/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:20:57,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:20:57,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:20:57,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:20:57,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:20:57,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:20:57,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:20:57,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:20:57,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:20:57,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:20:57,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:20:57,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:20:57,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:20:57,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:20:57,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:20:57,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:20:57,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:20:57,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:20:57,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:20:57,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:20:57,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:20:57,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:20:57,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:20:57,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:20:57,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 20:20:57,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 20:20:57,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 20:20:57,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 20:20:57,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 20:20:57,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 20:20:57,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:20:57,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:20:57,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:20:57,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:20:57,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:20:57,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:20:57,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:20:57,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:20:57,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:20:57,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:20:57,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:20:57,932 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 [2021-03-11 20:20:57,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:20:57,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:20:57,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:20:57,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:20:57,946 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:20:57,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:20:57,947 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:20:57,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:20:57,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:20:57,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:20:57,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:20:57,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:20:57,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:20:57,948 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:20:57,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:20:57,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:20:57,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:20:57,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:20:57,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:20:57,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:20:57,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:20:57,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:20:57,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:20:57,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:20:57,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:20:57,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:20:57,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:20:57,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:20:57,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:20:58,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:20:58,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:20:58,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:20:58,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:20:58,184 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:20:58,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-03-11 20:20:58,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b468a2674/0620f68f3ff54170a263216c0b936d4f/FLAGd15a76f63 [2021-03-11 20:20:58,672 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:20:58,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-03-11 20:20:58,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b468a2674/0620f68f3ff54170a263216c0b936d4f/FLAGd15a76f63 [2021-03-11 20:20:58,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b468a2674/0620f68f3ff54170a263216c0b936d4f [2021-03-11 20:20:58,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:20:58,697 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:20:58,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:20:58,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:20:58,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:20:58,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:20:58" (1/1) ... [2021-03-11 20:20:58,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d790a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:58, skipping insertion in model container [2021-03-11 20:20:58,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:20:58" (1/1) ... [2021-03-11 20:20:58,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:20:58,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:20:58,892 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i[950,963] [2021-03-11 20:20:59,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:20:59,022 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:20:59,029 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i[950,963] [2021-03-11 20:20:59,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:20:59,107 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:20:59,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59 WrapperNode [2021-03-11 20:20:59,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:20:59,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:20:59,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:20:59,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:20:59,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:20:59,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:20:59,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:20:59,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:20:59,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (1/1) ... [2021-03-11 20:20:59,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:20:59,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:20:59,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:20:59,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:20:59,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (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 [2021-03-11 20:20:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:20:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:20:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:20:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:20:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:20:59,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:20:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:20:59,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:20:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:20:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:20:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:20:59,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:20:59,204 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:20:59,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:20:59,460 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:20:59,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:20:59 BoogieIcfgContainer [2021-03-11 20:20:59,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:20:59,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:20:59,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:20:59,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:20:59,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:20:58" (1/3) ... [2021-03-11 20:20:59,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b42cae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:20:59, skipping insertion in model container [2021-03-11 20:20:59,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:59" (2/3) ... [2021-03-11 20:20:59,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b42cae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:20:59, skipping insertion in model container [2021-03-11 20:20:59,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:20:59" (3/3) ... [2021-03-11 20:20:59,468 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc.i [2021-03-11 20:20:59,471 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:20:59,474 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:20:59,474 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:20:59,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,496 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,496 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,497 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,497 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,498 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,498 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,504 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,505 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:59,507 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:20:59,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 20:20:59,540 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:20:59,540 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:20:59,540 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:20:59,540 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:20:59,541 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:20:59,541 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:20:59,541 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:20:59,541 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:20:59,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 20:20:59,582 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-11 20:20:59,582 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:20:59,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 20:20:59,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 20:20:59,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-03-11 20:20:59,591 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:20:59,596 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-11 20:20:59,598 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-11 20:20:59,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-03-11 20:20:59,616 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-03-11 20:20:59,616 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:20:59,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-11 20:20:59,625 INFO L116 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-11 20:21:01,050 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:21:01,241 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:21:01,302 INFO L131 LiptonReduction]: Checked pairs total: 782 [2021-03-11 20:21:01,302 INFO L133 LiptonReduction]: Total number of compositions: 39 [2021-03-11 20:21:01,303 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1715 [2021-03-11 20:21:01,309 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-11 20:21:01,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:21:01,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:21:01,310 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 20:21:01,310 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:21:01,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:21:01,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1999328934, now seen corresponding path program 1 times [2021-03-11 20:21:01,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:21:01,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111173012] [2021-03-11 20:21:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:21:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:21:01,431 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:21:01,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:21:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:21:01,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111173012] [2021-03-11 20:21:01,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:21:01,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:21:01,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597010294] [2021-03-11 20:21:01,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:21:01,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:21:01,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:21:01,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:21:01,463 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 100 [2021-03-11 20:21:01,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-03-11 20:21:01,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:21:01,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 100 [2021-03-11 20:21:01,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:21:01,481 INFO L129 PetriNetUnfolder]: 3/22 cut-off events. [2021-03-11 20:21:01,481 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:21:01,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 1 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 31. Up to 10 conditions per place. [2021-03-11 20:21:01,482 INFO L132 encePairwiseOnDemand]: 96/100 looper letters, 3 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2021-03-11 20:21:01,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 46 flow [2021-03-11 20:21:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:21:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:21:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2021-03-11 20:21:01,490 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2021-03-11 20:21:01,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2021-03-11 20:21:01,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2021-03-11 20:21:01,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:21:01,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2021-03-11 20:21:01,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2021-03-11 20:21:01,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2021-03-11 20:21:01,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2021-03-11 20:21:01,498 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 229 transitions. [2021-03-11 20:21:01,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 46 flow [2021-03-11 20:21:01,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:21:01,501 INFO L241 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2021-03-11 20:21:01,502 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2021-03-11 20:21:01,502 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2021-03-11 20:21:01,502 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2021-03-11 20:21:01,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-03-11 20:21:01,503 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:21:01,503 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:21:01,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:21:01,503 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:21:01,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:21:01,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1849654279, now seen corresponding path program 1 times [2021-03-11 20:21:01,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:21:01,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703221682] [2021-03-11 20:21:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:21:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:21:01,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:21:01,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:21:01,561 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:21:01,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:21:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:21:01,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703221682] [2021-03-11 20:21:01,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:21:01,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:21:01,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983673417] [2021-03-11 20:21:01,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:21:01,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:21:01,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:21:01,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:21:01,570 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2021-03-11 20:21:01,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2021-03-11 20:21:01,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:21:01,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2021-03-11 20:21:01,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:21:01,594 INFO L129 PetriNetUnfolder]: 4/34 cut-off events. [2021-03-11 20:21:01,594 INFO L130 PetriNetUnfolder]: For 9/12 co-relation queries the response was YES. [2021-03-11 20:21:01,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 34 events. 4/34 cut-off events. For 9/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 98 event pairs, 0 based on Foata normal form. 3/37 useless extension candidates. Maximal degree in co-relation 64. Up to 12 conditions per place. [2021-03-11 20:21:01,595 INFO L132 encePairwiseOnDemand]: 95/100 looper letters, 4 selfloop transitions, 6 changer transitions 0/17 dead transitions. [2021-03-11 20:21:01,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 77 flow [2021-03-11 20:21:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:21:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:21:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2021-03-11 20:21:01,597 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.732 [2021-03-11 20:21:01,597 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 366 transitions. [2021-03-11 20:21:01,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 366 transitions. [2021-03-11 20:21:01,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:21:01,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 366 transitions. [2021-03-11 20:21:01,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2021-03-11 20:21:01,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2021-03-11 20:21:01,600 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2021-03-11 20:21:01,600 INFO L185 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 5 states and 366 transitions. [2021-03-11 20:21:01,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 77 flow [2021-03-11 20:21:01,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:21:01,601 INFO L241 Difference]: Finished difference. Result has 26 places, 16 transitions, 78 flow [2021-03-11 20:21:01,601 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2021-03-11 20:21:01,601 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2021-03-11 20:21:01,602 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 78 flow [2021-03-11 20:21:01,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2021-03-11 20:21:01,602 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:21:01,602 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:21:01,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:21:01,602 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:21:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:21:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1849653907, now seen corresponding path program 1 times [2021-03-11 20:21:01,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:21:01,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795298207] [2021-03-11 20:21:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:21:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:21:01,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:21:01,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:21:01,630 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:21:01,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:21:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:21:01,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795298207] [2021-03-11 20:21:01,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:21:01,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:21:01,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855950084] [2021-03-11 20:21:01,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:21:01,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:21:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:21:01,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:21:01,636 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 100 [2021-03-11 20:21:01,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2021-03-11 20:21:01,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:21:01,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 100 [2021-03-11 20:21:01,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:21:01,645 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-03-11 20:21:01,645 INFO L130 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2021-03-11 20:21:01,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 21 events. 1/21 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 3/24 useless extension candidates. Maximal degree in co-relation 48. Up to 7 conditions per place. [2021-03-11 20:21:01,645 INFO L132 encePairwiseOnDemand]: 97/100 looper letters, 3 selfloop transitions, 3 changer transitions 2/16 dead transitions. [2021-03-11 20:21:01,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 16 transitions, 92 flow [2021-03-11 20:21:01,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:21:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:21:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2021-03-11 20:21:01,647 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76 [2021-03-11 20:21:01,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2021-03-11 20:21:01,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2021-03-11 20:21:01,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:21:01,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2021-03-11 20:21:01,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2021-03-11 20:21:01,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2021-03-11 20:21:01,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2021-03-11 20:21:01,649 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 78 flow. Second operand 3 states and 228 transitions. [2021-03-11 20:21:01,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 16 transitions, 92 flow [2021-03-11 20:21:01,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:21:01,650 INFO L241 Difference]: Finished difference. Result has 28 places, 14 transitions, 73 flow [2021-03-11 20:21:01,650 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=28, PETRI_TRANSITIONS=14} [2021-03-11 20:21:01,650 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2021-03-11 20:21:01,650 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 14 transitions, 73 flow [2021-03-11 20:21:01,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2021-03-11 20:21:01,651 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:21:01,651 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:21:01,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:21:01,651 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:21:01,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:21:01,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1504706898, now seen corresponding path program 1 times [2021-03-11 20:21:01,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:21:01,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396712627] [2021-03-11 20:21:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:21:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:21:01,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:21:01,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:21:01,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:21:01,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:21:01,705 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:21:01,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:21:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:21:01,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396712627] [2021-03-11 20:21:01,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:21:01,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:21:01,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021623233] [2021-03-11 20:21:01,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:21:01,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:21:01,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:21:01,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:21:01,714 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2021-03-11 20:21:01,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 14 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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) [2021-03-11 20:21:01,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:21:01,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2021-03-11 20:21:01,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:21:01,731 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-11 20:21:01,731 INFO L130 PetriNetUnfolder]: For 34/36 co-relation queries the response was YES. [2021-03-11 20:21:01,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 18 events. 0/18 cut-off events. For 34/36 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 2/20 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-11 20:21:01,732 INFO L132 encePairwiseOnDemand]: 96/100 looper letters, 2 selfloop transitions, 3 changer transitions 2/14 dead transitions. [2021-03-11 20:21:01,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 87 flow [2021-03-11 20:21:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:21:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:21:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2021-03-11 20:21:01,733 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.73 [2021-03-11 20:21:01,733 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2021-03-11 20:21:01,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2021-03-11 20:21:01,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:21:01,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2021-03-11 20:21:01,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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) [2021-03-11 20:21:01,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2021-03-11 20:21:01,737 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2021-03-11 20:21:01,737 INFO L185 Difference]: Start difference. First operand has 28 places, 14 transitions, 73 flow. Second operand 4 states and 292 transitions. [2021-03-11 20:21:01,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 87 flow [2021-03-11 20:21:01,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 14 transitions, 73 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-11 20:21:01,738 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 62 flow [2021-03-11 20:21:01,739 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=12} [2021-03-11 20:21:01,739 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2021-03-11 20:21:01,739 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 12 transitions, 62 flow [2021-03-11 20:21:01,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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) [2021-03-11 20:21:01,739 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:21:01,739 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:21:01,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:21:01,740 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:21:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:21:01,740 INFO L82 PathProgramCache]: Analyzing trace with hash -627969590, now seen corresponding path program 1 times [2021-03-11 20:21:01,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:21:01,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674780044] [2021-03-11 20:21:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:21:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:21:01,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:21:01,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:21:01,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:21:01,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:21:01,775 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:21:01,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:21:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:21:01,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674780044] [2021-03-11 20:21:01,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:21:01,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:21:01,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441422779] [2021-03-11 20:21:01,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:21:01,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:21:01,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:21:01,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:21:01,781 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2021-03-11 20:21:01,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 12 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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) [2021-03-11 20:21:01,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:21:01,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2021-03-11 20:21:01,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:21:01,790 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-11 20:21:01,790 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2021-03-11 20:21:01,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 11 events. 0/11 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 20:21:01,790 INFO L132 encePairwiseOnDemand]: 97/100 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2021-03-11 20:21:01,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 11 transitions, 58 flow [2021-03-11 20:21:01,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:21:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:21:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2021-03-11 20:21:01,791 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.725 [2021-03-11 20:21:01,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2021-03-11 20:21:01,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2021-03-11 20:21:01,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:21:01,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2021-03-11 20:21:01,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 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) [2021-03-11 20:21:01,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2021-03-11 20:21:01,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2021-03-11 20:21:01,793 INFO L185 Difference]: Start difference. First operand has 27 places, 12 transitions, 62 flow. Second operand 4 states and 290 transitions. [2021-03-11 20:21:01,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 11 transitions, 58 flow [2021-03-11 20:21:01,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 11 transitions, 34 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-03-11 20:21:01,793 INFO L241 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2021-03-11 20:21:01,793 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2021-03-11 20:21:01,793 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 0 predicate places. [2021-03-11 20:21:01,794 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2021-03-11 20:21:01,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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) [2021-03-11 20:21:01,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:21:01,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:21:01 BasicIcfg [2021-03-11 20:21:01,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:21:01,797 INFO L168 Benchmark]: Toolchain (without parser) took 3102.61 ms. Allocated memory was 255.9 MB in the beginning and 444.6 MB in the end (delta: 188.7 MB). Free memory was 237.1 MB in the beginning and 315.8 MB in the end (delta: -78.8 MB). Peak memory consumption was 108.4 MB. Max. memory is 16.0 GB. [2021-03-11 20:21:01,797 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:21:01,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.55 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 236.5 MB in the beginning and 331.9 MB in the end (delta: -95.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:21:01,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.31 ms. Allocated memory is still 369.1 MB. Free memory was 331.9 MB in the beginning and 329.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:21:01,798 INFO L168 Benchmark]: Boogie Preprocessor took 21.23 ms. Allocated memory is still 369.1 MB. Free memory was 329.9 MB in the beginning and 329.0 MB in the end (delta: 851.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:21:01,799 INFO L168 Benchmark]: RCFGBuilder took 300.21 ms. Allocated memory is still 369.1 MB. Free memory was 329.0 MB in the beginning and 308.9 MB in the end (delta: 20.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:21:01,799 INFO L168 Benchmark]: TraceAbstraction took 2332.27 ms. Allocated memory was 369.1 MB in the beginning and 444.6 MB in the end (delta: 75.5 MB). Free memory was 308.9 MB in the beginning and 315.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 68.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:21:01,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 410.55 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 236.5 MB in the beginning and 331.9 MB in the end (delta: -95.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.31 ms. Allocated memory is still 369.1 MB. Free memory was 331.9 MB in the beginning and 329.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.23 ms. Allocated memory is still 369.1 MB. Free memory was 329.9 MB in the beginning and 329.0 MB in the end (delta: 851.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 300.21 ms. Allocated memory is still 369.1 MB. Free memory was 329.0 MB in the beginning and 308.9 MB in the end (delta: 20.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2332.27 ms. Allocated memory was 369.1 MB in the beginning and 444.6 MB in the end (delta: 75.5 MB). Free memory was 308.9 MB in the beginning and 315.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 68.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1704.2ms, 55 PlacesBefore, 19 PlacesAfterwards, 49 TransitionsBefore, 12 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 39 TotalNumberOfCompositions, 782 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 491, positive: 439, positive conditional: 0, positive unconditional: 439, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 333, positive: 313, positive conditional: 0, positive unconditional: 313, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 333, positive: 309, positive conditional: 0, positive unconditional: 309, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 95, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 491, positive: 126, positive conditional: 0, positive unconditional: 126, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 333, unknown conditional: 0, unknown unconditional: 333] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2257.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 129.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1765.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 11 SDslu, 4 SDs, 0 SdLazy, 25 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=2, InterpolantAutomatonStates: 19, 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: 9.7ms SsaConstructionTime, 56.0ms SatisfiabilityAnalysisTime, 190.1ms InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...