/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:35:08,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:35:08,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:35:08,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:35:08,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:35:08,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:35:08,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:35:08,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:35:08,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:35:08,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:35:08,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:35:08,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:35:08,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:35:08,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:35:08,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:35:08,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:35:08,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:35:08,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:35:08,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:35:08,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:35:08,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:35:08,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:35:08,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:35:08,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:35:08,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:35:08,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:35:08,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:35:08,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:35:08,864 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-NoLbe.epf [2021-03-11 02:35:08,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:35:08,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:35:08,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:35:08,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:35:08,881 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:35:08,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:35:08,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:35:08,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:35:08,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:35:08,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:35:08,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:35:08,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:35:08,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:35:08,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:35:08,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:35:08,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:35:08,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:35:08,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:35:08,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:35:08,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:35:08,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:35:08,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:35:09,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:35:09,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:35:09,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:35:09,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:35:09,126 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:35:09,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2021-03-11 02:35:09,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fe8df162/a24ff2505e0748c0a11ae9d13ebefe1a/FLAG731e7286e [2021-03-11 02:35:09,580 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:35:09,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2021-03-11 02:35:09,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fe8df162/a24ff2505e0748c0a11ae9d13ebefe1a/FLAG731e7286e [2021-03-11 02:35:09,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fe8df162/a24ff2505e0748c0a11ae9d13ebefe1a [2021-03-11 02:35:09,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:35:09,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:35:09,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:35:09,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:35:09,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:35:09,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:35:09" (1/1) ... [2021-03-11 02:35:09,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf834f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:09, skipping insertion in model container [2021-03-11 02:35:09,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:35:09" (1/1) ... [2021-03-11 02:35:09,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:35:09,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:35:10,096 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/safe021_tso.opt.i[949,962] [2021-03-11 02:35:10,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:35:10,238 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:35:10,247 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/safe021_tso.opt.i[949,962] [2021-03-11 02:35:10,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:35:10,334 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:35:10,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10 WrapperNode [2021-03-11 02:35:10,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:35:10,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:35:10,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:35:10,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:35:10,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:35:10,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:35:10,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:35:10,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:35:10,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... [2021-03-11 02:35:10,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:35:10,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:35:10,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:35:10,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:35:10,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:35:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:35:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:35:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:35:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:35:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:35:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:35:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:35:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:35:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:35:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:35:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:35:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:35:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:35:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:35:10,469 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:35:10,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:35:10,802 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:35:10,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:35:10 BoogieIcfgContainer [2021-03-11 02:35:10,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:35:10,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:35:10,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:35:10,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:35:10,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:35:09" (1/3) ... [2021-03-11 02:35:10,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136110ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:35:10, skipping insertion in model container [2021-03-11 02:35:10,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:10" (2/3) ... [2021-03-11 02:35:10,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136110ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:35:10, skipping insertion in model container [2021-03-11 02:35:10,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:35:10" (3/3) ... [2021-03-11 02:35:10,810 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2021-03-11 02:35:10,814 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:35:10,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:35:10,817 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:35:10,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,853 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,855 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:10,867 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:35:10,879 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:35:10,893 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:35:10,893 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:35:10,893 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:35:10,893 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:35:10,893 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:35:10,893 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:35:10,893 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:35:10,893 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:35:10,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:35:10,923 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 02:35:10,924 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:10,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:35:10,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:35:10,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 02:35:10,950 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 02:35:10,950 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:10,950 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:10,951 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:35:10,951 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:10,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:10,956 INFO L82 PathProgramCache]: Analyzing trace with hash 342406277, now seen corresponding path program 1 times [2021-03-11 02:35:10,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:10,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714510056] [2021-03-11 02:35:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:11,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:11,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:11,143 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:35:11,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:35:11,157 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:11,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:11,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:11,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:11,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:11,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714510056] [2021-03-11 02:35:11,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:11,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:11,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799982402] [2021-03-11 02:35:11,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:11,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:11,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:11,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:11,233 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 75 [2021-03-11 02:35:11,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:11,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:11,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 75 [2021-03-11 02:35:11,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:11,667 INFO L129 PetriNetUnfolder]: 173/477 cut-off events. [2021-03-11 02:35:11,672 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:11,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 477 events. 173/477 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2632 event pairs, 21 based on Foata normal form. 23/486 useless extension candidates. Maximal degree in co-relation 773. Up to 117 conditions per place. [2021-03-11 02:35:11,682 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 16 selfloop transitions, 5 changer transitions 35/102 dead transitions. [2021-03-11 02:35:11,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 325 flow [2021-03-11 02:35:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:35:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:35:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 816 transitions. [2021-03-11 02:35:11,694 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8369230769230769 [2021-03-11 02:35:11,694 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 816 transitions. [2021-03-11 02:35:11,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 816 transitions. [2021-03-11 02:35:11,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:11,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 816 transitions. [2021-03-11 02:35:11,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.76923076923077) internal successors, (816), 13 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:11,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:11,718 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:11,719 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 13 states and 816 transitions. [2021-03-11 02:35:11,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 325 flow [2021-03-11 02:35:11,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 102 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:35:11,725 INFO L241 Difference]: Finished difference. Result has 90 places, 62 transitions, 196 flow [2021-03-11 02:35:11,726 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=196, PETRI_PLACES=90, PETRI_TRANSITIONS=62} [2021-03-11 02:35:11,727 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2021-03-11 02:35:11,727 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 62 transitions, 196 flow [2021-03-11 02:35:11,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:11,727 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:11,727 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:35:11,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:35:11,728 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:11,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1895058182, now seen corresponding path program 1 times [2021-03-11 02:35:11,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:11,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541653242] [2021-03-11 02:35:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:11,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:11,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:11,782 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:35:11,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:35:11,790 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:11,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:11,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:11,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:11,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:11,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:11,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541653242] [2021-03-11 02:35:11,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:11,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:11,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846105009] [2021-03-11 02:35:11,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:11,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:11,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:11,833 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:35:11,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 62 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:11,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:11,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:35:11,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:12,124 INFO L129 PetriNetUnfolder]: 241/680 cut-off events. [2021-03-11 02:35:12,124 INFO L130 PetriNetUnfolder]: For 1411/1589 co-relation queries the response was YES. [2021-03-11 02:35:12,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 680 events. 241/680 cut-off events. For 1411/1589 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4056 event pairs, 10 based on Foata normal form. 22/691 useless extension candidates. Maximal degree in co-relation 2042. Up to 159 conditions per place. [2021-03-11 02:35:12,143 INFO L132 encePairwiseOnDemand]: 62/75 looper letters, 27 selfloop transitions, 18 changer transitions 59/148 dead transitions. [2021-03-11 02:35:12,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 994 flow [2021-03-11 02:35:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 02:35:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 02:35:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1045 transitions. [2021-03-11 02:35:12,146 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8196078431372549 [2021-03-11 02:35:12,146 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1045 transitions. [2021-03-11 02:35:12,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1045 transitions. [2021-03-11 02:35:12,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:12,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1045 transitions. [2021-03-11 02:35:12,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 61.470588235294116) internal successors, (1045), 17 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 75.0) internal successors, (1350), 18 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,151 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 75.0) internal successors, (1350), 18 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,151 INFO L185 Difference]: Start difference. First operand has 90 places, 62 transitions, 196 flow. Second operand 17 states and 1045 transitions. [2021-03-11 02:35:12,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 994 flow [2021-03-11 02:35:12,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 148 transitions, 909 flow, removed 40 selfloop flow, removed 4 redundant places. [2021-03-11 02:35:12,162 INFO L241 Difference]: Finished difference. Result has 109 places, 73 transitions, 408 flow [2021-03-11 02:35:12,162 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=408, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2021-03-11 02:35:12,163 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 40 predicate places. [2021-03-11 02:35:12,163 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 408 flow [2021-03-11 02:35:12,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,163 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:12,163 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:35:12,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:35:12,164 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:12,166 INFO L82 PathProgramCache]: Analyzing trace with hash -238665818, now seen corresponding path program 1 times [2021-03-11 02:35:12,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:12,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101855051] [2021-03-11 02:35:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:12,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:12,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:12,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:12,237 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:35:12,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:35:12,247 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:12,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:12,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:12,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:12,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:12,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101855051] [2021-03-11 02:35:12,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:12,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:35:12,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315213769] [2021-03-11 02:35:12,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:35:12,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:12,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:35:12,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:35:12,280 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:35:12,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 408 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:12,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:35:12,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:12,435 INFO L129 PetriNetUnfolder]: 119/413 cut-off events. [2021-03-11 02:35:12,435 INFO L130 PetriNetUnfolder]: For 3506/3926 co-relation queries the response was YES. [2021-03-11 02:35:12,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1913 conditions, 413 events. 119/413 cut-off events. For 3506/3926 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2226 event pairs, 10 based on Foata normal form. 16/419 useless extension candidates. Maximal degree in co-relation 1850. Up to 90 conditions per place. [2021-03-11 02:35:12,440 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 17 selfloop transitions, 8 changer transitions 52/121 dead transitions. [2021-03-11 02:35:12,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 121 transitions, 1171 flow [2021-03-11 02:35:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:35:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:35:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 669 transitions. [2021-03-11 02:35:12,442 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8109090909090909 [2021-03-11 02:35:12,442 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 669 transitions. [2021-03-11 02:35:12,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 669 transitions. [2021-03-11 02:35:12,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:12,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 669 transitions. [2021-03-11 02:35:12,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 60.81818181818182) internal successors, (669), 11 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,445 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,445 INFO L185 Difference]: Start difference. First operand has 109 places, 73 transitions, 408 flow. Second operand 11 states and 669 transitions. [2021-03-11 02:35:12,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 121 transitions, 1171 flow [2021-03-11 02:35:12,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 121 transitions, 925 flow, removed 123 selfloop flow, removed 12 redundant places. [2021-03-11 02:35:12,455 INFO L241 Difference]: Finished difference. Result has 103 places, 65 transitions, 286 flow [2021-03-11 02:35:12,455 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=286, PETRI_PLACES=103, PETRI_TRANSITIONS=65} [2021-03-11 02:35:12,456 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 34 predicate places. [2021-03-11 02:35:12,456 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 65 transitions, 286 flow [2021-03-11 02:35:12,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,456 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:12,456 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:35:12,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:35:12,456 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:12,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1721846773, now seen corresponding path program 1 times [2021-03-11 02:35:12,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:12,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903130321] [2021-03-11 02:35:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:12,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:12,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:12,537 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:35:12,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:35:12,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:35:12,557 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:35:12,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:12,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:12,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903130321] [2021-03-11 02:35:12,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:12,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:35:12,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63561018] [2021-03-11 02:35:12,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:35:12,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:12,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:35:12,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:35:12,569 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:35:12,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 65 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:12,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:35:12,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:12,707 INFO L129 PetriNetUnfolder]: 306/793 cut-off events. [2021-03-11 02:35:12,707 INFO L130 PetriNetUnfolder]: For 670/705 co-relation queries the response was YES. [2021-03-11 02:35:12,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 793 events. 306/793 cut-off events. For 670/705 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5523 event pairs, 49 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 1742. Up to 216 conditions per place. [2021-03-11 02:35:12,713 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 21 selfloop transitions, 15 changer transitions 5/95 dead transitions. [2021-03-11 02:35:12,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 95 transitions, 428 flow [2021-03-11 02:35:12,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:35:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:35:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-03-11 02:35:12,715 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2021-03-11 02:35:12,715 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-03-11 02:35:12,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-03-11 02:35:12,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:12,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-03-11 02:35:12,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,719 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,719 INFO L185 Difference]: Start difference. First operand has 103 places, 65 transitions, 286 flow. Second operand 10 states and 653 transitions. [2021-03-11 02:35:12,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 95 transitions, 428 flow [2021-03-11 02:35:12,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 370 flow, removed 14 selfloop flow, removed 13 redundant places. [2021-03-11 02:35:12,724 INFO L241 Difference]: Finished difference. Result has 99 places, 78 transitions, 337 flow [2021-03-11 02:35:12,724 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=337, PETRI_PLACES=99, PETRI_TRANSITIONS=78} [2021-03-11 02:35:12,724 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 30 predicate places. [2021-03-11 02:35:12,725 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 78 transitions, 337 flow [2021-03-11 02:35:12,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,725 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:12,725 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:35:12,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:35:12,725 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:12,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:12,726 INFO L82 PathProgramCache]: Analyzing trace with hash 773445308, now seen corresponding path program 1 times [2021-03-11 02:35:12,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:12,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661207432] [2021-03-11 02:35:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:12,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:12,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:12,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:12,798 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:35:12,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:35:12,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:35:12,825 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:35:12,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:12,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:12,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:12,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661207432] [2021-03-11 02:35:12,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:12,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:12,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350380719] [2021-03-11 02:35:12,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:12,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:12,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:12,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:12,840 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:35:12,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 78 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:12,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:12,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:35:12,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:13,058 INFO L129 PetriNetUnfolder]: 284/772 cut-off events. [2021-03-11 02:35:13,058 INFO L130 PetriNetUnfolder]: For 1815/2221 co-relation queries the response was YES. [2021-03-11 02:35:13,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2667 conditions, 772 events. 284/772 cut-off events. For 1815/2221 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5573 event pairs, 4 based on Foata normal form. 73/795 useless extension candidates. Maximal degree in co-relation 2647. Up to 305 conditions per place. [2021-03-11 02:35:13,063 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 20 selfloop transitions, 28 changer transitions 11/113 dead transitions. [2021-03-11 02:35:13,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 679 flow [2021-03-11 02:35:13,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:35:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:35:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 848 transitions. [2021-03-11 02:35:13,066 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8697435897435898 [2021-03-11 02:35:13,067 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 848 transitions. [2021-03-11 02:35:13,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 848 transitions. [2021-03-11 02:35:13,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:13,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 848 transitions. [2021-03-11 02:35:13,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.23076923076923) internal successors, (848), 13 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,071 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,072 INFO L185 Difference]: Start difference. First operand has 99 places, 78 transitions, 337 flow. Second operand 13 states and 848 transitions. [2021-03-11 02:35:13,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 679 flow [2021-03-11 02:35:13,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 671 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-11 02:35:13,077 INFO L241 Difference]: Finished difference. Result has 115 places, 95 transitions, 555 flow [2021-03-11 02:35:13,077 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=555, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2021-03-11 02:35:13,077 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 46 predicate places. [2021-03-11 02:35:13,077 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 555 flow [2021-03-11 02:35:13,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,078 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:13,078 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:35:13,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:35:13,078 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:13,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1058262937, now seen corresponding path program 1 times [2021-03-11 02:35:13,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:13,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292747714] [2021-03-11 02:35:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:13,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:13,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:13,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:13,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:13,168 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:35:13,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:35:13,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:35:13,188 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:35:13,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:13,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:13,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292747714] [2021-03-11 02:35:13,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:13,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:35:13,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557350530] [2021-03-11 02:35:13,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:35:13,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:13,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:35:13,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:35:13,201 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:35:13,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 555 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:13,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:35:13,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:13,451 INFO L129 PetriNetUnfolder]: 203/631 cut-off events. [2021-03-11 02:35:13,451 INFO L130 PetriNetUnfolder]: For 3393/4377 co-relation queries the response was YES. [2021-03-11 02:35:13,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 631 events. 203/631 cut-off events. For 3393/4377 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4686 event pairs, 0 based on Foata normal form. 94/680 useless extension candidates. Maximal degree in co-relation 2822. Up to 224 conditions per place. [2021-03-11 02:35:13,456 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 16 selfloop transitions, 32 changer transitions 19/121 dead transitions. [2021-03-11 02:35:13,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 121 transitions, 871 flow [2021-03-11 02:35:13,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 02:35:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-11 02:35:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1028 transitions. [2021-03-11 02:35:13,459 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8566666666666667 [2021-03-11 02:35:13,459 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1028 transitions. [2021-03-11 02:35:13,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1028 transitions. [2021-03-11 02:35:13,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:13,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1028 transitions. [2021-03-11 02:35:13,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 64.25) internal successors, (1028), 16 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 75.0) internal successors, (1275), 17 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,463 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 75.0) internal successors, (1275), 17 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,463 INFO L185 Difference]: Start difference. First operand has 115 places, 95 transitions, 555 flow. Second operand 16 states and 1028 transitions. [2021-03-11 02:35:13,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 121 transitions, 871 flow [2021-03-11 02:35:13,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 778 flow, removed 36 selfloop flow, removed 9 redundant places. [2021-03-11 02:35:13,475 INFO L241 Difference]: Finished difference. Result has 128 places, 96 transitions, 576 flow [2021-03-11 02:35:13,475 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=576, PETRI_PLACES=128, PETRI_TRANSITIONS=96} [2021-03-11 02:35:13,475 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 59 predicate places. [2021-03-11 02:35:13,475 INFO L480 AbstractCegarLoop]: Abstraction has has 128 places, 96 transitions, 576 flow [2021-03-11 02:35:13,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,475 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:13,475 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:35:13,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:35:13,476 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:13,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:13,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1979543153, now seen corresponding path program 1 times [2021-03-11 02:35:13,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:13,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714018394] [2021-03-11 02:35:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:13,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:13,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:13,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:13,527 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:13,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:13,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:13,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:13,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:13,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:13,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714018394] [2021-03-11 02:35:13,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:13,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:13,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206006331] [2021-03-11 02:35:13,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:13,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:13,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:13,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:13,556 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:35:13,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 96 transitions, 576 flow. Second operand has 7 states, 7 states have (on average 62.42857142857143) internal successors, (437), 7 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:13,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:35:13,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:13,661 INFO L129 PetriNetUnfolder]: 134/650 cut-off events. [2021-03-11 02:35:13,661 INFO L130 PetriNetUnfolder]: For 2042/2145 co-relation queries the response was YES. [2021-03-11 02:35:13,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 650 events. 134/650 cut-off events. For 2042/2145 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5527 event pairs, 0 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 2219. Up to 101 conditions per place. [2021-03-11 02:35:13,665 INFO L132 encePairwiseOnDemand]: 69/75 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2021-03-11 02:35:13,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 95 transitions, 598 flow [2021-03-11 02:35:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:35:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:35:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 438 transitions. [2021-03-11 02:35:13,666 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8342857142857143 [2021-03-11 02:35:13,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 438 transitions. [2021-03-11 02:35:13,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 438 transitions. [2021-03-11 02:35:13,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:13,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 438 transitions. [2021-03-11 02:35:13,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,668 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,668 INFO L185 Difference]: Start difference. First operand has 128 places, 96 transitions, 576 flow. Second operand 7 states and 438 transitions. [2021-03-11 02:35:13,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 95 transitions, 598 flow [2021-03-11 02:35:13,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 95 transitions, 501 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-03-11 02:35:13,681 INFO L241 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2021-03-11 02:35:13,681 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2021-03-11 02:35:13,681 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 45 predicate places. [2021-03-11 02:35:13,681 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2021-03-11 02:35:13,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.42857142857143) internal successors, (437), 7 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:13,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:35:13,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:35:13 BasicIcfg [2021-03-11 02:35:13,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:35:13,689 INFO L168 Benchmark]: Toolchain (without parser) took 3744.59 ms. Allocated memory was 255.9 MB in the beginning and 419.4 MB in the end (delta: 163.6 MB). Free memory was 235.1 MB in the beginning and 216.5 MB in the end (delta: 18.6 MB). Peak memory consumption was 181.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:13,689 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:35:13,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.88 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 234.3 MB in the beginning and 311.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:13,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 348.1 MB. Free memory was 311.1 MB in the beginning and 309.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:13,692 INFO L168 Benchmark]: Boogie Preprocessor took 28.86 ms. Allocated memory is still 348.1 MB. Free memory was 309.5 MB in the beginning and 307.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:13,693 INFO L168 Benchmark]: RCFGBuilder took 391.71 ms. Allocated memory is still 348.1 MB. Free memory was 307.9 MB in the beginning and 285.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:13,693 INFO L168 Benchmark]: TraceAbstraction took 2879.15 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 285.3 MB in the beginning and 216.5 MB in the end (delta: 68.8 MB). Peak memory consumption was 143.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:13,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 393.88 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 234.3 MB in the beginning and 311.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 348.1 MB. Free memory was 311.1 MB in the beginning and 309.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.86 ms. Allocated memory is still 348.1 MB. Free memory was 309.5 MB in the beginning and 307.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 391.71 ms. Allocated memory is still 348.1 MB. Free memory was 307.9 MB in the beginning and 285.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2879.15 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 285.3 MB in the beginning and 216.5 MB in the end (delta: 68.8 MB). Peak memory consumption was 143.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 21.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2792.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1807.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 95 SDtfs, 307 SDslu, 334 SDs, 0 SdLazy, 335 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 239.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 960.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=576occurred in iteration=6, InterpolantAutomatonStates: 87, 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: 24.4ms SsaConstructionTime, 155.7ms SatisfiabilityAnalysisTime, 620.8ms InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 1235 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...