/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/concurrent/pthreads/forkFork.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 06:06:32,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 06:06:32,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 06:06:32,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 06:06:32,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 06:06:32,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 06:06:32,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 06:06:32,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 06:06:32,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 06:06:32,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 06:06:32,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 06:06:32,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 06:06:32,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 06:06:32,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 06:06:32,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 06:06:32,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 06:06:32,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 06:06:32,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 06:06:32,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 06:06:32,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 06:06:32,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 06:06:32,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 06:06:32,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 06:06:32,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 06:06:32,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 06:06:32,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 06:06:32,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 06:06:32,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 06:06:32,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 06:06:32,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 06:06:32,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 06:06:32,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 06:06:32,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 06:06:32,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 06:06:32,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 06:06:32,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 06:06:32,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 06:06:32,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 06:06:32,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 06:06:32,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 06:06:32,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 06:06:32,453 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-SemanticLooper.epf [2020-10-16 06:06:32,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 06:06:32,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 06:06:32,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 06:06:32,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 06:06:32,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 06:06:32,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 06:06:32,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 06:06:32,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 06:06:32,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 06:06:32,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 06:06:32,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 06:06:32,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 06:06:32,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 06:06:32,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 06:06:32,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 06:06:32,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 06:06:32,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 06:06:32,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 06:06:32,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 06:06:32,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 06:06:32,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 06:06:32,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 06:06:32,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 06:06:32,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 06:06:32,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 06:06:32,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 06:06:32,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 06:06:32,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 06:06:32,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 06:06:32,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 06:06:32,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 06:06:32,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 06:06:32,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 06:06:32,780 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 06:06:32,781 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkFork.c [2020-10-16 06:06:32,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4859c0e66/08145133a9144ad188e8e72957c399ae/FLAGa32f5df91 [2020-10-16 06:06:33,295 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 06:06:33,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkFork.c [2020-10-16 06:06:33,297 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 06:06:33,297 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 06:06:33,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4859c0e66/08145133a9144ad188e8e72957c399ae/FLAGa32f5df91 [2020-10-16 06:06:33,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4859c0e66/08145133a9144ad188e8e72957c399ae [2020-10-16 06:06:33,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 06:06:33,705 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 06:06:33,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 06:06:33,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 06:06:33,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 06:06:33,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 06:06:33" (1/1) ... [2020-10-16 06:06:33,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ab3b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:33, skipping insertion in model container [2020-10-16 06:06:33,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 06:06:33" (1/1) ... [2020-10-16 06:06:33,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 06:06:33,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 06:06:33,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 06:06:34,007 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 06:06:34,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 06:06:34,038 INFO L208 MainTranslator]: Completed translation [2020-10-16 06:06:34,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34 WrapperNode [2020-10-16 06:06:34,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 06:06:34,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 06:06:34,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 06:06:34,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 06:06:34,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 06:06:34,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 06:06:34,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 06:06:34,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 06:06:34,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... [2020-10-16 06:06:34,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 06:06:34,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 06:06:34,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 06:06:34,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 06:06:34,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 06:06:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-16 06:06:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 06:06:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-10-16 06:06:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-10-16 06:06:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-16 06:06:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-16 06:06:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 06:06:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 06:06:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 06:06:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 06:06:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-16 06:06:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 06:06:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 06:06:34,154 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 06:06:34,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 06:06:34,471 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-16 06:06:34,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 06:06:34 BoogieIcfgContainer [2020-10-16 06:06:34,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 06:06:34,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 06:06:34,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 06:06:34,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 06:06:34,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 06:06:33" (1/3) ... [2020-10-16 06:06:34,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3295b757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 06:06:34, skipping insertion in model container [2020-10-16 06:06:34,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 06:06:34" (2/3) ... [2020-10-16 06:06:34,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3295b757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 06:06:34, skipping insertion in model container [2020-10-16 06:06:34,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 06:06:34" (3/3) ... [2020-10-16 06:06:34,480 INFO L111 eAbstractionObserver]: Analyzing ICFG forkFork.c [2020-10-16 06:06:34,491 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 06:06:34,499 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 06:06:34,500 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 06:06:34,537 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,537 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,537 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,537 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,538 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,538 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,538 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,538 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,539 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,539 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,539 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,539 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,540 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,540 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,540 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,540 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,541 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,541 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,541 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,541 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,542 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,542 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,543 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,543 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,543 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,543 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,543 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,544 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~a.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,544 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~a.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,545 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,545 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,545 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,545 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,546 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,546 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,546 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,546 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,547 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,547 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,547 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,547 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,548 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,548 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,549 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,549 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,550 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,550 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,550 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,550 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,551 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,551 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,551 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,551 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,552 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,552 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,552 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,552 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,553 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,553 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,553 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,553 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,553 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,554 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,554 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,554 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,554 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,555 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,555 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,563 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,563 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,563 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,564 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,564 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,564 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,564 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,565 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,565 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,571 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,571 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,571 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,572 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,572 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,572 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,572 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,573 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,573 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,573 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,573 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,573 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,574 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,574 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,574 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,574 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,598 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,598 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,599 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,599 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,599 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,599 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,599 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,600 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,600 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:06:34,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 06:06:34,688 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 06:06:34,688 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 06:06:34,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 06:06:34,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 06:06:34,688 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 06:06:34,689 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 06:06:34,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 06:06:34,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 06:06:34,704 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 194 flow [2020-10-16 06:06:34,760 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2020-10-16 06:06:34,760 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 06:06:34,765 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 2/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 98. Up to 5 conditions per place. [2020-10-16 06:06:34,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 83 transitions, 194 flow [2020-10-16 06:06:34,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 59 transitions, 139 flow [2020-10-16 06:06:34,774 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 06:06:34,776 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 59 transitions, 139 flow [2020-10-16 06:06:34,779 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 59 transitions, 139 flow [2020-10-16 06:06:34,780 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 139 flow [2020-10-16 06:06:34,800 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2020-10-16 06:06:34,801 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 06:06:34,801 INFO L80 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 69 events. 2/69 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 36 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 54. Up to 5 conditions per place. [2020-10-16 06:06:34,803 INFO L117 LiptonReduction]: Number of co-enabled transitions 294 [2020-10-16 06:06:36,065 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-16 06:06:36,242 INFO L132 LiptonReduction]: Checked pairs total: 881 [2020-10-16 06:06:36,243 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 06:06:36,246 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1474 [2020-10-16 06:06:36,254 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2020-10-16 06:06:36,254 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 06:06:36,254 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:36,256 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 06:06:36,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:36,263 INFO L82 PathProgramCache]: Analyzing trace with hash 237049622, now seen corresponding path program 1 times [2020-10-16 06:06:36,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:36,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527692160] [2020-10-16 06:06:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:36,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527692160] [2020-10-16 06:06:36,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:36,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 06:06:36,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991644441] [2020-10-16 06:06:36,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 06:06:36,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:36,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 06:06:36,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-16 06:06:36,541 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 128 [2020-10-16 06:06:36,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 59 flow. Second operand 6 states. [2020-10-16 06:06:36,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:36,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 128 [2020-10-16 06:06:36,548 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:36,706 INFO L129 PetriNetUnfolder]: 26/66 cut-off events. [2020-10-16 06:06:36,706 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 06:06:36,707 INFO L80 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 66 events. 26/66 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 128. Up to 37 conditions per place. [2020-10-16 06:06:36,709 INFO L132 encePairwiseOnDemand]: 122/128 looper letters, 15 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2020-10-16 06:06:36,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 111 flow [2020-10-16 06:06:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:06:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:06:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 417 transitions. [2020-10-16 06:06:36,726 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.54296875 [2020-10-16 06:06:36,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 417 transitions. [2020-10-16 06:06:36,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 417 transitions. [2020-10-16 06:06:36,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:36,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 417 transitions. [2020-10-16 06:06:36,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:06:36,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:06:36,746 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:06:36,749 INFO L185 Difference]: Start difference. First operand has 23 places, 19 transitions, 59 flow. Second operand 6 states and 417 transitions. [2020-10-16 06:06:36,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 111 flow [2020-10-16 06:06:36,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 06:06:36,755 INFO L241 Difference]: Finished difference. Result has 23 places, 18 transitions, 53 flow [2020-10-16 06:06:36,758 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=53, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2020-10-16 06:06:36,759 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2020-10-16 06:06:36,759 INFO L481 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 53 flow [2020-10-16 06:06:36,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 06:06:36,759 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:36,759 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:36,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 06:06:36,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:36,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:36,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1747104093, now seen corresponding path program 1 times [2020-10-16 06:06:36,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:36,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271747602] [2020-10-16 06:06:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:36,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271747602] [2020-10-16 06:06:36,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:36,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 06:06:36,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118056805] [2020-10-16 06:06:36,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:06:36,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:36,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:06:36,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:06:36,850 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 128 [2020-10-16 06:06:36,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 53 flow. Second operand 5 states. [2020-10-16 06:06:36,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:36,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 128 [2020-10-16 06:06:36,851 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:36,932 INFO L129 PetriNetUnfolder]: 18/60 cut-off events. [2020-10-16 06:06:36,932 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 06:06:36,932 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 60 events. 18/60 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 12 based on Foata normal form. 2/57 useless extension candidates. Maximal degree in co-relation 25. Up to 40 conditions per place. [2020-10-16 06:06:36,933 INFO L132 encePairwiseOnDemand]: 121/128 looper letters, 19 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2020-10-16 06:06:36,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 135 flow [2020-10-16 06:06:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:06:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:06:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2020-10-16 06:06:36,937 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.67578125 [2020-10-16 06:06:36,938 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 519 transitions. [2020-10-16 06:06:36,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 519 transitions. [2020-10-16 06:06:36,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:36,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 519 transitions. [2020-10-16 06:06:36,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:06:36,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:06:36,943 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:06:36,943 INFO L185 Difference]: Start difference. First operand has 23 places, 18 transitions, 53 flow. Second operand 6 states and 519 transitions. [2020-10-16 06:06:36,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 135 flow [2020-10-16 06:06:36,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 29 transitions, 119 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-16 06:06:36,946 INFO L241 Difference]: Finished difference. Result has 26 places, 22 transitions, 81 flow [2020-10-16 06:06:36,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2020-10-16 06:06:36,947 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2020-10-16 06:06:36,947 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 81 flow [2020-10-16 06:06:36,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:06:36,947 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:36,947 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:36,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 06:06:36,948 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:36,948 INFO L82 PathProgramCache]: Analyzing trace with hash 821629211, now seen corresponding path program 2 times [2020-10-16 06:06:36,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:36,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259974326] [2020-10-16 06:06:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:37,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259974326] [2020-10-16 06:06:37,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:37,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 06:06:37,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437348747] [2020-10-16 06:06:37,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 06:06:37,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:37,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 06:06:37,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-16 06:06:37,032 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 128 [2020-10-16 06:06:37,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 81 flow. Second operand 6 states. [2020-10-16 06:06:37,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:37,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 128 [2020-10-16 06:06:37,033 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:37,173 INFO L129 PetriNetUnfolder]: 33/99 cut-off events. [2020-10-16 06:06:37,173 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-16 06:06:37,174 INFO L80 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 99 events. 33/99 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 291 event pairs, 12 based on Foata normal form. 2/94 useless extension candidates. Maximal degree in co-relation 182. Up to 24 conditions per place. [2020-10-16 06:06:37,175 INFO L132 encePairwiseOnDemand]: 120/128 looper letters, 35 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2020-10-16 06:06:37,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 48 transitions, 242 flow [2020-10-16 06:06:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 06:06:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 06:06:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 473 transitions. [2020-10-16 06:06:37,178 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5279017857142857 [2020-10-16 06:06:37,178 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 473 transitions. [2020-10-16 06:06:37,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 473 transitions. [2020-10-16 06:06:37,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:37,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 473 transitions. [2020-10-16 06:06:37,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 06:06:37,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 06:06:37,182 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 06:06:37,182 INFO L185 Difference]: Start difference. First operand has 26 places, 22 transitions, 81 flow. Second operand 7 states and 473 transitions. [2020-10-16 06:06:37,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 48 transitions, 242 flow [2020-10-16 06:06:37,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 48 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 06:06:37,185 INFO L241 Difference]: Finished difference. Result has 34 places, 29 transitions, 150 flow [2020-10-16 06:06:37,185 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2020-10-16 06:06:37,186 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 11 predicate places. [2020-10-16 06:06:37,186 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 150 flow [2020-10-16 06:06:37,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 06:06:37,186 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:37,186 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:37,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 06:06:37,187 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:37,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:37,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1970084225, now seen corresponding path program 3 times [2020-10-16 06:06:37,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:37,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486318208] [2020-10-16 06:06:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:37,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486318208] [2020-10-16 06:06:37,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:37,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 06:06:37,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016420118] [2020-10-16 06:06:37,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 06:06:37,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:37,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 06:06:37,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-16 06:06:37,333 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 128 [2020-10-16 06:06:37,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 150 flow. Second operand 8 states. [2020-10-16 06:06:37,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:37,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 128 [2020-10-16 06:06:37,334 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:37,550 INFO L129 PetriNetUnfolder]: 28/88 cut-off events. [2020-10-16 06:06:37,550 INFO L130 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2020-10-16 06:06:37,551 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 88 events. 28/88 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 245 event pairs, 6 based on Foata normal form. 2/85 useless extension candidates. Maximal degree in co-relation 199. Up to 33 conditions per place. [2020-10-16 06:06:37,552 INFO L132 encePairwiseOnDemand]: 119/128 looper letters, 26 selfloop transitions, 12 changer transitions 0/38 dead transitions. [2020-10-16 06:06:37,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 242 flow [2020-10-16 06:06:37,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 06:06:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 06:06:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 474 transitions. [2020-10-16 06:06:37,555 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.462890625 [2020-10-16 06:06:37,555 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 474 transitions. [2020-10-16 06:06:37,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 474 transitions. [2020-10-16 06:06:37,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:37,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 474 transitions. [2020-10-16 06:06:37,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 06:06:37,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 06:06:37,559 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 06:06:37,559 INFO L185 Difference]: Start difference. First operand has 34 places, 29 transitions, 150 flow. Second operand 8 states and 474 transitions. [2020-10-16 06:06:37,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 242 flow [2020-10-16 06:06:37,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 227 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 06:06:37,562 INFO L241 Difference]: Finished difference. Result has 41 places, 27 transitions, 158 flow [2020-10-16 06:06:37,563 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=158, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2020-10-16 06:06:37,563 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 18 predicate places. [2020-10-16 06:06:37,563 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 158 flow [2020-10-16 06:06:37,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 06:06:37,563 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:37,563 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:37,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 06:06:37,564 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:37,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:37,564 INFO L82 PathProgramCache]: Analyzing trace with hash -358827535, now seen corresponding path program 1 times [2020-10-16 06:06:37,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:37,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229652007] [2020-10-16 06:06:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:37,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229652007] [2020-10-16 06:06:37,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:37,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 06:06:37,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144175092] [2020-10-16 06:06:37,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 06:06:37,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:37,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 06:06:37,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-16 06:06:37,873 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 128 [2020-10-16 06:06:37,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 158 flow. Second operand 13 states. [2020-10-16 06:06:37,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:37,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 128 [2020-10-16 06:06:37,874 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:38,583 INFO L129 PetriNetUnfolder]: 38/133 cut-off events. [2020-10-16 06:06:38,583 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2020-10-16 06:06:38,584 INFO L80 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 133 events. 38/133 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 525 event pairs, 3 based on Foata normal form. 4/129 useless extension candidates. Maximal degree in co-relation 365. Up to 39 conditions per place. [2020-10-16 06:06:38,585 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 27 selfloop transitions, 5 changer transitions 25/57 dead transitions. [2020-10-16 06:06:38,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 423 flow [2020-10-16 06:06:38,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 06:06:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-16 06:06:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 605 transitions. [2020-10-16 06:06:38,590 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.33761160714285715 [2020-10-16 06:06:38,590 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 605 transitions. [2020-10-16 06:06:38,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 605 transitions. [2020-10-16 06:06:38,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:38,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 605 transitions. [2020-10-16 06:06:38,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-16 06:06:38,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-16 06:06:38,596 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-16 06:06:38,596 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 158 flow. Second operand 14 states and 605 transitions. [2020-10-16 06:06:38,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 423 flow [2020-10-16 06:06:38,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 390 flow, removed 4 selfloop flow, removed 5 redundant places. [2020-10-16 06:06:38,601 INFO L241 Difference]: Finished difference. Result has 59 places, 25 transitions, 159 flow [2020-10-16 06:06:38,601 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=159, PETRI_PLACES=59, PETRI_TRANSITIONS=25} [2020-10-16 06:06:38,601 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 36 predicate places. [2020-10-16 06:06:38,601 INFO L481 AbstractCegarLoop]: Abstraction has has 59 places, 25 transitions, 159 flow [2020-10-16 06:06:38,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 06:06:38,602 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:38,602 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:38,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 06:06:38,602 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:38,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1842549229, now seen corresponding path program 2 times [2020-10-16 06:06:38,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:38,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519123318] [2020-10-16 06:06:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:38,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519123318] [2020-10-16 06:06:38,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:38,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 06:06:38,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700678239] [2020-10-16 06:06:38,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 06:06:38,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:38,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 06:06:38,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-16 06:06:38,833 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 128 [2020-10-16 06:06:38,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 25 transitions, 159 flow. Second operand 13 states. [2020-10-16 06:06:38,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:38,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 128 [2020-10-16 06:06:38,834 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:39,482 INFO L129 PetriNetUnfolder]: 25/81 cut-off events. [2020-10-16 06:06:39,482 INFO L130 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2020-10-16 06:06:39,483 INFO L80 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 81 events. 25/81 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 217 event pairs, 1 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 292. Up to 24 conditions per place. [2020-10-16 06:06:39,484 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 19 selfloop transitions, 13 changer transitions 9/41 dead transitions. [2020-10-16 06:06:39,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 41 transitions, 325 flow [2020-10-16 06:06:39,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 06:06:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-16 06:06:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 596 transitions. [2020-10-16 06:06:39,488 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.3325892857142857 [2020-10-16 06:06:39,488 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 596 transitions. [2020-10-16 06:06:39,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 596 transitions. [2020-10-16 06:06:39,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:39,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 596 transitions. [2020-10-16 06:06:39,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-16 06:06:39,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-16 06:06:39,494 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-16 06:06:39,494 INFO L185 Difference]: Start difference. First operand has 59 places, 25 transitions, 159 flow. Second operand 14 states and 596 transitions. [2020-10-16 06:06:39,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 41 transitions, 325 flow [2020-10-16 06:06:39,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 279 flow, removed 19 selfloop flow, removed 13 redundant places. [2020-10-16 06:06:39,498 INFO L241 Difference]: Finished difference. Result has 52 places, 25 transitions, 161 flow [2020-10-16 06:06:39,499 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=161, PETRI_PLACES=52, PETRI_TRANSITIONS=25} [2020-10-16 06:06:39,499 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 29 predicate places. [2020-10-16 06:06:39,499 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 25 transitions, 161 flow [2020-10-16 06:06:39,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 06:06:39,499 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:39,499 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:39,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 06:06:39,500 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:39,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:39,500 INFO L82 PathProgramCache]: Analyzing trace with hash -849036203, now seen corresponding path program 3 times [2020-10-16 06:06:39,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:39,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226398481] [2020-10-16 06:06:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:39,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226398481] [2020-10-16 06:06:39,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:39,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 06:06:39,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342101653] [2020-10-16 06:06:39,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 06:06:39,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:39,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 06:06:39,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-16 06:06:39,728 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 128 [2020-10-16 06:06:39,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 25 transitions, 161 flow. Second operand 13 states. [2020-10-16 06:06:39,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:39,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 128 [2020-10-16 06:06:39,729 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:40,380 INFO L129 PetriNetUnfolder]: 32/105 cut-off events. [2020-10-16 06:06:40,380 INFO L130 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2020-10-16 06:06:40,383 INFO L80 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 105 events. 32/105 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 363 event pairs, 2 based on Foata normal form. 3/102 useless extension candidates. Maximal degree in co-relation 393. Up to 27 conditions per place. [2020-10-16 06:06:40,383 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 22 selfloop transitions, 7 changer transitions 22/51 dead transitions. [2020-10-16 06:06:40,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 410 flow [2020-10-16 06:06:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 06:06:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-16 06:06:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 645 transitions. [2020-10-16 06:06:40,388 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2020-10-16 06:06:40,389 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 645 transitions. [2020-10-16 06:06:40,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 645 transitions. [2020-10-16 06:06:40,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:40,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 645 transitions. [2020-10-16 06:06:40,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 16 states. [2020-10-16 06:06:40,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 16 states. [2020-10-16 06:06:40,395 INFO L81 ComplementDD]: Finished complementDD. Result 16 states. [2020-10-16 06:06:40,395 INFO L185 Difference]: Start difference. First operand has 52 places, 25 transitions, 161 flow. Second operand 15 states and 645 transitions. [2020-10-16 06:06:40,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 410 flow [2020-10-16 06:06:40,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 346 flow, removed 8 selfloop flow, removed 12 redundant places. [2020-10-16 06:06:40,401 INFO L241 Difference]: Finished difference. Result has 58 places, 22 transitions, 142 flow [2020-10-16 06:06:40,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=22} [2020-10-16 06:06:40,402 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 35 predicate places. [2020-10-16 06:06:40,402 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 22 transitions, 142 flow [2020-10-16 06:06:40,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 06:06:40,403 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:40,403 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:40,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 06:06:40,403 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash 821336341, now seen corresponding path program 4 times [2020-10-16 06:06:40,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:40,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171202550] [2020-10-16 06:06:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:40,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171202550] [2020-10-16 06:06:40,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:40,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 06:06:40,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087026399] [2020-10-16 06:06:40,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 06:06:40,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:40,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 06:06:40,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-16 06:06:40,687 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 128 [2020-10-16 06:06:40,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 22 transitions, 142 flow. Second operand 13 states. [2020-10-16 06:06:40,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:40,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 128 [2020-10-16 06:06:40,688 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:41,289 INFO L129 PetriNetUnfolder]: 21/74 cut-off events. [2020-10-16 06:06:41,289 INFO L130 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2020-10-16 06:06:41,290 INFO L80 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 74 events. 21/74 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 194 event pairs, 2 based on Foata normal form. 2/73 useless extension candidates. Maximal degree in co-relation 296. Up to 22 conditions per place. [2020-10-16 06:06:41,291 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 18 selfloop transitions, 9 changer transitions 12/39 dead transitions. [2020-10-16 06:06:41,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 39 transitions, 340 flow [2020-10-16 06:06:41,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 06:06:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-16 06:06:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 594 transitions. [2020-10-16 06:06:41,296 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.3314732142857143 [2020-10-16 06:06:41,296 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 594 transitions. [2020-10-16 06:06:41,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 594 transitions. [2020-10-16 06:06:41,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:41,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 594 transitions. [2020-10-16 06:06:41,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-16 06:06:41,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-16 06:06:41,301 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-16 06:06:41,301 INFO L185 Difference]: Start difference. First operand has 58 places, 22 transitions, 142 flow. Second operand 14 states and 594 transitions. [2020-10-16 06:06:41,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 39 transitions, 340 flow [2020-10-16 06:06:41,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 254 flow, removed 16 selfloop flow, removed 18 redundant places. [2020-10-16 06:06:41,304 INFO L241 Difference]: Finished difference. Result has 49 places, 22 transitions, 130 flow [2020-10-16 06:06:41,305 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=130, PETRI_PLACES=49, PETRI_TRANSITIONS=22} [2020-10-16 06:06:41,305 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 26 predicate places. [2020-10-16 06:06:41,305 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 22 transitions, 130 flow [2020-10-16 06:06:41,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 06:06:41,305 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:41,306 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:41,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 06:06:41,306 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1800743093, now seen corresponding path program 5 times [2020-10-16 06:06:41,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:41,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299850969] [2020-10-16 06:06:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:41,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299850969] [2020-10-16 06:06:41,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:41,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 06:06:41,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055616933] [2020-10-16 06:06:41,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 06:06:41,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:41,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 06:06:41,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-16 06:06:41,530 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 128 [2020-10-16 06:06:41,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 22 transitions, 130 flow. Second operand 13 states. [2020-10-16 06:06:41,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:41,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 128 [2020-10-16 06:06:41,531 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:42,120 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-10-16 06:06:42,121 INFO L130 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2020-10-16 06:06:42,121 INFO L80 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 81 events. 24/81 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 224 event pairs, 2 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 298. Up to 20 conditions per place. [2020-10-16 06:06:42,122 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 20 selfloop transitions, 8 changer transitions 16/44 dead transitions. [2020-10-16 06:06:42,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 44 transitions, 338 flow [2020-10-16 06:06:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 06:06:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-16 06:06:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 641 transitions. [2020-10-16 06:06:42,128 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.3338541666666667 [2020-10-16 06:06:42,128 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 641 transitions. [2020-10-16 06:06:42,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 641 transitions. [2020-10-16 06:06:42,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:42,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 641 transitions. [2020-10-16 06:06:42,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 16 states. [2020-10-16 06:06:42,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 16 states. [2020-10-16 06:06:42,133 INFO L81 ComplementDD]: Finished complementDD. Result 16 states. [2020-10-16 06:06:42,133 INFO L185 Difference]: Start difference. First operand has 49 places, 22 transitions, 130 flow. Second operand 15 states and 641 transitions. [2020-10-16 06:06:42,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 44 transitions, 338 flow [2020-10-16 06:06:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 270 flow, removed 15 selfloop flow, removed 13 redundant places. [2020-10-16 06:06:42,136 INFO L241 Difference]: Finished difference. Result has 50 places, 22 transitions, 128 flow [2020-10-16 06:06:42,136 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=22} [2020-10-16 06:06:42,137 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 27 predicate places. [2020-10-16 06:06:42,137 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 22 transitions, 128 flow [2020-10-16 06:06:42,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 06:06:42,137 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:42,137 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:42,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 06:06:42,138 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:42,138 INFO L82 PathProgramCache]: Analyzing trace with hash -719780385, now seen corresponding path program 6 times [2020-10-16 06:06:42,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:42,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046875412] [2020-10-16 06:06:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:42,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046875412] [2020-10-16 06:06:42,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:42,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 06:06:42,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95138760] [2020-10-16 06:06:42,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 06:06:42,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:42,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 06:06:42,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-16 06:06:42,372 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 128 [2020-10-16 06:06:42,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 22 transitions, 128 flow. Second operand 13 states. [2020-10-16 06:06:42,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:42,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 128 [2020-10-16 06:06:42,373 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:42,942 INFO L129 PetriNetUnfolder]: 13/54 cut-off events. [2020-10-16 06:06:42,942 INFO L130 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2020-10-16 06:06:42,943 INFO L80 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 54 events. 13/54 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 4 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 197. Up to 13 conditions per place. [2020-10-16 06:06:42,943 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 11 selfloop transitions, 6 changer transitions 17/34 dead transitions. [2020-10-16 06:06:42,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 34 transitions, 255 flow [2020-10-16 06:06:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 06:06:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-16 06:06:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 594 transitions. [2020-10-16 06:06:42,955 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.3314732142857143 [2020-10-16 06:06:42,955 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 594 transitions. [2020-10-16 06:06:42,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 594 transitions. [2020-10-16 06:06:42,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:42,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 594 transitions. [2020-10-16 06:06:42,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-16 06:06:42,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-16 06:06:42,960 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-16 06:06:42,960 INFO L185 Difference]: Start difference. First operand has 50 places, 22 transitions, 128 flow. Second operand 14 states and 594 transitions. [2020-10-16 06:06:42,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 34 transitions, 255 flow [2020-10-16 06:06:42,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 208 flow, removed 13 selfloop flow, removed 13 redundant places. [2020-10-16 06:06:42,963 INFO L241 Difference]: Finished difference. Result has 48 places, 16 transitions, 84 flow [2020-10-16 06:06:42,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=84, PETRI_PLACES=48, PETRI_TRANSITIONS=16} [2020-10-16 06:06:42,963 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 25 predicate places. [2020-10-16 06:06:42,963 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 16 transitions, 84 flow [2020-10-16 06:06:42,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 06:06:42,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:42,964 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:42,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 06:06:42,964 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash 368496419, now seen corresponding path program 7 times [2020-10-16 06:06:42,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:42,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600787799] [2020-10-16 06:06:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:43,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600787799] [2020-10-16 06:06:43,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:43,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 06:06:43,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474505413] [2020-10-16 06:06:43,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 06:06:43,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:43,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 06:06:43,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-16 06:06:43,165 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 128 [2020-10-16 06:06:43,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 16 transitions, 84 flow. Second operand 13 states. [2020-10-16 06:06:43,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:43,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 128 [2020-10-16 06:06:43,166 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:43,596 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 06:06:43,596 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 06:06:43,597 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 25 events. 3/25 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 80. Up to 7 conditions per place. [2020-10-16 06:06:43,597 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 7 selfloop transitions, 10 changer transitions 6/23 dead transitions. [2020-10-16 06:06:43,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 23 transitions, 157 flow [2020-10-16 06:06:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 06:06:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-16 06:06:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 570 transitions. [2020-10-16 06:06:43,603 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.31808035714285715 [2020-10-16 06:06:43,603 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 570 transitions. [2020-10-16 06:06:43,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 570 transitions. [2020-10-16 06:06:43,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:43,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 570 transitions. [2020-10-16 06:06:43,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-16 06:06:43,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-16 06:06:43,607 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-16 06:06:43,607 INFO L185 Difference]: Start difference. First operand has 48 places, 16 transitions, 84 flow. Second operand 14 states and 570 transitions. [2020-10-16 06:06:43,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 23 transitions, 157 flow [2020-10-16 06:06:43,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 104 flow, removed 15 selfloop flow, removed 18 redundant places. [2020-10-16 06:06:43,609 INFO L241 Difference]: Finished difference. Result has 36 places, 16 transitions, 71 flow [2020-10-16 06:06:43,609 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=71, PETRI_PLACES=36, PETRI_TRANSITIONS=16} [2020-10-16 06:06:43,609 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 13 predicate places. [2020-10-16 06:06:43,609 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 16 transitions, 71 flow [2020-10-16 06:06:43,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 06:06:43,610 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:43,610 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:43,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 06:06:43,610 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 06:06:43,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash 673258349, now seen corresponding path program 8 times [2020-10-16 06:06:43,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:43,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791294661] [2020-10-16 06:06:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:06:43,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791294661] [2020-10-16 06:06:43,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:06:43,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 06:06:43,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277846277] [2020-10-16 06:06:43,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 06:06:43,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:43,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 06:06:43,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-16 06:06:43,824 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 128 [2020-10-16 06:06:43,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 16 transitions, 71 flow. Second operand 14 states. [2020-10-16 06:06:43,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:43,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 128 [2020-10-16 06:06:43,825 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:44,261 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2020-10-16 06:06:44,261 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 06:06:44,261 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 17 events. 2/17 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2020-10-16 06:06:44,262 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2020-10-16 06:06:44,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 16 transitions, 101 flow [2020-10-16 06:06:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 06:06:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-16 06:06:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 563 transitions. [2020-10-16 06:06:44,264 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.31417410714285715 [2020-10-16 06:06:44,264 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 563 transitions. [2020-10-16 06:06:44,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 563 transitions. [2020-10-16 06:06:44,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:44,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 563 transitions. [2020-10-16 06:06:44,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-16 06:06:44,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-16 06:06:44,268 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-16 06:06:44,268 INFO L185 Difference]: Start difference. First operand has 36 places, 16 transitions, 71 flow. Second operand 14 states and 563 transitions. [2020-10-16 06:06:44,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 16 transitions, 101 flow [2020-10-16 06:06:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 16 transitions, 75 flow, removed 2 selfloop flow, removed 12 redundant places. [2020-10-16 06:06:44,269 INFO L241 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2020-10-16 06:06:44,269 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2020-10-16 06:06:44,269 INFO L342 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2020-10-16 06:06:44,269 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2020-10-16 06:06:44,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 06:06:44,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 06:06:44,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 06:06:44 BasicIcfg [2020-10-16 06:06:44,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 06:06:44,276 INFO L168 Benchmark]: Toolchain (without parser) took 10571.45 ms. Allocated memory was 253.2 MB in the beginning and 487.1 MB in the end (delta: 233.8 MB). Free memory was 209.0 MB in the beginning and 446.3 MB in the end (delta: -237.3 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 06:06:44,276 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 06:06:44,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.55 ms. Allocated memory was 253.2 MB in the beginning and 321.4 MB in the end (delta: 68.2 MB). Free memory was 209.0 MB in the beginning and 295.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 14.2 GB. [2020-10-16 06:06:44,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.21 ms. Allocated memory is still 321.4 MB. Free memory was 295.5 MB in the beginning and 293.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 06:06:44,279 INFO L168 Benchmark]: Boogie Preprocessor took 22.88 ms. Allocated memory is still 321.4 MB. Free memory was 293.0 MB in the beginning and 290.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 06:06:44,279 INFO L168 Benchmark]: RCFGBuilder took 376.80 ms. Allocated memory is still 321.4 MB. Free memory was 290.5 MB in the beginning and 267.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 14.2 GB. [2020-10-16 06:06:44,280 INFO L168 Benchmark]: TraceAbstraction took 9800.77 ms. Allocated memory was 321.4 MB in the beginning and 487.1 MB in the end (delta: 165.7 MB). Free memory was 267.4 MB in the beginning and 446.3 MB in the end (delta: -178.9 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 06:06:44,284 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 332.55 ms. Allocated memory was 253.2 MB in the beginning and 321.4 MB in the end (delta: 68.2 MB). Free memory was 209.0 MB in the beginning and 295.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 33.21 ms. Allocated memory is still 321.4 MB. Free memory was 295.5 MB in the beginning and 293.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 22.88 ms. Allocated memory is still 321.4 MB. Free memory was 293.0 MB in the beginning and 290.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 376.80 ms. Allocated memory is still 321.4 MB. Free memory was 290.5 MB in the beginning and 267.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 9800.77 ms. Allocated memory was 321.4 MB in the beginning and 487.1 MB in the end (delta: 165.7 MB). Free memory was 267.4 MB in the beginning and 446.3 MB in the end (delta: -178.9 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 206 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 63 PlacesBefore, 23 PlacesAfterwards, 59 TransitionsBefore, 19 TransitionsAfterwards, 294 CoEnabledTransitionPairs, 4 FixpointIterations, 8 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 881 MoverChecksTotal - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 9.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 116 SDtfs, 356 SDslu, 263 SDs, 0 SdLazy, 2096 SolverSat, 156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 33015 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 correct! Received shutdown request...