/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:11:05,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:11:05,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:11:05,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:11:05,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:11:05,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:11:05,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:11:05,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:11:05,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:11:05,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:11:05,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:11:05,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:11:05,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:11:05,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:11:05,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:11:05,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:11:05,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:11:05,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:11:05,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:11:05,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:11:05,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:11:05,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:11:05,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:11:05,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:11:05,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:11:05,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:11:05,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:11:05,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:11:05,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:11:05,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:11:05,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:11:05,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:11:05,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:11:05,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:11:05,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:11:05,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:11:05,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:11:05,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:11:05,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:11:05,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:11:05,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:11:05,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:11:05,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:11:05,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:11:05,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:11:05,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:11:05,922 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:11:05,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:11:05,922 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:11:05,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:11:05,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:11:05,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:11:05,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:11:05,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:11:05,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:11:05,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:11:05,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:11:05,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:11:05,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:11:05,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:11:05,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:11:05,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:11:05,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:11:05,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:11:05,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:11:05,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:11:05,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:11:05,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:11:05,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:11:05,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:11:05,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:11:06,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:11:06,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:11:06,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:11:06,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:11:06,259 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:11:06,260 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-10-16 05:11:06,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b7154b9/7a575dba894a42e8883239d652ca4b88/FLAG7f9f3608a [2020-10-16 05:11:06,857 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:11:06,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-10-16 05:11:06,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b7154b9/7a575dba894a42e8883239d652ca4b88/FLAG7f9f3608a [2020-10-16 05:11:07,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b7154b9/7a575dba894a42e8883239d652ca4b88 [2020-10-16 05:11:07,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:11:07,095 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:11:07,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:11:07,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:11:07,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:11:07,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aeaf3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07, skipping insertion in model container [2020-10-16 05:11:07,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:11:07,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:11:07,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:11:07,649 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:11:07,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:11:07,814 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:11:07,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07 WrapperNode [2020-10-16 05:11:07,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:11:07,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:11:07,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:11:07,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:11:07,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:11:07,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:11:07,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:11:07,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:11:07,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:11:07,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:11:07,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:11:07,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:11:07,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (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 [2020-10-16 05:11:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:11:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:11:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:11:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:11:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:11:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:11:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:11:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:11:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:11:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:11:07,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:11:07,967 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:11:08,310 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:11:08,310 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:11:08,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:11:08 BoogieIcfgContainer [2020-10-16 05:11:08,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:11:08,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:11:08,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:11:08,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:11:08,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:11:07" (1/3) ... [2020-10-16 05:11:08,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20617b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:11:08, skipping insertion in model container [2020-10-16 05:11:08,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (2/3) ... [2020-10-16 05:11:08,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20617b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:11:08, skipping insertion in model container [2020-10-16 05:11:08,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:11:08" (3/3) ... [2020-10-16 05:11:08,320 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-10-16 05:11:08,332 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:11:08,339 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:11:08,340 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:11:08,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,365 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,365 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,366 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,366 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,367 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,367 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,368 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,368 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,372 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,373 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,379 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,380 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:08,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 05:11:08,415 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:11:08,415 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:11:08,415 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:11:08,415 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:11:08,415 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:11:08,415 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:11:08,416 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:11:08,416 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:11:08,427 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-10-16 05:11:08,469 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-10-16 05:11:08,469 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:08,474 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 05:11:08,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 120 flow [2020-10-16 05:11:08,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 94 flow [2020-10-16 05:11:08,483 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:11:08,486 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 44 transitions, 94 flow [2020-10-16 05:11:08,488 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 44 transitions, 94 flow [2020-10-16 05:11:08,488 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 50 places, 44 transitions, 94 flow [2020-10-16 05:11:08,504 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-16 05:11:08,505 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:08,505 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 05:11:08,507 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 05:11:09,534 INFO L132 LiptonReduction]: Checked pairs total: 900 [2020-10-16 05:11:09,534 INFO L134 LiptonReduction]: Total number of compositions: 37 [2020-10-16 05:11:09,537 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1057 [2020-10-16 05:11:09,543 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2020-10-16 05:11:09,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:09,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,545 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 05:11:09,546 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,552 INFO L82 PathProgramCache]: Analyzing trace with hash 189686472, now seen corresponding path program 1 times [2020-10-16 05:11:09,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806393965] [2020-10-16 05:11:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:09,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806393965] [2020-10-16 05:11:09,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:09,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:11:09,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355999874] [2020-10-16 05:11:09,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 05:11:09,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:09,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 05:11:09,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 05:11:09,769 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 92 [2020-10-16 05:11:09,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states. [2020-10-16 05:11:09,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:09,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 92 [2020-10-16 05:11:09,773 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:09,782 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 05:11:09,782 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:09,783 INFO L80 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 05:11:09,784 INFO L132 encePairwiseOnDemand]: 91/92 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2020-10-16 05:11:09,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2020-10-16 05:11:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 05:11:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 05:11:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 171 transitions. [2020-10-16 05:11:09,803 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9293478260869565 [2020-10-16 05:11:09,804 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 171 transitions. [2020-10-16 05:11:09,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 171 transitions. [2020-10-16 05:11:09,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:09,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 171 transitions. [2020-10-16 05:11:09,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 05:11:09,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 05:11:09,819 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 05:11:09,821 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 171 transitions. [2020-10-16 05:11:09,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2020-10-16 05:11:09,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:11:09,828 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2020-10-16 05:11:09,831 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2020-10-16 05:11:09,832 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2020-10-16 05:11:09,833 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2020-10-16 05:11:09,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 05:11:09,833 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,833 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 05:11:09,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:11:09,834 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1585313408, now seen corresponding path program 1 times [2020-10-16 05:11:09,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904469808] [2020-10-16 05:11:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:09,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904469808] [2020-10-16 05:11:09,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:09,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:11:09,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954205678] [2020-10-16 05:11:09,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:11:09,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:09,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:11:09,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:11:09,922 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2020-10-16 05:11:09,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states. [2020-10-16 05:11:09,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:09,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2020-10-16 05:11:09,925 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:09,954 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-10-16 05:11:09,954 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:09,955 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 19 events. 3/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 33. Up to 10 conditions per place. [2020-10-16 05:11:09,955 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 3 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2020-10-16 05:11:09,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 44 flow [2020-10-16 05:11:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:11:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:11:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2020-10-16 05:11:09,961 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8079710144927537 [2020-10-16 05:11:09,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2020-10-16 05:11:09,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2020-10-16 05:11:09,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:09,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2020-10-16 05:11:09,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:11:09,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:11:09,970 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:11:09,970 INFO L185 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 223 transitions. [2020-10-16 05:11:09,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 44 flow [2020-10-16 05:11:09,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 44 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 05:11:09,977 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 47 flow [2020-10-16 05:11:09,977 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, 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=21, PETRI_TRANSITIONS=14} [2020-10-16 05:11:09,978 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2020-10-16 05:11:09,978 INFO L481 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 47 flow [2020-10-16 05:11:09,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:11:09,979 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,979 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:09,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:11:09,980 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1888782877, now seen corresponding path program 1 times [2020-10-16 05:11:09,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511683844] [2020-10-16 05:11:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:10,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511683844] [2020-10-16 05:11:10,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:10,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:11:10,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115227185] [2020-10-16 05:11:10,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:10,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:10,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:10,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:10,109 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2020-10-16 05:11:10,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 47 flow. Second operand 4 states. [2020-10-16 05:11:10,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:10,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2020-10-16 05:11:10,109 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:10,153 INFO L129 PetriNetUnfolder]: 9/36 cut-off events. [2020-10-16 05:11:10,154 INFO L130 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2020-10-16 05:11:10,154 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 36 events. 9/36 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 99 event pairs, 3 based on Foata normal form. 10/45 useless extension candidates. Maximal degree in co-relation 79. Up to 19 conditions per place. [2020-10-16 05:11:10,155 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 4 selfloop transitions, 5 changer transitions 3/21 dead transitions. [2020-10-16 05:11:10,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 85 flow [2020-10-16 05:11:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:11:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:11:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 319 transitions. [2020-10-16 05:11:10,158 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6934782608695652 [2020-10-16 05:11:10,158 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 319 transitions. [2020-10-16 05:11:10,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 319 transitions. [2020-10-16 05:11:10,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:10,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 319 transitions. [2020-10-16 05:11:10,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:11:10,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:11:10,162 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:11:10,162 INFO L185 Difference]: Start difference. First operand has 21 places, 14 transitions, 47 flow. Second operand 5 states and 319 transitions. [2020-10-16 05:11:10,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 85 flow [2020-10-16 05:11:10,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:11:10,164 INFO L241 Difference]: Finished difference. Result has 27 places, 18 transitions, 81 flow [2020-10-16 05:11:10,164 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2020-10-16 05:11:10,164 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2020-10-16 05:11:10,165 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 81 flow [2020-10-16 05:11:10,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:10,165 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:10,165 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:10,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:11:10,165 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1580909445, now seen corresponding path program 1 times [2020-10-16 05:11:10,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:10,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863147736] [2020-10-16 05:11:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:10,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863147736] [2020-10-16 05:11:10,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:10,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:10,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329685390] [2020-10-16 05:11:10,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:11:10,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:10,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:11:10,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:11:10,215 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2020-10-16 05:11:10,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 81 flow. Second operand 5 states. [2020-10-16 05:11:10,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:10,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2020-10-16 05:11:10,216 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:10,267 INFO L129 PetriNetUnfolder]: 3/26 cut-off events. [2020-10-16 05:11:10,267 INFO L130 PetriNetUnfolder]: For 51/64 co-relation queries the response was YES. [2020-10-16 05:11:10,268 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 26 events. 3/26 cut-off events. For 51/64 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 17/43 useless extension candidates. Maximal degree in co-relation 80. Up to 12 conditions per place. [2020-10-16 05:11:10,268 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 2 selfloop transitions, 8 changer transitions 2/21 dead transitions. [2020-10-16 05:11:10,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 119 flow [2020-10-16 05:11:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:11:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:11:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 441 transitions. [2020-10-16 05:11:10,271 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2020-10-16 05:11:10,271 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 441 transitions. [2020-10-16 05:11:10,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 441 transitions. [2020-10-16 05:11:10,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:10,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 441 transitions. [2020-10-16 05:11:10,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:11:10,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:11:10,275 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:11:10,275 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 81 flow. Second operand 7 states and 441 transitions. [2020-10-16 05:11:10,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 119 flow [2020-10-16 05:11:10,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 21 transitions, 119 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 05:11:10,278 INFO L241 Difference]: Finished difference. Result has 36 places, 19 transitions, 114 flow [2020-10-16 05:11:10,279 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2020-10-16 05:11:10,279 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 17 predicate places. [2020-10-16 05:11:10,279 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 114 flow [2020-10-16 05:11:10,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:11:10,279 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:10,280 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:10,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:11:10,280 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1153598993, now seen corresponding path program 1 times [2020-10-16 05:11:10,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:10,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346384801] [2020-10-16 05:11:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:10,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346384801] [2020-10-16 05:11:10,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:10,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:11:10,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482084653] [2020-10-16 05:11:10,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:11:10,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:10,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:11:10,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:11:10,335 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2020-10-16 05:11:10,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 114 flow. Second operand 3 states. [2020-10-16 05:11:10,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:10,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2020-10-16 05:11:10,336 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:10,365 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2020-10-16 05:11:10,365 INFO L130 PetriNetUnfolder]: For 98/104 co-relation queries the response was YES. [2020-10-16 05:11:10,365 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 29 events. 2/29 cut-off events. For 98/104 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 67 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 102. Up to 14 conditions per place. [2020-10-16 05:11:10,366 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 2 selfloop transitions, 2 changer transitions 5/19 dead transitions. [2020-10-16 05:11:10,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 19 transitions, 126 flow [2020-10-16 05:11:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:11:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:11:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2020-10-16 05:11:10,369 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8043478260869565 [2020-10-16 05:11:10,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2020-10-16 05:11:10,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2020-10-16 05:11:10,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:10,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2020-10-16 05:11:10,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:11:10,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:11:10,371 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:11:10,371 INFO L185 Difference]: Start difference. First operand has 36 places, 19 transitions, 114 flow. Second operand 3 states and 222 transitions. [2020-10-16 05:11:10,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 19 transitions, 126 flow [2020-10-16 05:11:10,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 101 flow, removed 6 selfloop flow, removed 6 redundant places. [2020-10-16 05:11:10,375 INFO L241 Difference]: Finished difference. Result has 32 places, 14 transitions, 70 flow [2020-10-16 05:11:10,375 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=3, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=14} [2020-10-16 05:11:10,375 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 13 predicate places. [2020-10-16 05:11:10,375 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 14 transitions, 70 flow [2020-10-16 05:11:10,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:11:10,376 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:10,376 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:10,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:11:10,376 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:10,377 INFO L82 PathProgramCache]: Analyzing trace with hash -2045185969, now seen corresponding path program 2 times [2020-10-16 05:11:10,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:10,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37481246] [2020-10-16 05:11:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:10,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37481246] [2020-10-16 05:11:10,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:10,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:10,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472302387] [2020-10-16 05:11:10,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:10,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:10,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:10,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:10,427 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 92 [2020-10-16 05:11:10,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 14 transitions, 70 flow. Second operand 4 states. [2020-10-16 05:11:10,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:10,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 92 [2020-10-16 05:11:10,428 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:10,444 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2020-10-16 05:11:10,444 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:11:10,445 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 13 events. 1/13 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 35. Up to 4 conditions per place. [2020-10-16 05:11:10,446 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2020-10-16 05:11:10,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 13 transitions, 66 flow [2020-10-16 05:11:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2020-10-16 05:11:10,447 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2020-10-16 05:11:10,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2020-10-16 05:11:10,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2020-10-16 05:11:10,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:10,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2020-10-16 05:11:10,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:10,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:10,450 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:10,450 INFO L185 Difference]: Start difference. First operand has 32 places, 14 transitions, 70 flow. Second operand 4 states and 280 transitions. [2020-10-16 05:11:10,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 13 transitions, 66 flow [2020-10-16 05:11:10,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 13 transitions, 54 flow, removed 1 selfloop flow, removed 5 redundant places. [2020-10-16 05:11:10,453 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2020-10-16 05:11:10,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2020-10-16 05:11:10,454 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2020-10-16 05:11:10,454 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2020-10-16 05:11:10,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:10,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:11:10,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:11:10 BasicIcfg [2020-10-16 05:11:10,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:11:10,461 INFO L168 Benchmark]: Toolchain (without parser) took 3365.23 ms. Allocated memory was 250.6 MB in the beginning and 355.5 MB in the end (delta: 104.9 MB). Free memory was 206.4 MB in the beginning and 184.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 126.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,462 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:11:10,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.59 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 206.4 MB in the beginning and 267.1 MB in the end (delta: -60.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,464 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 312.0 MB. Free memory was 267.1 MB in the beginning and 264.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,464 INFO L168 Benchmark]: Boogie Preprocessor took 30.30 ms. Allocated memory is still 312.0 MB. Free memory was 264.6 MB in the beginning and 262.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,465 INFO L168 Benchmark]: RCFGBuilder took 416.58 ms. Allocated memory is still 312.0 MB. Free memory was 262.1 MB in the beginning and 242.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,466 INFO L168 Benchmark]: TraceAbstraction took 2145.27 ms. Allocated memory was 312.0 MB in the beginning and 355.5 MB in the end (delta: 43.5 MB). Free memory was 242.8 MB in the beginning and 184.7 MB in the end (delta: 58.1 MB). Peak memory consumption was 101.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,470 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 718.59 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 206.4 MB in the beginning and 267.1 MB in the end (delta: -60.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 312.0 MB. Free memory was 267.1 MB in the beginning and 264.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.30 ms. Allocated memory is still 312.0 MB. Free memory was 264.6 MB in the beginning and 262.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 416.58 ms. Allocated memory is still 312.0 MB. Free memory was 262.1 MB in the beginning and 242.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2145.27 ms. Allocated memory was 312.0 MB in the beginning and 355.5 MB in the end (delta: 43.5 MB). Free memory was 242.8 MB in the beginning and 184.7 MB in the end (delta: 58.1 MB). Peak memory consumption was 101.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 319 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 37 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 50 PlacesBefore, 19 PlacesAfterwards, 44 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 37 TotalNumberOfCompositions, 900 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 16 SDtfs, 6 SDslu, 6 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 897 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...