors, (795), 8 states have internal predecessors, (795), 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) [2021-03-24 19:57:14,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:14,094 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:14,094 INFO L185 Difference]: Start difference. First operand has 50 places, 31 transitions, 149 flow. Second operand 8 states and 795 transitions. [2021-03-24 19:57:14,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 41 transitions, 265 flow [2021-03-24 19:57:14,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 246 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-24 19:57:14,096 INFO L241 Difference]: Finished difference. Result has 51 places, 33 transitions, 179 flow [2021-03-24 19:57:14,096 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=179, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2021-03-24 19:57:14,097 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2021-03-24 19:57:14,097 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 179 flow [2021-03-24 19:57:14,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 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) [2021-03-24 19:57:14,097 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:14,097 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:14,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:57:14,098 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:14,098 INFO L82 PathProgramCache]: Analyzing trace with hash 788917456, now seen corresponding path program 2 times [2021-03-24 19:57:14,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:14,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118888887] [2021-03-24 19:57:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:14,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:14,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:14,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:14,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:14,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 19:57:14,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 19:57:14,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:14,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118888887] [2021-03-24 19:57:14,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:14,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:57:14,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926307042] [2021-03-24 19:57:14,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:57:14,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:14,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:57:14,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:57:14,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 132 [2021-03-24 19:57:14,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 179 flow. Second operand has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2021-03-24 19:57:14,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:14,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 132 [2021-03-24 19:57:14,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:14,337 INFO L129 PetriNetUnfolder]: 30/94 cut-off events. [2021-03-24 19:57:14,337 INFO L130 PetriNetUnfolder]: For 309/312 co-relation queries the response was YES. [2021-03-24 19:57:14,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 94 events. 30/94 cut-off events. For 309/312 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 313 event pairs, 5 based on Foata normal form. 8/101 useless extension candidates. Maximal degree in co-relation 367. Up to 40 conditions per place. [2021-03-24 19:57:14,338 INFO L132 encePairwiseOnDemand]: 124/132 looper letters, 11 selfloop transitions, 15 changer transitions 5/45 dead transitions. [2021-03-24 19:57:14,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 348 flow [2021-03-24 19:57:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 802 transitions. [2021-03-24 19:57:14,341 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.759469696969697 [2021-03-24 19:57:14,341 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 802 transitions. [2021-03-24 19:57:14,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 802 transitions. [2021-03-24 19:57:14,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:14,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 802 transitions. [2021-03-24 19:57:14,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.25) internal successors, (802), 8 states have internal predecessors, (802), 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) [2021-03-24 19:57:14,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:14,345 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:14,345 INFO L185 Difference]: Start difference. First operand has 51 places, 33 transitions, 179 flow. Second operand 8 states and 802 transitions. [2021-03-24 19:57:14,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 348 flow [2021-03-24 19:57:14,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 319 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 19:57:14,349 INFO L241 Difference]: Finished difference. Result has 54 places, 37 transitions, 239 flow [2021-03-24 19:57:14,349 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2021-03-24 19:57:14,349 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2021-03-24 19:57:14,349 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 239 flow [2021-03-24 19:57:14,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2021-03-24 19:57:14,349 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:14,349 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:14,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:57:14,350 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:14,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1250118119, now seen corresponding path program 1 times [2021-03-24 19:57:14,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:14,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45113110] [2021-03-24 19:57:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:14,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:14,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:14,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45113110] [2021-03-24 19:57:14,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:14,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:57:14,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357579741] [2021-03-24 19:57:14,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:57:14,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:14,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:57:14,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:57:14,400 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 132 [2021-03-24 19:57:14,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 19:57:14,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:14,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 132 [2021-03-24 19:57:14,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:14,441 INFO L129 PetriNetUnfolder]: 31/119 cut-off events. [2021-03-24 19:57:14,441 INFO L130 PetriNetUnfolder]: For 610/618 co-relation queries the response was YES. [2021-03-24 19:57:14,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 119 events. 31/119 cut-off events. For 610/618 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 510 event pairs, 8 based on Foata normal form. 10/122 useless extension candidates. Maximal degree in co-relation 493. Up to 47 conditions per place. [2021-03-24 19:57:14,442 INFO L132 encePairwiseOnDemand]: 128/132 looper letters, 5 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2021-03-24 19:57:14,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 287 flow [2021-03-24 19:57:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2021-03-24 19:57:14,445 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8651515151515151 [2021-03-24 19:57:14,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2021-03-24 19:57:14,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2021-03-24 19:57:14,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:14,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2021-03-24 19:57:14,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 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) [2021-03-24 19:57:14,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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) [2021-03-24 19:57:14,448 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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) [2021-03-24 19:57:14,448 INFO L185 Difference]: Start difference. First operand has 54 places, 37 transitions, 239 flow. Second operand 5 states and 571 transitions. [2021-03-24 19:57:14,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 287 flow [2021-03-24 19:57:14,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 252 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-03-24 19:57:14,451 INFO L241 Difference]: Finished difference. Result has 54 places, 38 transitions, 230 flow [2021-03-24 19:57:14,452 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2021-03-24 19:57:14,452 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2021-03-24 19:57:14,452 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 230 flow [2021-03-24 19:57:14,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 19:57:14,452 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:14,452 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:14,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:57:14,453 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:14,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:14,453 INFO L82 PathProgramCache]: Analyzing trace with hash -382166697, now seen corresponding path program 1 times [2021-03-24 19:57:14,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:14,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129220054] [2021-03-24 19:57:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:14,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:14,538 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-03-24 19:57:14,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:14,543 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 19:57:14,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:14,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:14,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 19:57:14,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 19:57:14,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:14,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:14,606 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-24 19:57:14,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 19:57:14,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:14,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:14,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129220054] [2021-03-24 19:57:14,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:14,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 19:57:14,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823759425] [2021-03-24 19:57:14,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 19:57:14,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:14,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 19:57:14,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-24 19:57:14,634 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 132 [2021-03-24 19:57:14,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 230 flow. Second operand has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 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) [2021-03-24 19:57:14,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:14,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 132 [2021-03-24 19:57:14,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:15,010 INFO L129 PetriNetUnfolder]: 220/435 cut-off events. [2021-03-24 19:57:15,010 INFO L130 PetriNetUnfolder]: For 1359/1368 co-relation queries the response was YES. [2021-03-24 19:57:15,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 435 events. 220/435 cut-off events. For 1359/1368 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2024 event pairs, 7 based on Foata normal form. 6/403 useless extension candidates. Maximal degree in co-relation 1627. Up to 201 conditions per place. [2021-03-24 19:57:15,014 INFO L132 encePairwiseOnDemand]: 120/132 looper letters, 28 selfloop transitions, 13 changer transitions 31/82 dead transitions. [2021-03-24 19:57:15,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 601 flow [2021-03-24 19:57:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-24 19:57:15,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-24 19:57:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1258 transitions. [2021-03-24 19:57:15,018 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6807359307359307 [2021-03-24 19:57:15,018 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1258 transitions. [2021-03-24 19:57:15,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1258 transitions. [2021-03-24 19:57:15,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:15,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1258 transitions. [2021-03-24 19:57:15,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 89.85714285714286) internal successors, (1258), 14 states have internal predecessors, (1258), 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) [2021-03-24 19:57:15,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 132.0) internal successors, (1980), 15 states have internal predecessors, (1980), 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) [2021-03-24 19:57:15,026 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 132.0) internal successors, (1980), 15 states have internal predecessors, (1980), 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) [2021-03-24 19:57:15,026 INFO L185 Difference]: Start difference. First operand has 54 places, 38 transitions, 230 flow. Second operand 14 states and 1258 transitions. [2021-03-24 19:57:15,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 601 flow [2021-03-24 19:57:15,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 589 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 19:57:15,032 INFO L241 Difference]: Finished difference. Result has 70 places, 38 transitions, 267 flow [2021-03-24 19:57:15,032 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=267, PETRI_PLACES=70, PETRI_TRANSITIONS=38} [2021-03-24 19:57:15,032 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2021-03-24 19:57:15,032 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 38 transitions, 267 flow [2021-03-24 19:57:15,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 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) [2021-03-24 19:57:15,033 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:15,033 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:15,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:57:15,033 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:15,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1698025557, now seen corresponding path program 2 times [2021-03-24 19:57:15,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:15,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650003045] [2021-03-24 19:57:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:15,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:15,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:15,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:15,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:57:15,139 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.0 percent of original size [2021-03-24 19:57:15,140 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size 37 [2021-03-24 19:57:15,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:15,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:15,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:15,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650003045] [2021-03-24 19:57:15,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:15,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 19:57:15,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870997073] [2021-03-24 19:57:15,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 19:57:15,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:15,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 19:57:15,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-24 19:57:15,203 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 132 [2021-03-24 19:57:15,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 38 transitions, 267 flow. Second operand has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2021-03-24 19:57:15,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:15,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 132 [2021-03-24 19:57:15,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:15,327 INFO L129 PetriNetUnfolder]: 44/149 cut-off events. [2021-03-24 19:57:15,328 INFO L130 PetriNetUnfolder]: For 810/830 co-relation queries the response was YES. [2021-03-24 19:57:15,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 149 events. 44/149 cut-off events. For 810/830 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs, 4 based on Foata normal form. 9/156 useless extension candidates. Maximal degree in co-relation 695. Up to 75 conditions per place. [2021-03-24 19:57:15,329 INFO L132 encePairwiseOnDemand]: 124/132 looper letters, 13 selfloop transitions, 6 changer transitions 11/46 dead transitions. [2021-03-24 19:57:15,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 46 transitions, 419 flow [2021-03-24 19:57:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 774 transitions. [2021-03-24 19:57:15,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7329545454545454 [2021-03-24 19:57:15,332 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 774 transitions. [2021-03-24 19:57:15,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 774 transitions. [2021-03-24 19:57:15,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:15,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 774 transitions. [2021-03-24 19:57:15,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.75) internal successors, (774), 8 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) [2021-03-24 19:57:15,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:15,337 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 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) [2021-03-24 19:57:15,337 INFO L185 Difference]: Start difference. First operand has 70 places, 38 transitions, 267 flow. Second operand 8 states and 774 transitions. [2021-03-24 19:57:15,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 46 transitions, 419 flow [2021-03-24 19:57:15,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 46 transitions, 352 flow, removed 27 selfloop flow, removed 9 redundant places. [2021-03-24 19:57:15,341 INFO L241 Difference]: Finished difference. Result has 62 places, 34 transitions, 233 flow [2021-03-24 19:57:15,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=233, PETRI_PLACES=62, PETRI_TRANSITIONS=34} [2021-03-24 19:57:15,341 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2021-03-24 19:57:15,341 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 34 transitions, 233 flow [2021-03-24 19:57:15,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2021-03-24 19:57:15,342 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:15,342 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:15,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:57:15,342 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:15,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:15,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1201403761, now seen corresponding path program 3 times [2021-03-24 19:57:15,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:15,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590302926] [2021-03-24 19:57:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:15,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:15,425 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-03-24 19:57:15,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:15,429 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 19:57:15,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:15,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:57:15,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 19:57:15,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 19:57:15,478 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-03-24 19:57:15,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 19:57:15,492 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size [2021-03-24 19:57:15,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 19:57:15,508 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-24 19:57:15,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 19:57:15,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:15,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590302926] [2021-03-24 19:57:15,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:15,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 19:57:15,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561969397] [2021-03-24 19:57:15,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 19:57:15,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:15,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 19:57:15,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-24 19:57:15,538 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 132 [2021-03-24 19:57:15,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 34 transitions, 233 flow. Second operand has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-03-24 19:57:15,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:15,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 132 [2021-03-24 19:57:15,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:15,878 INFO L129 PetriNetUnfolder]: 142/298 cut-off events. [2021-03-24 19:57:15,878 INFO L130 PetriNetUnfolder]: For 1554/1573 co-relation queries the response was YES. [2021-03-24 19:57:15,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 298 events. 142/298 cut-off events. For 1554/1573 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1269 event pairs, 4 based on Foata normal form. 9/304 useless extension candidates. Maximal degree in co-relation 1388. Up to 156 conditions per place. [2021-03-24 19:57:15,881 INFO L132 encePairwiseOnDemand]: 121/132 looper letters, 24 selfloop transitions, 6 changer transitions 17/57 dead transitions. [2021-03-24 19:57:15,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 533 flow [2021-03-24 19:57:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 19:57:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 19:57:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1125 transitions. [2021-03-24 19:57:15,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6555944055944056 [2021-03-24 19:57:15,884 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1125 transitions. [2021-03-24 19:57:15,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1125 transitions. [2021-03-24 19:57:15,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:15,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1125 transitions. [2021-03-24 19:57:15,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.53846153846153) internal successors, (1125), 13 states have internal predecessors, (1125), 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) [2021-03-24 19:57:15,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2021-03-24 19:57:15,890 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2021-03-24 19:57:15,890 INFO L185 Difference]: Start difference. First operand has 62 places, 34 transitions, 233 flow. Second operand 13 states and 1125 transitions. [2021-03-24 19:57:15,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 533 flow [2021-03-24 19:57:15,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 474 flow, removed 22 selfloop flow, removed 8 redundant places. [2021-03-24 19:57:15,895 INFO L241 Difference]: Finished difference. Result has 69 places, 30 transitions, 203 flow [2021-03-24 19:57:15,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=203, PETRI_PLACES=69, PETRI_TRANSITIONS=30} [2021-03-24 19:57:15,896 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2021-03-24 19:57:15,896 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 30 transitions, 203 flow [2021-03-24 19:57:15,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-03-24 19:57:15,897 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:15,897 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:15,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:57:15,897 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:15,897 INFO L82 PathProgramCache]: Analyzing trace with hash 995980017, now seen corresponding path program 4 times [2021-03-24 19:57:15,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:15,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927587739] [2021-03-24 19:57:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:15,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:15,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:15,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:15,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:57:15,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 19:57:15,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:15,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:15,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:16,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927587739] [2021-03-24 19:57:16,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:16,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:57:16,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547723875] [2021-03-24 19:57:16,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:57:16,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:16,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:57:16,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:57:16,008 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 132 [2021-03-24 19:57:16,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 30 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 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) [2021-03-24 19:57:16,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:16,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 132 [2021-03-24 19:57:16,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:16,139 INFO L129 PetriNetUnfolder]: 35/138 cut-off events. [2021-03-24 19:57:16,140 INFO L130 PetriNetUnfolder]: For 671/687 co-relation queries the response was YES. [2021-03-24 19:57:16,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 138 events. 35/138 cut-off events. For 671/687 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 658 event pairs, 0 based on Foata normal form. 15/151 useless extension candidates. Maximal degree in co-relation 598. Up to 39 conditions per place. [2021-03-24 19:57:16,141 INFO L132 encePairwiseOnDemand]: 126/132 looper letters, 11 selfloop transitions, 6 changer transitions 2/35 dead transitions. [2021-03-24 19:57:16,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 35 transitions, 301 flow [2021-03-24 19:57:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:16,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2021-03-24 19:57:16,143 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7251082251082251 [2021-03-24 19:57:16,143 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2021-03-24 19:57:16,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2021-03-24 19:57:16,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:16,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2021-03-24 19:57:16,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 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) [2021-03-24 19:57:16,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 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) [2021-03-24 19:57:16,148 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 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) [2021-03-24 19:57:16,148 INFO L185 Difference]: Start difference. First operand has 69 places, 30 transitions, 203 flow. Second operand 7 states and 670 transitions. [2021-03-24 19:57:16,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 35 transitions, 301 flow [2021-03-24 19:57:16,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 35 transitions, 237 flow, removed 24 selfloop flow, removed 14 redundant places. [2021-03-24 19:57:16,152 INFO L241 Difference]: Finished difference. Result has 53 places, 30 transitions, 183 flow [2021-03-24 19:57:16,152 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2021-03-24 19:57:16,152 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2021-03-24 19:57:16,152 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 183 flow [2021-03-24 19:57:16,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 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) [2021-03-24 19:57:16,152 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:16,152 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:16,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 19:57:16,153 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:16,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:16,153 INFO L82 PathProgramCache]: Analyzing trace with hash 974113423, now seen corresponding path program 1 times [2021-03-24 19:57:16,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:16,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827694605] [2021-03-24 19:57:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:16,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:16,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:16,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:16,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:16,201 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:57:16,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:16,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:16,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:16,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827694605] [2021-03-24 19:57:16,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:16,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:57:16,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432463772] [2021-03-24 19:57:16,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:57:16,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:16,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:57:16,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:57:16,212 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 132 [2021-03-24 19:57:16,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 30 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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) [2021-03-24 19:57:16,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:16,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 132 [2021-03-24 19:57:16,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:16,248 INFO L129 PetriNetUnfolder]: 33/135 cut-off events. [2021-03-24 19:57:16,249 INFO L130 PetriNetUnfolder]: For 315/366 co-relation queries the response was YES. [2021-03-24 19:57:16,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 135 events. 33/135 cut-off events. For 315/366 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 655 event pairs, 11 based on Foata normal form. 42/174 useless extension candidates. Maximal degree in co-relation 476. Up to 67 conditions per place. [2021-03-24 19:57:16,250 INFO L132 encePairwiseOnDemand]: 127/132 looper letters, 4 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2021-03-24 19:57:16,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 35 transitions, 229 flow [2021-03-24 19:57:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2021-03-24 19:57:16,252 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8318181818181818 [2021-03-24 19:57:16,252 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2021-03-24 19:57:16,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2021-03-24 19:57:16,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:16,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2021-03-24 19:57:16,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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) [2021-03-24 19:57:16,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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) [2021-03-24 19:57:16,255 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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) [2021-03-24 19:57:16,255 INFO L185 Difference]: Start difference. First operand has 53 places, 30 transitions, 183 flow. Second operand 5 states and 549 transitions. [2021-03-24 19:57:16,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 35 transitions, 229 flow [2021-03-24 19:57:16,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 35 transitions, 212 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 19:57:16,258 INFO L241 Difference]: Finished difference. Result has 53 places, 31 transitions, 192 flow [2021-03-24 19:57:16,258 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2021-03-24 19:57:16,258 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2021-03-24 19:57:16,258 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 192 flow [2021-03-24 19:57:16,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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) [2021-03-24 19:57:16,258 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:16,258 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] [2021-03-24 19:57:16,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 19:57:16,259 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:16,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1407971691, now seen corresponding path program 1 times [2021-03-24 19:57:16,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:16,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588761510] [2021-03-24 19:57:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:16,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:16,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:16,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:16,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:16,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:16,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:16,335 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:57:16,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:57:16,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:16,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:16,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588761510] [2021-03-24 19:57:16,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:16,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:57:16,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366055412] [2021-03-24 19:57:16,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:57:16,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:16,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:57:16,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:57:16,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 132 [2021-03-24 19:57:16,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2021-03-24 19:57:16,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:16,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 132 [2021-03-24 19:57:16,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:16,385 INFO L129 PetriNetUnfolder]: 5/52 cut-off events. [2021-03-24 19:57:16,385 INFO L130 PetriNetUnfolder]: For 149/181 co-relation queries the response was YES. [2021-03-24 19:57:16,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 52 events. 5/52 cut-off events. For 149/181 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 124 event pairs, 0 based on Foata normal form. 25/76 useless extension candidates. Maximal degree in co-relation 181. Up to 15 conditions per place. [2021-03-24 19:57:16,386 INFO L132 encePairwiseOnDemand]: 127/132 looper letters, 2 selfloop transitions, 8 changer transitions 4/34 dead transitions. [2021-03-24 19:57:16,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 34 transitions, 230 flow [2021-03-24 19:57:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2021-03-24 19:57:16,389 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8257575757575758 [2021-03-24 19:57:16,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2021-03-24 19:57:16,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2021-03-24 19:57:16,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:16,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2021-03-24 19:57:16,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 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) [2021-03-24 19:57:16,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 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) [2021-03-24 19:57:16,394 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 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) [2021-03-24 19:57:16,394 INFO L185 Difference]: Start difference. First operand has 53 places, 31 transitions, 192 flow. Second operand 7 states and 763 transitions. [2021-03-24 19:57:16,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 34 transitions, 230 flow [2021-03-24 19:57:16,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 34 transitions, 187 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-03-24 19:57:16,395 INFO L241 Difference]: Finished difference. Result has 55 places, 30 transitions, 171 flow [2021-03-24 19:57:16,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=55, PETRI_TRANSITIONS=30} [2021-03-24 19:57:16,396 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2021-03-24 19:57:16,396 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 30 transitions, 171 flow [2021-03-24 19:57:16,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2021-03-24 19:57:16,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:16,396 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] [2021-03-24 19:57:16,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 19:57:16,396 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash -395755107, now seen corresponding path program 1 times [2021-03-24 19:57:16,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:16,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417195323] [2021-03-24 19:57:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:57:16,431 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:57:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:57:16,469 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:57:16,507 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 19:57:16,507 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 19:57:16,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 19:57:16,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:57:16 BasicIcfg [2021-03-24 19:57:16,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:57:16,567 INFO L168 Benchmark]: Toolchain (without parser) took 14696.61 ms. Allocated memory was 255.9 MB in the beginning and 528.5 MB in the end (delta: 272.6 MB). Free memory was 232.8 MB in the beginning and 447.2 MB in the end (delta: -214.4 MB). Peak memory consumption was 58.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:16,567 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:57:16,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.58 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 232.8 MB in the beginning and 320.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:16,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.74 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 317.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:16,568 INFO L168 Benchmark]: Boogie Preprocessor took 52.42 ms. Allocated memory is still 360.7 MB. Free memory was 317.7 MB in the beginning and 315.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:16,568 INFO L168 Benchmark]: RCFGBuilder took 1666.96 ms. Allocated memory is still 360.7 MB. Free memory was 315.7 MB in the beginning and 276.9 MB in the end (delta: 38.7 MB). Peak memory consumption was 43.5 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:16,568 INFO L168 Benchmark]: TraceAbstraction took 12328.25 ms. Allocated memory was 360.7 MB in the beginning and 528.5 MB in the end (delta: 167.8 MB). Free memory was 276.9 MB in the beginning and 447.2 MB in the end (delta: -170.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:57:16,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 566.58 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 232.8 MB in the beginning and 320.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 75.74 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 317.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 52.42 ms. Allocated memory is still 360.7 MB. Free memory was 317.7 MB in the beginning and 315.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1666.96 ms. Allocated memory is still 360.7 MB. Free memory was 315.7 MB in the beginning and 276.9 MB in the end (delta: 38.7 MB). Peak memory consumption was 43.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 12328.25 ms. Allocated memory was 360.7 MB in the beginning and 528.5 MB in the end (delta: 167.8 MB). Free memory was 276.9 MB in the beginning and 447.2 MB in the end (delta: -170.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8012.5ms, 82 PlacesBefore, 37 PlacesAfterwards, 77 TransitionsBefore, 31 TransitionsAfterwards, 918 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 53 TotalNumberOfCompositions, 1657 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 809, positive: 743, positive conditional: 0, positive unconditional: 743, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 603, positive: 572, positive conditional: 0, positive unconditional: 572, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 603, positive: 572, positive conditional: 0, positive unconditional: 572, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 603, positive: 570, positive conditional: 0, positive unconditional: 570, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 550, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 544, negative conditional: 0, negative unconditional: 544, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 809, positive: 171, positive conditional: 0, positive unconditional: 171, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 603, unknown conditional: 0, unknown unconditional: 603] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; [L713] 0 _Bool x$flush_delayed; [L714] 0 int x$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0] [L715] 0 _Bool x$r_buff0_thd0; [L716] 0 _Bool x$r_buff0_thd1; [L717] 0 _Bool x$r_buff0_thd2; [L718] 0 _Bool x$r_buff1_thd0; [L719] 0 _Bool x$r_buff1_thd1; [L720] 0 _Bool x$r_buff1_thd2; [L721] 0 _Bool x$read_delayed; [L722] 0 int *x$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}] [L723] 0 int x$w_buff0; [L724] 0 _Bool x$w_buff0_used; [L725] 0 int x$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0] [L726] 0 _Bool x$w_buff1_used; [L728] 0 int y = 0; [L729] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2475; [L791] FCALL, FORK 0 pthread_create(&t2475, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L792] 0 pthread_t t2476; [L793] FCALL, FORK 0 pthread_create(&t2476, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L754] 2 x$w_buff1 = x$w_buff0 [L755] 2 x$w_buff0 = 2 [L756] 2 x$w_buff1_used = x$w_buff0_used [L757] 2 x$w_buff0_used = (_Bool)1 [L18] COND FALSE 2 !(!expression) [L759] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L760] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L761] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L762] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L734] 1 y = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L737] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L741] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L741] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L742] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L742] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L743] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L743] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L744] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L768] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L768] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L769] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L769] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L770] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L770] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L771] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L771] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L772] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L772] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 1 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L800] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L800] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L801] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L801] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L802] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L802] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L803] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L803] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 x$flush_delayed = weak$$choice2 [L809] 0 x$mem_tmp = x [L810] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L810] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L811] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L811] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L812] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L812] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L813] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L813] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L815] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L818] 0 x = x$flush_delayed ? x$mem_tmp : x [L819] 0 x$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 12167.9ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2034.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8120.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 77 SDtfs, 116 SDslu, 131 SDs, 0 SdLazy, 679 SolverSat, 149 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 745.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 921.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=267occurred in iteration=8, InterpolantAutomatonStates: 101, 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: 54.5ms SsaConstructionTime, 484.4ms SatisfiabilityAnalysisTime, 1169.6ms InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 1522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...