/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 20:00:05,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 20:00:05,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 20:00:05,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 20:00:05,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 20:00:05,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 20:00:05,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 20:00:05,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 20:00:05,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 20:00:05,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 20:00:05,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 20:00:05,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 20:00:05,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 20:00:05,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 20:00:05,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 20:00:05,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 20:00:06,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 20:00:06,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 20:00:06,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 20:00:06,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 20:00:06,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 20:00:06,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 20:00:06,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 20:00:06,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 20:00:06,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 20:00:06,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 20:00:06,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 20:00:06,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 20:00:06,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 20:00:06,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 20:00:06,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 20:00:06,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 20:00:06,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 20:00:06,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 20:00:06,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 20:00:06,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 20:00:06,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 20:00:06,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 20:00:06,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 20:00:06,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 20:00:06,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 20:00:06,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 20:00:06,070 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 20:00:06,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 20:00:06,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 20:00:06,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 20:00:06,074 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 20:00:06,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 20:00:06,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 20:00:06,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 20:00:06,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 20:00:06,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 20:00:06,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 20:00:06,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 20:00:06,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 20:00:06,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 20:00:06,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 20:00:06,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 20:00:06,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 20:00:06,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 20:00:06,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 20:00:06,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 20:00:06,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 20:00:06,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 20:00:06,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 20:00:06,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 20:00:06,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 20:00:06,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 20:00:06,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 20:00:06,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 20:00:06,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 20:00:06,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 20:00:06,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 20:00:06,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 20:00:06,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 20:00:06,449 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 20:00:06,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2021-03-24 20:00:06,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/725094a26/1c424805fc0c4d519c1e02e293887ed7/FLAG4b9e2dfc2 [2021-03-24 20:00:07,024 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 20:00:07,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2021-03-24 20:00:07,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/725094a26/1c424805fc0c4d519c1e02e293887ed7/FLAG4b9e2dfc2 [2021-03-24 20:00:07,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/725094a26/1c424805fc0c4d519c1e02e293887ed7 [2021-03-24 20:00:07,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 20:00:07,481 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 20:00:07,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 20:00:07,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 20:00:07,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 20:00:07,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:07,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77673a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07, skipping insertion in model container [2021-03-24 20:00:07,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:07,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 20:00:07,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 20:00:07,814 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i[30003,30016] [2021-03-24 20:00:07,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 20:00:07,843 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 20:00:07,888 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i[30003,30016] [2021-03-24 20:00:07,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 20:00:07,973 INFO L208 MainTranslator]: Completed translation [2021-03-24 20:00:07,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07 WrapperNode [2021-03-24 20:00:07,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 20:00:07,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 20:00:07,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 20:00:07,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 20:00:07,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 20:00:08,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 20:00:08,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 20:00:08,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 20:00:08,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... [2021-03-24 20:00:08,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 20:00:08,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 20:00:08,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 20:00:08,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 20:00:08,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 20:00:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-03-24 20:00:08,133 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-03-24 20:00:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 20:00:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 20:00:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 20:00:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 20:00:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 20:00:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 20:00:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 20:00:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 20:00:08,137 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 20:00:08,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 20:00:08,611 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-03-24 20:00:08,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 08:00:08 BoogieIcfgContainer [2021-03-24 20:00:08,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 20:00:08,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 20:00:08,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 20:00:08,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 20:00:08,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 08:00:07" (1/3) ... [2021-03-24 20:00:08,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4841963e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 08:00:08, skipping insertion in model container [2021-03-24 20:00:08,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:00:07" (2/3) ... [2021-03-24 20:00:08,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4841963e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 08:00:08, skipping insertion in model container [2021-03-24 20:00:08,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 08:00:08" (3/3) ... [2021-03-24 20:00:08,619 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2021-03-24 20:00:08,626 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 20:00:08,632 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 20:00:08,633 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 20:00:08,670 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,670 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,671 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,671 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,671 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,671 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,671 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,671 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,672 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,672 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,672 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,672 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,672 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,672 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,673 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,673 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,673 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,673 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,673 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,673 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,673 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,674 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,674 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,674 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,674 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,674 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,674 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,674 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,675 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,676 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,676 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,676 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,676 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,676 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,677 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,677 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,678 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,679 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,679 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,679 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,680 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,680 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,680 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,680 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,680 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,680 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,681 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,681 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,682 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,682 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,682 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,682 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,682 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,682 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,684 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,684 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,684 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,685 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,685 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,686 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:00:08,688 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 20:00:08,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-24 20:00:08,727 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 20:00:08,728 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 20:00:08,728 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 20:00:08,728 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 20:00:08,728 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 20:00:08,728 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 20:00:08,728 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 20:00:08,728 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 20:00:08,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 187 flow [2021-03-24 20:00:08,785 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-03-24 20:00:08,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 20:00:08,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 6/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2021-03-24 20:00:08,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 91 transitions, 187 flow [2021-03-24 20:00:08,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 90 transitions, 183 flow [2021-03-24 20:00:08,800 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 20:00:08,810 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 90 transitions, 183 flow [2021-03-24 20:00:08,812 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 90 transitions, 183 flow [2021-03-24 20:00:08,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 90 transitions, 183 flow [2021-03-24 20:00:08,832 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-03-24 20:00:08,832 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 20:00:08,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 6/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2021-03-24 20:00:08,841 INFO L142 LiptonReduction]: Number of co-enabled transitions 2208 [2021-03-24 20:00:10,472 INFO L154 LiptonReduction]: Checked pairs total: 1713 [2021-03-24 20:00:10,473 INFO L156 LiptonReduction]: Total number of compositions: 76 [2021-03-24 20:00:10,475 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1676 [2021-03-24 20:00:10,484 INFO L129 PetriNetUnfolder]: 3/20 cut-off events. [2021-03-24 20:00:10,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 20:00:10,484 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 20:00:10,485 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 20:00:10,485 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 20:00:10,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 20:00:10,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1960777286, now seen corresponding path program 1 times [2021-03-24 20:00:10,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 20:00:10,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670785725] [2021-03-24 20:00:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 20:00:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 20:00:10,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:10,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 20:00:10,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 20:00:10,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670785725] [2021-03-24 20:00:10,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 20:00:10,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 20:00:10,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795708159] [2021-03-24 20:00:10,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 20:00:10,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 20:00:10,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 20:00:10,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 20:00:10,652 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 167 [2021-03-24 20:00:10,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 20:00:10,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 167 [2021-03-24 20:00:10,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 20:00:10,682 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2021-03-24 20:00:10,683 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 20:00:10,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 251 event pairs, 0 based on Foata normal form. 8/61 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2021-03-24 20:00:10,684 INFO L132 encePairwiseOnDemand]: 161/167 looper letters, 3 selfloop transitions, 3 changer transitions 10/31 dead transitions. [2021-03-24 20:00:10,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 77 flow [2021-03-24 20:00:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 20:00:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 20:00:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2021-03-24 20:00:10,696 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8782435129740519 [2021-03-24 20:00:10,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2021-03-24 20:00:10,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2021-03-24 20:00:10,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 20:00:10,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2021-03-24 20:00:10,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,712 INFO L185 Difference]: Start difference. First operand has 33 places, 34 transitions, 71 flow. Second operand 3 states and 440 transitions. [2021-03-24 20:00:10,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 77 flow [2021-03-24 20:00:10,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 20:00:10,716 INFO L241 Difference]: Finished difference. Result has 34 places, 21 transitions, 60 flow [2021-03-24 20:00:10,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2021-03-24 20:00:10,719 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2021-03-24 20:00:10,719 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 60 flow [2021-03-24 20:00:10,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 20:00:10,719 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 20:00:10,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 20:00:10,720 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 20:00:10,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 20:00:10,720 INFO L82 PathProgramCache]: Analyzing trace with hash -666673387, now seen corresponding path program 1 times [2021-03-24 20:00:10,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 20:00:10,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649794653] [2021-03-24 20:00:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 20:00:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 20:00:10,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:10,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 20:00:10,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 20:00:10,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649794653] [2021-03-24 20:00:10,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 20:00:10,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 20:00:10,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652987185] [2021-03-24 20:00:10,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 20:00:10,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 20:00:10,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 20:00:10,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 20:00:10,819 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 167 [2021-03-24 20:00:10,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 20:00:10,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 167 [2021-03-24 20:00:10,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 20:00:10,839 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-24 20:00:10,840 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 20:00:10,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 32 events. 0/32 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-24 20:00:10,843 INFO L132 encePairwiseOnDemand]: 165/167 looper letters, 3 selfloop transitions, 0 changer transitions 2/21 dead transitions. [2021-03-24 20:00:10,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 70 flow [2021-03-24 20:00:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 20:00:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 20:00:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2021-03-24 20:00:10,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8682634730538922 [2021-03-24 20:00:10,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2021-03-24 20:00:10,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2021-03-24 20:00:10,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 20:00:10,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2021-03-24 20:00:10,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,854 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 60 flow. Second operand 3 states and 435 transitions. [2021-03-24 20:00:10,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 70 flow [2021-03-24 20:00:10,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 20:00:10,855 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 50 flow [2021-03-24 20:00:10,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2021-03-24 20:00:10,856 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, -6 predicate places. [2021-03-24 20:00:10,856 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 50 flow [2021-03-24 20:00:10,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,857 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 20:00:10,857 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 20:00:10,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 20:00:10,858 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 20:00:10,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 20:00:10,859 INFO L82 PathProgramCache]: Analyzing trace with hash -654481180, now seen corresponding path program 1 times [2021-03-24 20:00:10,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 20:00:10,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144566859] [2021-03-24 20:00:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 20:00:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 20:00:10,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:10,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 20:00:10,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:10,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 20:00:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 20:00:10,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144566859] [2021-03-24 20:00:10,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 20:00:10,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 20:00:10,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610332804] [2021-03-24 20:00:10,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 20:00:10,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 20:00:10,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 20:00:10,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 20:00:10,965 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 167 [2021-03-24 20:00:10,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 20:00:10,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 167 [2021-03-24 20:00:10,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 20:00:10,990 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-03-24 20:00:10,990 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 20:00:10,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 36 events. 0/36 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-24 20:00:10,990 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 3 selfloop transitions, 2 changer transitions 3/21 dead transitions. [2021-03-24 20:00:10,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 70 flow [2021-03-24 20:00:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 20:00:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 20:00:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 724 transitions. [2021-03-24 20:00:10,993 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8670658682634731 [2021-03-24 20:00:10,993 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 724 transitions. [2021-03-24 20:00:10,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 724 transitions. [2021-03-24 20:00:10,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 20:00:10,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 724 transitions. [2021-03-24 20:00:10,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.8) internal successors, (724), 5 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,998 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:10,998 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 50 flow. Second operand 5 states and 724 transitions. [2021-03-24 20:00:10,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 70 flow [2021-03-24 20:00:10,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 66 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-24 20:00:10,999 INFO L241 Difference]: Finished difference. Result has 31 places, 18 transitions, 58 flow [2021-03-24 20:00:11,000 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2021-03-24 20:00:11,000 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2021-03-24 20:00:11,000 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 58 flow [2021-03-24 20:00:11,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,001 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 20:00:11,001 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 20:00:11,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 20:00:11,001 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 20:00:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 20:00:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1776868946, now seen corresponding path program 1 times [2021-03-24 20:00:11,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 20:00:11,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188198947] [2021-03-24 20:00:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 20:00:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 20:00:11,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:11,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 20:00:11,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 20:00:11,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188198947] [2021-03-24 20:00:11,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 20:00:11,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 20:00:11,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565288243] [2021-03-24 20:00:11,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 20:00:11,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 20:00:11,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 20:00:11,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 20:00:11,048 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 167 [2021-03-24 20:00:11,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 20:00:11,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 167 [2021-03-24 20:00:11,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 20:00:11,059 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-24 20:00:11,059 INFO L130 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2021-03-24 20:00:11,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 24 events. 0/24 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-24 20:00:11,060 INFO L132 encePairwiseOnDemand]: 165/167 looper letters, 3 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2021-03-24 20:00:11,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 62 flow [2021-03-24 20:00:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 20:00:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 20:00:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2021-03-24 20:00:11,062 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8662674650698603 [2021-03-24 20:00:11,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2021-03-24 20:00:11,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2021-03-24 20:00:11,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 20:00:11,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2021-03-24 20:00:11,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,065 INFO L185 Difference]: Start difference. First operand has 31 places, 18 transitions, 58 flow. Second operand 3 states and 434 transitions. [2021-03-24 20:00:11,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 62 flow [2021-03-24 20:00:11,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 52 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-24 20:00:11,067 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2021-03-24 20:00:11,067 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-03-24 20:00:11,067 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2021-03-24 20:00:11,067 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 46 flow [2021-03-24 20:00:11,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,068 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 20:00:11,068 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 20:00:11,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 20:00:11,068 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 20:00:11,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 20:00:11,069 INFO L82 PathProgramCache]: Analyzing trace with hash 429132562, now seen corresponding path program 2 times [2021-03-24 20:00:11,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 20:00:11,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700315869] [2021-03-24 20:00:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 20:00:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 20:00:11,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:11,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 20:00:11,137 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-24 20:00:11,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 20:00:11,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 20:00:11,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 20:00:11,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 20:00:11,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 20:00:11,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 20:00:11,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:00:11,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:00:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 20:00:11,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700315869] [2021-03-24 20:00:11,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 20:00:11,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 20:00:11,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637820564] [2021-03-24 20:00:11,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 20:00:11,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 20:00:11,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 20:00:11,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-03-24 20:00:11,192 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 167 [2021-03-24 20:00:11,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 46 flow. Second operand has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 20:00:11,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 167 [2021-03-24 20:00:11,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 20:00:11,265 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 20:00:11,266 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-03-24 20:00:11,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 20 events. 0/20 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-24 20:00:11,266 INFO L132 encePairwiseOnDemand]: 159/167 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-03-24 20:00:11,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 20 transitions, 85 flow [2021-03-24 20:00:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 20:00:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 20:00:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 971 transitions. [2021-03-24 20:00:11,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.64604125083167 [2021-03-24 20:00:11,275 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 971 transitions. [2021-03-24 20:00:11,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 971 transitions. [2021-03-24 20:00:11,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 20:00:11,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 971 transitions. [2021-03-24 20:00:11,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,282 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,282 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 46 flow. Second operand 9 states and 971 transitions. [2021-03-24 20:00:11,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 20 transitions, 85 flow [2021-03-24 20:00:11,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 81 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 20:00:11,283 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-24 20:00:11,283 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, 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=9, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-24 20:00:11,283 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2021-03-24 20:00:11,284 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2021-03-24 20:00:11,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 20:00:11,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 20:00:11,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 08:00:11 BasicIcfg [2021-03-24 20:00:11,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 20:00:11,289 INFO L168 Benchmark]: Toolchain (without parser) took 3807.65 ms. Allocated memory was 255.9 MB in the beginning and 450.9 MB in the end (delta: 195.0 MB). Free memory was 232.9 MB in the beginning and 325.5 MB in the end (delta: -92.7 MB). Peak memory consumption was 100.9 MB. Max. memory is 16.0 GB. [2021-03-24 20:00:11,289 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 20:00:11,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.34 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 232.9 MB in the beginning and 338.8 MB in the end (delta: -105.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-24 20:00:11,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.06 ms. Allocated memory is still 375.4 MB. Free memory was 338.8 MB in the beginning and 336.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-24 20:00:11,291 INFO L168 Benchmark]: Boogie Preprocessor took 29.54 ms. Allocated memory is still 375.4 MB. Free memory was 336.8 MB in the beginning and 335.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 20:00:11,293 INFO L168 Benchmark]: RCFGBuilder took 540.87 ms. Allocated memory is still 375.4 MB. Free memory was 335.4 MB in the beginning and 309.5 MB in the end (delta: 25.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-24 20:00:11,294 INFO L168 Benchmark]: TraceAbstraction took 2673.64 ms. Allocated memory was 375.4 MB in the beginning and 450.9 MB in the end (delta: 75.5 MB). Free memory was 308.8 MB in the beginning and 325.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.0 GB. [2021-03-24 20:00:11,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 492.34 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 232.9 MB in the beginning and 338.8 MB in the end (delta: -105.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 66.06 ms. Allocated memory is still 375.4 MB. Free memory was 338.8 MB in the beginning and 336.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.54 ms. Allocated memory is still 375.4 MB. Free memory was 336.8 MB in the beginning and 335.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 540.87 ms. Allocated memory is still 375.4 MB. Free memory was 335.4 MB in the beginning and 309.5 MB in the end (delta: 25.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2673.64 ms. Allocated memory was 375.4 MB in the beginning and 450.9 MB in the end (delta: 75.5 MB). Free memory was 308.8 MB in the beginning and 325.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1660.2ms, 88 PlacesBefore, 33 PlacesAfterwards, 90 TransitionsBefore, 34 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 76 TotalNumberOfCompositions, 1713 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1521, positive: 1504, positive conditional: 0, positive unconditional: 1504, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1329, positive: 1317, positive conditional: 0, positive unconditional: 1317, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1329, positive: 1317, positive conditional: 0, positive unconditional: 1317, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1329, positive: 1315, positive conditional: 0, positive unconditional: 1315, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1521, positive: 187, positive conditional: 0, positive unconditional: 187, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 1329, unknown conditional: 0, unknown unconditional: 1329] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - PositiveResult [Line: 690]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2560.0ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 265.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1751.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 10 SDslu, 36 SDs, 0 SdLazy, 71 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 80.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 83.0ms SatisfiabilityAnalysisTime, 298.3ms InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...