/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:06:58,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:06:58,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:06:58,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:06:58,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:06:58,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:06:58,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:06:58,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:06:58,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:06:58,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:06:58,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:06:58,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:06:58,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:06:58,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:06:58,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:06:58,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:06:58,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:06:58,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:06:58,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:06:58,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:06:58,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:06:58,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:06:58,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:06:58,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:06:58,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 11:06:58,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 11:06:58,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 11:06:58,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 11:06:58,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 11:06:58,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 11:06:58,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:06:58,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:06:58,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:06:58,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:06:58,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:06:58,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:06:58,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:06:58,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:06:58,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:06:58,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:06:58,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:06:58,894 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-VariableLbe.epf [2021-03-24 11:06:58,927 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:06:58,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:06:58,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:06:58,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:06:58,930 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:06:58,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:06:58,931 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:06:58,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:06:58,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:06:58,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:06:58,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:06:58,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:06:58,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:06:58,932 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:06:58,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:06:58,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:06:58,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:06:58,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:06:58,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:06:58,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:06:58,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:06:58,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:06:58,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:06:58,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:06:58,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:06:58,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:06:58,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:06:58,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:06:58,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:06:58,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:06:59,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:06:59,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:06:59,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:06:59,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:06:59,229 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:06:59,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.opt.i [2021-03-24 11:06:59,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea7e7f48/242512c7df6d4ed98c4c854d46cade04/FLAG77f54400d [2021-03-24 11:06:59,811 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:06:59,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.opt.i [2021-03-24 11:06:59,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea7e7f48/242512c7df6d4ed98c4c854d46cade04/FLAG77f54400d [2021-03-24 11:07:00,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea7e7f48/242512c7df6d4ed98c4c854d46cade04 [2021-03-24 11:07:00,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:07:00,281 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:07:00,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:07:00,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:07:00,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:07:00,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd19f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00, skipping insertion in model container [2021-03-24 11:07:00,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:07:00,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:07:00,465 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.opt.i[949,962] [2021-03-24 11:07:00,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:07:00,688 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:07:00,697 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.opt.i[949,962] [2021-03-24 11:07:00,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:07:00,799 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:07:00,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00 WrapperNode [2021-03-24 11:07:00,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:07:00,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:07:00,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:07:00,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:07:00,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:07:00,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:07:00,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:07:00,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:07:00,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:07:00,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:07:00,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:07:00,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:07:00,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:07:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:07:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:07:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:07:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:07:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:07:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:07:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:07:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:07:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:07:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:07:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:07:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:07:00,968 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:07:02,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:07:02,619 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 11:07:02,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:07:02 BoogieIcfgContainer [2021-03-24 11:07:02,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:07:02,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:07:02,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:07:02,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:07:02,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:07:00" (1/3) ... [2021-03-24 11:07:02,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d80045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:07:02, skipping insertion in model container [2021-03-24 11:07:02,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (2/3) ... [2021-03-24 11:07:02,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d80045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:07:02, skipping insertion in model container [2021-03-24 11:07:02,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:07:02" (3/3) ... [2021-03-24 11:07:02,627 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_pso.opt.i [2021-03-24 11:07:02,632 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:07:02,636 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 11:07:02,637 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:07:02,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,671 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:02,677 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:07:02,693 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 11:07:02,710 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:07:02,711 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:07:02,711 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:07:02,711 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:07:02,711 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:07:02,711 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:07:02,711 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:07:02,711 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:07:02,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 168 flow [2021-03-24 11:07:02,749 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-24 11:07:02,749 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:02,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-24 11:07:02,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 168 flow [2021-03-24 11:07:02,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 160 flow [2021-03-24 11:07:02,757 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:07:02,765 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-24 11:07:02,768 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-24 11:07:02,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 77 transitions, 160 flow [2021-03-24 11:07:02,782 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-24 11:07:02,783 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:02,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-24 11:07:02,785 INFO L142 LiptonReduction]: Number of co-enabled transitions 918 [2021-03-24 11:07:04,080 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 224 DAG size of output: 183 [2021-03-24 11:07:04,389 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-03-24 11:07:05,722 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 308 DAG size of output: 264 [2021-03-24 11:07:06,312 WARN L205 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2021-03-24 11:07:06,850 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 11:07:07,241 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2021-03-24 11:07:07,369 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-24 11:07:08,088 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-03-24 11:07:08,377 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-03-24 11:07:09,005 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-24 11:07:09,617 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-24 11:07:09,894 INFO L154 LiptonReduction]: Checked pairs total: 1657 [2021-03-24 11:07:09,894 INFO L156 LiptonReduction]: Total number of compositions: 53 [2021-03-24 11:07:09,896 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7140 [2021-03-24 11:07:09,908 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-24 11:07:09,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:09,908 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,909 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1463710772, now seen corresponding path program 1 times [2021-03-24 11:07:09,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254646372] [2021-03-24 11:07:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:10,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254646372] [2021-03-24 11:07:10,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:07:10,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575028105] [2021-03-24 11:07:10,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:07:10,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:07:10,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:07:10,203 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 132 [2021-03-24 11:07:10,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 132 [2021-03-24 11:07:10,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,295 INFO L129 PetriNetUnfolder]: 23/91 cut-off events. [2021-03-24 11:07:10,296 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:10,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 91 events. 23/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 332 event pairs, 9 based on Foata normal form. 6/90 useless extension candidates. Maximal degree in co-relation 130. Up to 37 conditions per place. [2021-03-24 11:07:10,299 INFO L132 encePairwiseOnDemand]: 128/132 looper letters, 7 selfloop transitions, 2 changer transitions 5/32 dead transitions. [2021-03-24 11:07:10,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 92 flow [2021-03-24 11:07:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:07:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:07:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-03-24 11:07:10,317 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2021-03-24 11:07:10,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-03-24 11:07:10,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-03-24 11:07:10,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-03-24 11:07:10,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,335 INFO L185 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 347 transitions. [2021-03-24 11:07:10,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 92 flow [2021-03-24 11:07:10,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:10,340 INFO L241 Difference]: Finished difference. Result has 35 places, 24 transitions, 56 flow [2021-03-24 11:07:10,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2021-03-24 11:07:10,343 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2021-03-24 11:07:10,345 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 56 flow [2021-03-24 11:07:10,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,346 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:10,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:07:10,346 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1396965882, now seen corresponding path program 1 times [2021-03-24 11:07:10,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349147662] [2021-03-24 11:07:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:10,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349147662] [2021-03-24 11:07:10,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:10,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658165027] [2021-03-24 11:07:10,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:10,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:10,532 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 132 [2021-03-24 11:07:10,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 132 [2021-03-24 11:07:10,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,560 INFO L129 PetriNetUnfolder]: 6/51 cut-off events. [2021-03-24 11:07:10,560 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:10,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 2 based on Foata normal form. 4/53 useless extension candidates. Maximal degree in co-relation 64. Up to 15 conditions per place. [2021-03-24 11:07:10,561 INFO L132 encePairwiseOnDemand]: 127/132 looper letters, 4 selfloop transitions, 3 changer transitions 5/31 dead transitions. [2021-03-24 11:07:10,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 94 flow [2021-03-24 11:07:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2021-03-24 11:07:10,563 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8696969696969697 [2021-03-24 11:07:10,564 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2021-03-24 11:07:10,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2021-03-24 11:07:10,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2021-03-24 11:07:10,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,569 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,569 INFO L185 Difference]: Start difference. First operand has 35 places, 24 transitions, 56 flow. Second operand 5 states and 574 transitions. [2021-03-24 11:07:10,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 94 flow [2021-03-24 11:07:10,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:10,570 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 79 flow [2021-03-24 11:07:10,570 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-24 11:07:10,571 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2021-03-24 11:07:10,571 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 79 flow [2021-03-24 11:07:10,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,571 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,571 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:10,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:07:10,572 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,572 INFO L82 PathProgramCache]: Analyzing trace with hash 771441664, now seen corresponding path program 1 times [2021-03-24 11:07:10,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892536286] [2021-03-24 11:07:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:10,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:10,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:10,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:10,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:10,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892536286] [2021-03-24 11:07:10,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 11:07:10,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881299871] [2021-03-24 11:07:10,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 11:07:10,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 11:07:10,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-24 11:07:10,722 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 132 [2021-03-24 11:07:10,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 79 flow. Second operand has 8 states, 8 states have (on average 96.875) internal successors, (775), 8 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 132 [2021-03-24 11:07:10,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,840 INFO L129 PetriNetUnfolder]: 63/157 cut-off events. [2021-03-24 11:07:10,841 INFO L130 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2021-03-24 11:07:10,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 157 events. 63/157 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 605 event pairs, 33 based on Foata normal form. 11/161 useless extension candidates. Maximal degree in co-relation 341. Up to 91 conditions per place. [2021-03-24 11:07:10,842 INFO L132 encePairwiseOnDemand]: 122/132 looper letters, 8 selfloop transitions, 10 changer transitions 9/42 dead transitions. [2021-03-24 11:07:10,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 169 flow [2021-03-24 11:07:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:07:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:07:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 894 transitions. [2021-03-24 11:07:10,845 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-03-24 11:07:10,845 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 894 transitions. [2021-03-24 11:07:10,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 894 transitions. [2021-03-24 11:07:10,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 894 transitions. [2021-03-24 11:07:10,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.33333333333333) internal successors, (894), 9 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,852 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,852 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 79 flow. Second operand 9 states and 894 transitions. [2021-03-24 11:07:10,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 169 flow [2021-03-24 11:07:10,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:10,854 INFO L241 Difference]: Finished difference. Result has 45 places, 32 transitions, 140 flow [2021-03-24 11:07:10,854 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2021-03-24 11:07:10,855 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2021-03-24 11:07:10,855 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 140 flow [2021-03-24 11:07:10,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 96.875) internal successors, (775), 8 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,855 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,855 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:10,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:07:10,856 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1856470628, now seen corresponding path program 1 times [2021-03-24 11:07:10,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750336539] [2021-03-24 11:07:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:10,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:11,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:11,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:11,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:11,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750336539] [2021-03-24 11:07:11,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:11,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:11,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064105721] [2021-03-24 11:07:11,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:07:11,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:11,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:07:11,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:07:11,041 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 132 [2021-03-24 11:07:11,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:11,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 132 [2021-03-24 11:07:11,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:11,221 INFO L129 PetriNetUnfolder]: 58/153 cut-off events. [2021-03-24 11:07:11,221 INFO L130 PetriNetUnfolder]: For 303/306 co-relation queries the response was YES. [2021-03-24 11:07:11,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 153 events. 58/153 cut-off events. For 303/306 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 613 event pairs, 12 based on Foata normal form. 12/159 useless extension candidates. Maximal degree in co-relation 473. Up to 65 conditions per place. [2021-03-24 11:07:11,226 INFO L132 encePairwiseOnDemand]: 124/132 looper letters, 15 selfloop transitions, 11 changer transitions 9/51 dead transitions. [2021-03-24 11:07:11,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 312 flow [2021-03-24 11:07:11,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 11:07:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 11:07:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1004 transitions. [2021-03-24 11:07:11,232 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7606060606060606 [2021-03-24 11:07:11,232 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1004 transitions. [2021-03-24 11:07:11,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1004 transitions. [2021-03-24 11:07:11,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:11,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1004 transitions. [2021-03-24 11:07:11,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 100.4) internal successors, (1004), 10 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,239 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,239 INFO L185 Difference]: Start difference. First operand has 45 places, 32 transitions, 140 flow. Second operand 10 states and 1004 transitions. [2021-03-24 11:07:11,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 312 flow [2021-03-24 11:07:11,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 302 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:11,243 INFO L241 Difference]: Finished difference. Result has 54 places, 36 transitions, 198 flow [2021-03-24 11:07:11,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2021-03-24 11:07:11,243 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2021-03-24 11:07:11,243 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 198 flow [2021-03-24 11:07:11,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:11,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:11,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:07:11,244 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:11,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1758450362, now seen corresponding path program 1 times [2021-03-24 11:07:11,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:11,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417249951] [2021-03-24 11:07:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:11,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:11,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:11,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:11,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:11,370 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-03-24 11:07:11,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 11:07:11,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:11,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:11,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417249951] [2021-03-24 11:07:11,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:11,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 11:07:11,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720365663] [2021-03-24 11:07:11,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 11:07:11,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:11,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 11:07:11,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-24 11:07:11,404 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 132 [2021-03-24 11:07:11,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:11,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 132 [2021-03-24 11:07:11,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:11,510 INFO L129 PetriNetUnfolder]: 42/128 cut-off events. [2021-03-24 11:07:11,510 INFO L130 PetriNetUnfolder]: For 649/652 co-relation queries the response was YES. [2021-03-24 11:07:11,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 128 events. 42/128 cut-off events. For 649/652 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 485 event pairs, 8 based on Foata normal form. 13/137 useless extension candidates. Maximal degree in co-relation 494. Up to 64 conditions per place. [2021-03-24 11:07:11,512 INFO L132 encePairwiseOnDemand]: 123/132 looper letters, 13 selfloop transitions, 10 changer transitions 9/47 dead transitions. [2021-03-24 11:07:11,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 47 transitions, 347 flow [2021-03-24 11:07:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:07:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:07:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 871 transitions. [2021-03-24 11:07:11,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7331649831649831 [2021-03-24 11:07:11,515 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 871 transitions. [2021-03-24 11:07:11,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 871 transitions. [2021-03-24 11:07:11,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:11,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 871 transitions. [2021-03-24 11:07:11,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,519 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,520 INFO L185 Difference]: Start difference. First operand has 54 places, 36 transitions, 198 flow. Second operand 9 states and 871 transitions. [2021-03-24 11:07:11,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 47 transitions, 347 flow [2021-03-24 11:07:11,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 326 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 11:07:11,524 INFO L241 Difference]: Finished difference. Result has 56 places, 37 transitions, 230 flow [2021-03-24 11:07:11,524 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2021-03-24 11:07:11,524 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2021-03-24 11:07:11,524 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 37 transitions, 230 flow [2021-03-24 11:07:11,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,525 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:11,525 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:11,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:07:11,525 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:11,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1674934335, now seen corresponding path program 1 times [2021-03-24 11:07:11,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:11,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140126112] [2021-03-24 11:07:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:11,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:11,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:11,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:11,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 11:07:11,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:11,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:11,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140126112] [2021-03-24 11:07:11,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:11,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:07:11,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318005342] [2021-03-24 11:07:11,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:07:11,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:11,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:07:11,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:07:11,682 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 132 [2021-03-24 11:07:11,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 37 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 99.16666666666667) internal successors, (595), 6 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:11,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 132 [2021-03-24 11:07:11,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:11,779 INFO L129 PetriNetUnfolder]: 29/107 cut-off events. [2021-03-24 11:07:11,780 INFO L130 PetriNetUnfolder]: For 384/387 co-relation queries the response was YES. [2021-03-24 11:07:11,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 107 events. 29/107 cut-off events. For 384/387 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 387 event pairs, 3 based on Foata normal form. 6/110 useless extension candidates. Maximal degree in co-relation 405. Up to 35 conditions per place. [2021-03-24 11:07:11,783 INFO L132 encePairwiseOnDemand]: 127/132 looper letters, 15 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2021-03-24 11:07:11,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 42 transitions, 330 flow [2021-03-24 11:07:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 11:07:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 11:07:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 607 transitions. [2021-03-24 11:07:11,786 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7664141414141414 [2021-03-24 11:07:11,787 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 607 transitions. [2021-03-24 11:07:11,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 607 transitions. [2021-03-24 11:07:11,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:11,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 607 transitions. [2021-03-24 11:07:11,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,790 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,790 INFO L185 Difference]: Start difference. First operand has 56 places, 37 transitions, 230 flow. Second operand 6 states and 607 transitions. [2021-03-24 11:07:11,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 42 transitions, 330 flow [2021-03-24 11:07:11,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 291 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-24 11:07:11,794 INFO L241 Difference]: Finished difference. Result has 56 places, 37 transitions, 225 flow [2021-03-24 11:07:11,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2021-03-24 11:07:11,795 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2021-03-24 11:07:11,795 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 37 transitions, 225 flow [2021-03-24 11:07:11,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 99.16666666666667) internal successors, (595), 6 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:11,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:11,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:07:11,795 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:11,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:11,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1303021169, now seen corresponding path program 1 times [2021-03-24 11:07:11,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:11,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263900880] [2021-03-24 11:07:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:11,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:11,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:11,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:11,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263900880] [2021-03-24 11:07:11,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:11,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:11,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944274182] [2021-03-24 11:07:11,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:11,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:11,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:11,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:11,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 132 [2021-03-24 11:07:11,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 37 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:11,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 132 [2021-03-24 11:07:11,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:11,919 INFO L129 PetriNetUnfolder]: 19/114 cut-off events. [2021-03-24 11:07:11,919 INFO L130 PetriNetUnfolder]: For 630/644 co-relation queries the response was YES. [2021-03-24 11:07:11,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 114 events. 19/114 cut-off events. For 630/644 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 531 event pairs, 6 based on Foata normal form. 11/121 useless extension candidates. Maximal degree in co-relation 399. Up to 38 conditions per place. [2021-03-24 11:07:11,921 INFO L132 encePairwiseOnDemand]: 128/132 looper letters, 3 selfloop transitions, 2 changer transitions 8/39 dead transitions. [2021-03-24 11:07:11,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 39 transitions, 265 flow [2021-03-24 11:07:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2021-03-24 11:07:11,923 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2021-03-24 11:07:11,923 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2021-03-24 11:07:11,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2021-03-24 11:07:11,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:11,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2021-03-24 11:07:11,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,927 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,928 INFO L185 Difference]: Start difference. First operand has 56 places, 37 transitions, 225 flow. Second operand 5 states and 570 transitions. [2021-03-24 11:07:11,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 39 transitions, 265 flow [2021-03-24 11:07:11,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 39 transitions, 232 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-24 11:07:11,931 INFO L241 Difference]: Finished difference. Result has 54 places, 31 transitions, 178 flow [2021-03-24 11:07:11,932 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=54, PETRI_TRANSITIONS=31} [2021-03-24 11:07:11,932 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2021-03-24 11:07:11,932 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 31 transitions, 178 flow [2021-03-24 11:07:11,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:11,933 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:11,934 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:11,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:07:11,934 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:11,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:11,934 INFO L82 PathProgramCache]: Analyzing trace with hash 757402891, now seen corresponding path program 1 times [2021-03-24 11:07:11,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:11,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935295097] [2021-03-24 11:07:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:12,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:12,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:12,015 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:12,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:12,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:12,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:12,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935295097] [2021-03-24 11:07:12,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:12,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:07:12,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128272176] [2021-03-24 11:07:12,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:12,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:12,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:12,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:12,025 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 132 [2021-03-24 11:07:12,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 31 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:12,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 132 [2021-03-24 11:07:12,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:12,065 INFO L129 PetriNetUnfolder]: 24/95 cut-off events. [2021-03-24 11:07:12,065 INFO L130 PetriNetUnfolder]: For 147/158 co-relation queries the response was YES. [2021-03-24 11:07:12,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 95 events. 24/95 cut-off events. For 147/158 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 344 event pairs, 6 based on Foata normal form. 18/97 useless extension candidates. Maximal degree in co-relation 249. Up to 50 conditions per place. [2021-03-24 11:07:12,066 INFO L132 encePairwiseOnDemand]: 127/132 looper letters, 6 selfloop transitions, 5 changer transitions 3/36 dead transitions. [2021-03-24 11:07:12,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 36 transitions, 200 flow [2021-03-24 11:07:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:12,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-03-24 11:07:12,068 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8348484848484848 [2021-03-24 11:07:12,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-03-24 11:07:12,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-03-24 11:07:12,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:12,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-03-24 11:07:12,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,072 INFO L185 Difference]: Start difference. First operand has 54 places, 31 transitions, 178 flow. Second operand 5 states and 551 transitions. [2021-03-24 11:07:12,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 36 transitions, 200 flow [2021-03-24 11:07:12,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 173 flow, removed 5 selfloop flow, removed 10 redundant places. [2021-03-24 11:07:12,076 INFO L241 Difference]: Finished difference. Result has 48 places, 32 transitions, 166 flow [2021-03-24 11:07:12,076 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2021-03-24 11:07:12,076 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2021-03-24 11:07:12,076 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 166 flow [2021-03-24 11:07:12,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,077 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:12,077 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:12,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:07:12,077 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:12,077 INFO L82 PathProgramCache]: Analyzing trace with hash 358831505, now seen corresponding path program 1 times [2021-03-24 11:07:12,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:12,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926432730] [2021-03-24 11:07:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:12,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:12,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:12,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:12,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:12,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:12,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:12,130 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:12,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:12,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:12,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:12,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926432730] [2021-03-24 11:07:12,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:12,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:07:12,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283130046] [2021-03-24 11:07:12,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:12,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:12,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:12,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:12,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 132 [2021-03-24 11:07:12,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:12,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 132 [2021-03-24 11:07:12,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:12,183 INFO L129 PetriNetUnfolder]: 14/69 cut-off events. [2021-03-24 11:07:12,183 INFO L130 PetriNetUnfolder]: For 106/171 co-relation queries the response was YES. [2021-03-24 11:07:12,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 69 events. 14/69 cut-off events. For 106/171 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 192 event pairs, 0 based on Foata normal form. 34/96 useless extension candidates. Maximal degree in co-relation 206. Up to 27 conditions per place. [2021-03-24 11:07:12,183 INFO L132 encePairwiseOnDemand]: 127/132 looper letters, 4 selfloop transitions, 8 changer transitions 5/37 dead transitions. [2021-03-24 11:07:12,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 37 transitions, 214 flow [2021-03-24 11:07:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 766 transitions. [2021-03-24 11:07:12,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.829004329004329 [2021-03-24 11:07:12,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 766 transitions. [2021-03-24 11:07:12,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 766 transitions. [2021-03-24 11:07:12,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:12,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 766 transitions. [2021-03-24 11:07:12,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.42857142857143) internal successors, (766), 7 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,190 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,190 INFO L185 Difference]: Start difference. First operand has 48 places, 32 transitions, 166 flow. Second operand 7 states and 766 transitions. [2021-03-24 11:07:12,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 37 transitions, 214 flow [2021-03-24 11:07:12,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 37 transitions, 196 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:12,192 INFO L241 Difference]: Finished difference. Result has 54 places, 31 transitions, 164 flow [2021-03-24 11:07:12,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=54, PETRI_TRANSITIONS=31} [2021-03-24 11:07:12,193 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2021-03-24 11:07:12,193 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 31 transitions, 164 flow [2021-03-24 11:07:12,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:12,193 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:12,193 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:12,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:07:12,193 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:12,194 INFO L82 PathProgramCache]: Analyzing trace with hash -395755107, now seen corresponding path program 1 times [2021-03-24 11:07:12,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:12,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588878390] [2021-03-24 11:07:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 11:07:12,240 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 11:07:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 11:07:12,292 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 11:07:12,333 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 11:07:12,333 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 11:07:12,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 11:07:12,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:07:12 BasicIcfg [2021-03-24 11:07:12,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:07:12,414 INFO L168 Benchmark]: Toolchain (without parser) took 12131.25 ms. Allocated memory was 333.4 MB in the beginning and 482.3 MB in the end (delta: 148.9 MB). Free memory was 296.9 MB in the beginning and 192.6 MB in the end (delta: 104.3 MB). Peak memory consumption was 256.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:12,414 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 333.4 MB. Free memory is still 315.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:07:12,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.72 ms. Allocated memory is still 333.4 MB. Free memory was 296.8 MB in the beginning and 294.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:12,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.61 ms. Allocated memory is still 333.4 MB. Free memory was 294.0 MB in the beginning and 290.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:12,417 INFO L168 Benchmark]: Boogie Preprocessor took 47.34 ms. Allocated memory is still 333.4 MB. Free memory was 290.9 MB in the beginning and 288.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:12,420 INFO L168 Benchmark]: RCFGBuilder took 1707.65 ms. Allocated memory is still 333.4 MB. Free memory was 288.8 MB in the beginning and 262.3 MB in the end (delta: 26.5 MB). Peak memory consumption was 156.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:12,420 INFO L168 Benchmark]: TraceAbstraction took 9790.20 ms. Allocated memory was 333.4 MB in the beginning and 482.3 MB in the end (delta: 148.9 MB). Free memory was 261.2 MB in the beginning and 192.6 MB in the end (delta: 68.6 MB). Peak memory consumption was 217.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:12,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 333.4 MB. Free memory is still 315.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 511.72 ms. Allocated memory is still 333.4 MB. Free memory was 296.8 MB in the beginning and 294.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 62.61 ms. Allocated memory is still 333.4 MB. Free memory was 294.0 MB in the beginning and 290.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 47.34 ms. Allocated memory is still 333.4 MB. Free memory was 290.9 MB in the beginning and 288.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1707.65 ms. Allocated memory is still 333.4 MB. Free memory was 288.8 MB in the beginning and 262.3 MB in the end (delta: 26.5 MB). Peak memory consumption was 156.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9790.20 ms. Allocated memory was 333.4 MB in the beginning and 482.3 MB in the end (delta: 148.9 MB). Free memory was 261.2 MB in the beginning and 192.6 MB in the end (delta: 68.6 MB). Peak memory consumption was 217.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7126.5ms, 82 PlacesBefore, 37 PlacesAfterwards, 77 TransitionsBefore, 31 TransitionsAfterwards, 918 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 53 TotalNumberOfCompositions, 1657 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 799, positive: 733, positive conditional: 0, positive unconditional: 733, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 449, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 449, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 799, positive: 305, positive conditional: 0, positive unconditional: 305, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 449, unknown conditional: 0, unknown unconditional: 449] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; [L713] 0 _Bool x$flush_delayed; [L714] 0 int x$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0] [L715] 0 _Bool x$r_buff0_thd0; [L716] 0 _Bool x$r_buff0_thd1; [L717] 0 _Bool x$r_buff0_thd2; [L718] 0 _Bool x$r_buff1_thd0; [L719] 0 _Bool x$r_buff1_thd1; [L720] 0 _Bool x$r_buff1_thd2; [L721] 0 _Bool x$read_delayed; [L722] 0 int *x$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}] [L723] 0 int x$w_buff0; [L724] 0 _Bool x$w_buff0_used; [L725] 0 int x$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0] [L726] 0 _Bool x$w_buff1_used; [L728] 0 int y = 0; [L729] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2479; [L791] FCALL, FORK 0 pthread_create(&t2479, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L792] 0 pthread_t t2480; [L793] FCALL, FORK 0 pthread_create(&t2480, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L754] 2 x$w_buff1 = x$w_buff0 [L755] 2 x$w_buff0 = 2 [L756] 2 x$w_buff1_used = x$w_buff0_used [L757] 2 x$w_buff0_used = (_Bool)1 [L18] COND FALSE 2 !(!expression) [L759] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L760] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L761] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L762] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L734] 1 y = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L737] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L741] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L741] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L742] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L742] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L743] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L743] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L744] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L768] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L768] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L769] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L769] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L770] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L770] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L771] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L771] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L772] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L772] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 1 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L800] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L800] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L801] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L801] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L802] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L802] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L803] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L803] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 x$flush_delayed = weak$$choice2 [L809] 0 x$mem_tmp = x [L810] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L810] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L811] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L811] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0) [L811] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L811] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L812] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L812] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1) [L812] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L812] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L813] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L813] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used) [L813] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L813] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L814] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L815] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0) [L815] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L815] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L816] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L818] 0 x = x$flush_delayed ? x$mem_tmp : x [L819] 0 x$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 9626.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 920.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7192.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 51 SDslu, 54 SDs, 0 SdLazy, 217 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 275.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 300.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, InterpolantAutomatonStates: 59, 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: 31.0ms SsaConstructionTime, 445.2ms SatisfiabilityAnalysisTime, 740.9ms InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...