/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/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:32:40,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:32:40,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:32:40,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:32:40,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:32:40,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:32:40,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:32:40,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:32:40,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:32:40,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:32:40,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:32:40,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:32:40,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:32:40,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:32:40,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:32:40,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:32:40,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:32:40,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:32:40,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:32:40,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:32:40,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:32:40,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:32:40,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:32:40,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:32:40,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:32:40,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:32:40,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:32:40,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:32:40,988 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 02:32:41,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:32:41,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:32:41,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:32:41,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:32:41,017 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:32:41,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:32:41,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:32:41,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:32:41,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:32:41,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:32:41,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:32:41,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:32:41,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:32:41,019 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:32:41,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:32:41,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:32:41,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:32:41,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:32:41,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:32:41,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:32:41,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:32:41,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:32:41,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:32:41,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:32:41,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:32:41,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:32:41,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:32:41,020 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:32:41,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:32:41,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:32:41,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:32:41,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:32:41,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:32:41,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:32:41,291 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:32:41,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-03-11 02:32:41,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24b82b88/23efd85d719e453c972c52ba012044d0/FLAG0b013cf49 [2021-03-11 02:32:41,737 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:32:41,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-03-11 02:32:41,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24b82b88/23efd85d719e453c972c52ba012044d0/FLAG0b013cf49 [2021-03-11 02:32:41,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24b82b88/23efd85d719e453c972c52ba012044d0 [2021-03-11 02:32:41,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:32:41,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:32:41,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:32:41,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:32:41,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:32:41,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:32:41" (1/1) ... [2021-03-11 02:32:41,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2063c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:41, skipping insertion in model container [2021-03-11 02:32:41,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:32:41" (1/1) ... [2021-03-11 02:32:41,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:32:41,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:32:41,978 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/safe012_tso.opt.i[949,962] [2021-03-11 02:32:42,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:32:42,101 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:32:42,110 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/safe012_tso.opt.i[949,962] [2021-03-11 02:32:42,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:32:42,186 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:32:42,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42 WrapperNode [2021-03-11 02:32:42,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:32:42,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:32:42,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:32:42,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:32:42,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:32:42,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:32:42,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:32:42,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:32:42,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (1/1) ... [2021-03-11 02:32:42,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:32:42,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:32:42,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:32:42,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:32:42,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (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 02:32:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:32:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:32:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:32:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:32:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:32:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:32:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:32:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:32:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:32:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:32:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:32:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:32:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:32:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:32:42,303 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 02:32:42,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:32:42,553 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:32:42,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:32:42 BoogieIcfgContainer [2021-03-11 02:32:42,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:32:42,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:32:42,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:32:42,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:32:42,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:32:41" (1/3) ... [2021-03-11 02:32:42,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716ad0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:32:42, skipping insertion in model container [2021-03-11 02:32:42,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:42" (2/3) ... [2021-03-11 02:32:42,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716ad0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:32:42, skipping insertion in model container [2021-03-11 02:32:42,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:32:42" (3/3) ... [2021-03-11 02:32:42,559 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2021-03-11 02:32:42,563 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:32:42,566 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:32:42,566 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:32:42,584 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,585 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,585 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,585 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,585 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,586 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,586 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,586 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,586 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,587 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,587 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,589 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,589 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,590 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,590 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,595 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,595 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:42,597 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:32:42,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:32:42,621 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:32:42,622 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:32:42,622 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:32:42,622 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:32:42,622 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:32:42,622 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:32:42,622 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:32:42,622 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:32:42,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-11 02:32:42,650 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-11 02:32:42,650 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:42,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:32:42,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-11 02:32:42,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-11 02:32:42,675 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-11 02:32:42,675 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:42,675 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:42,676 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] [2021-03-11 02:32:42,676 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:42,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:42,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1296421566, now seen corresponding path program 1 times [2021-03-11 02:32:42,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:42,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389695026] [2021-03-11 02:32:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:42,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:42,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:42,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:42,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:42,917 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:42,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:42,927 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:42,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:42,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:42,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:42,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:42,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:42,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:42,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:42,958 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 02:32:42,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389695026] [2021-03-11 02:32:42,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:42,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:42,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752549717] [2021-03-11 02:32:42,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:42,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:42,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:42,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:42,975 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 76 [2021-03-11 02:32:42,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 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 02:32:42,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:42,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 76 [2021-03-11 02:32:42,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:43,127 INFO L129 PetriNetUnfolder]: 46/174 cut-off events. [2021-03-11 02:32:43,127 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:43,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 174 events. 46/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 619 event pairs, 21 based on Foata normal form. 8/176 useless extension candidates. Maximal degree in co-relation 252. Up to 47 conditions per place. [2021-03-11 02:32:43,129 INFO L132 encePairwiseOnDemand]: 69/76 looper letters, 11 selfloop transitions, 2 changer transitions 19/80 dead transitions. [2021-03-11 02:32:43,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 233 flow [2021-03-11 02:32:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:32:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:32:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 576 transitions. [2021-03-11 02:32:43,138 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8421052631578947 [2021-03-11 02:32:43,139 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 576 transitions. [2021-03-11 02:32:43,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 576 transitions. [2021-03-11 02:32:43,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:43,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 576 transitions. [2021-03-11 02:32:43,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.0) internal successors, (576), 9 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:43,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:43,152 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:43,153 INFO L185 Difference]: Start difference. First operand has 70 places, 61 transitions, 131 flow. Second operand 9 states and 576 transitions. [2021-03-11 02:32:43,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 233 flow [2021-03-11 02:32:43,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 230 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:32:43,157 INFO L241 Difference]: Finished difference. Result has 82 places, 60 transitions, 146 flow [2021-03-11 02:32:43,159 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=146, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2021-03-11 02:32:43,159 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2021-03-11 02:32:43,159 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 146 flow [2021-03-11 02:32:43,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 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 02:32:43,160 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:43,160 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 02:32:43,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:32:43,160 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:43,160 INFO L82 PathProgramCache]: Analyzing trace with hash 417553791, now seen corresponding path program 1 times [2021-03-11 02:32:43,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:43,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019528724] [2021-03-11 02:32:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:43,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:43,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:43,206 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:43,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:43,226 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:43,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:43,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:43,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:43,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:43,256 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 02:32:43,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019528724] [2021-03-11 02:32:43,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:43,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:43,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662199402] [2021-03-11 02:32:43,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:43,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:43,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:43,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:43,261 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 76 [2021-03-11 02:32:43,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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 02:32:43,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:43,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 76 [2021-03-11 02:32:43,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:43,390 INFO L129 PetriNetUnfolder]: 21/137 cut-off events. [2021-03-11 02:32:43,391 INFO L130 PetriNetUnfolder]: For 35/37 co-relation queries the response was YES. [2021-03-11 02:32:43,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 137 events. 21/137 cut-off events. For 35/37 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 389 event pairs, 0 based on Foata normal form. 4/136 useless extension candidates. Maximal degree in co-relation 224. Up to 22 conditions per place. [2021-03-11 02:32:43,394 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 10 selfloop transitions, 4 changer transitions 16/78 dead transitions. [2021-03-11 02:32:43,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 78 transitions, 263 flow [2021-03-11 02:32:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:32:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:32:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 632 transitions. [2021-03-11 02:32:43,397 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-03-11 02:32:43,397 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 632 transitions. [2021-03-11 02:32:43,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 632 transitions. [2021-03-11 02:32:43,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:43,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 632 transitions. [2021-03-11 02:32:43,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.2) internal successors, (632), 10 states have internal predecessors, (632), 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 02:32:43,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:32:43,401 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:32:43,401 INFO L185 Difference]: Start difference. First operand has 82 places, 60 transitions, 146 flow. Second operand 10 states and 632 transitions. [2021-03-11 02:32:43,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 78 transitions, 263 flow [2021-03-11 02:32:43,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 78 transitions, 229 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-03-11 02:32:43,406 INFO L241 Difference]: Finished difference. Result has 84 places, 60 transitions, 154 flow [2021-03-11 02:32:43,406 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=84, PETRI_TRANSITIONS=60} [2021-03-11 02:32:43,406 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2021-03-11 02:32:43,406 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 60 transitions, 154 flow [2021-03-11 02:32:43,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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 02:32:43,407 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:43,407 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 02:32:43,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:32:43,407 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:43,413 INFO L82 PathProgramCache]: Analyzing trace with hash -929171362, now seen corresponding path program 1 times [2021-03-11 02:32:43,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:43,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872461997] [2021-03-11 02:32:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:43,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:43,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:43,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:43,502 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:43,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:43,510 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:43,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:43,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:43,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:43,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:43,550 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 02:32:43,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872461997] [2021-03-11 02:32:43,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:43,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:43,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995158613] [2021-03-11 02:32:43,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:43,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:43,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:43,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:43,552 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:32:43,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 60 transitions, 154 flow. Second operand has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 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 02:32:43,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:43,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:32:43,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:43,670 INFO L129 PetriNetUnfolder]: 24/127 cut-off events. [2021-03-11 02:32:43,670 INFO L130 PetriNetUnfolder]: For 46/73 co-relation queries the response was YES. [2021-03-11 02:32:43,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 127 events. 24/127 cut-off events. For 46/73 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 311 event pairs, 7 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 238. Up to 18 conditions per place. [2021-03-11 02:32:43,676 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 10 selfloop transitions, 4 changer transitions 21/80 dead transitions. [2021-03-11 02:32:43,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 287 flow [2021-03-11 02:32:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:32:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:32:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 616 transitions. [2021-03-11 02:32:43,677 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8105263157894737 [2021-03-11 02:32:43,678 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 616 transitions. [2021-03-11 02:32:43,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 616 transitions. [2021-03-11 02:32:43,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:43,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 616 transitions. [2021-03-11 02:32:43,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.6) internal successors, (616), 10 states have internal predecessors, (616), 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 02:32:43,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:32:43,681 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:32:43,681 INFO L185 Difference]: Start difference. First operand has 84 places, 60 transitions, 154 flow. Second operand 10 states and 616 transitions. [2021-03-11 02:32:43,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 287 flow [2021-03-11 02:32:43,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 251 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-03-11 02:32:43,685 INFO L241 Difference]: Finished difference. Result has 86 places, 59 transitions, 162 flow [2021-03-11 02:32:43,685 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=86, PETRI_TRANSITIONS=59} [2021-03-11 02:32:43,685 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2021-03-11 02:32:43,685 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 162 flow [2021-03-11 02:32:43,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 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 02:32:43,685 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:43,686 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 02:32:43,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:32:43,686 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:43,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:43,687 INFO L82 PathProgramCache]: Analyzing trace with hash -935715024, now seen corresponding path program 1 times [2021-03-11 02:32:43,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:43,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240715190] [2021-03-11 02:32:43,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:43,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:43,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:43,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:43,744 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:43,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:43,751 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:43,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:43,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:43,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:43,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:43,793 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 02:32:43,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240715190] [2021-03-11 02:32:43,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:43,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:43,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609212453] [2021-03-11 02:32:43,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:43,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:43,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:43,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:43,797 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:32:43,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 59 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 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 02:32:43,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:43,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:32:43,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:43,928 INFO L129 PetriNetUnfolder]: 23/129 cut-off events. [2021-03-11 02:32:43,928 INFO L130 PetriNetUnfolder]: For 85/96 co-relation queries the response was YES. [2021-03-11 02:32:43,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 129 events. 23/129 cut-off events. For 85/96 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 372 event pairs, 5 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 257. Up to 20 conditions per place. [2021-03-11 02:32:43,929 INFO L132 encePairwiseOnDemand]: 66/76 looper letters, 8 selfloop transitions, 6 changer transitions 22/81 dead transitions. [2021-03-11 02:32:43,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 81 transitions, 319 flow [2021-03-11 02:32:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:32:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:32:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 676 transitions. [2021-03-11 02:32:43,932 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8086124401913876 [2021-03-11 02:32:43,932 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 676 transitions. [2021-03-11 02:32:43,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 676 transitions. [2021-03-11 02:32:43,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:43,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 676 transitions. [2021-03-11 02:32:43,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.45454545454545) internal successors, (676), 11 states have internal predecessors, (676), 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 02:32:43,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 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 02:32:43,935 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 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 02:32:43,935 INFO L185 Difference]: Start difference. First operand has 86 places, 59 transitions, 162 flow. Second operand 11 states and 676 transitions. [2021-03-11 02:32:43,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 81 transitions, 319 flow [2021-03-11 02:32:43,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 256 flow, removed 23 selfloop flow, removed 11 redundant places. [2021-03-11 02:32:43,938 INFO L241 Difference]: Finished difference. Result has 86 places, 59 transitions, 166 flow [2021-03-11 02:32:43,940 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=166, PETRI_PLACES=86, PETRI_TRANSITIONS=59} [2021-03-11 02:32:43,940 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2021-03-11 02:32:43,941 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 166 flow [2021-03-11 02:32:43,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 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 02:32:43,941 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:43,941 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] [2021-03-11 02:32:43,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:32:43,941 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:43,942 INFO L82 PathProgramCache]: Analyzing trace with hash 374825275, now seen corresponding path program 1 times [2021-03-11 02:32:43,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:43,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647394432] [2021-03-11 02:32:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:43,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:43,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:43,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:44,001 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:44,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:44,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:44,031 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:44,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:44,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:44,038 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 02:32:44,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647394432] [2021-03-11 02:32:44,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:44,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:32:44,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976496374] [2021-03-11 02:32:44,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:32:44,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:44,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:32:44,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:32:44,040 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-03-11 02:32:44,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 59 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 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 02:32:44,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:44,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-03-11 02:32:44,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:44,141 INFO L129 PetriNetUnfolder]: 91/310 cut-off events. [2021-03-11 02:32:44,142 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2021-03-11 02:32:44,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 310 events. 91/310 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1583 event pairs, 25 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 530. Up to 81 conditions per place. [2021-03-11 02:32:44,144 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 10 selfloop transitions, 6 changer transitions 19/84 dead transitions. [2021-03-11 02:32:44,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 286 flow [2021-03-11 02:32:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:32:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:32:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 595 transitions. [2021-03-11 02:32:44,147 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8698830409356725 [2021-03-11 02:32:44,148 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 595 transitions. [2021-03-11 02:32:44,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 595 transitions. [2021-03-11 02:32:44,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:44,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 595 transitions. [2021-03-11 02:32:44,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.11111111111111) internal successors, (595), 9 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:44,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:44,150 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:44,150 INFO L185 Difference]: Start difference. First operand has 86 places, 59 transitions, 166 flow. Second operand 9 states and 595 transitions. [2021-03-11 02:32:44,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 286 flow [2021-03-11 02:32:44,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 256 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-03-11 02:32:44,155 INFO L241 Difference]: Finished difference. Result has 83 places, 62 transitions, 192 flow [2021-03-11 02:32:44,155 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=83, PETRI_TRANSITIONS=62} [2021-03-11 02:32:44,155 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 13 predicate places. [2021-03-11 02:32:44,155 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 192 flow [2021-03-11 02:32:44,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 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 02:32:44,156 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:44,156 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] [2021-03-11 02:32:44,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:32:44,156 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:44,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1883129236, now seen corresponding path program 1 times [2021-03-11 02:32:44,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:44,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361506299] [2021-03-11 02:32:44,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:44,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:44,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:44,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:44,206 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:44,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:44,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:44,223 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:44,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:44,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:44,230 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 02:32:44,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361506299] [2021-03-11 02:32:44,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:44,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:44,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663393073] [2021-03-11 02:32:44,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:44,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:44,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:44,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:44,231 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-03-11 02:32:44,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 62 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 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 02:32:44,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:44,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-03-11 02:32:44,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:44,353 INFO L129 PetriNetUnfolder]: 52/212 cut-off events. [2021-03-11 02:32:44,354 INFO L130 PetriNetUnfolder]: For 254/301 co-relation queries the response was YES. [2021-03-11 02:32:44,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 212 events. 52/212 cut-off events. For 254/301 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 857 event pairs, 0 based on Foata normal form. 14/222 useless extension candidates. Maximal degree in co-relation 561. Up to 75 conditions per place. [2021-03-11 02:32:44,355 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 10 selfloop transitions, 9 changer transitions 19/87 dead transitions. [2021-03-11 02:32:44,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 445 flow [2021-03-11 02:32:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:32:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:32:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 660 transitions. [2021-03-11 02:32:44,356 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.868421052631579 [2021-03-11 02:32:44,356 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 660 transitions. [2021-03-11 02:32:44,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 660 transitions. [2021-03-11 02:32:44,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:44,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 660 transitions. [2021-03-11 02:32:44,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 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 02:32:44,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:32:44,359 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:32:44,359 INFO L185 Difference]: Start difference. First operand has 83 places, 62 transitions, 192 flow. Second operand 10 states and 660 transitions. [2021-03-11 02:32:44,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 445 flow [2021-03-11 02:32:44,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 421 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 02:32:44,362 INFO L241 Difference]: Finished difference. Result has 89 places, 65 transitions, 260 flow [2021-03-11 02:32:44,362 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=260, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2021-03-11 02:32:44,362 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2021-03-11 02:32:44,362 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 260 flow [2021-03-11 02:32:44,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 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 02:32:44,363 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:44,363 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] [2021-03-11 02:32:44,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:32:44,363 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:44,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:44,363 INFO L82 PathProgramCache]: Analyzing trace with hash -333882655, now seen corresponding path program 1 times [2021-03-11 02:32:44,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:44,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277603276] [2021-03-11 02:32:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:44,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:44,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:44,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:44,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:44,424 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:44,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:44,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:44,444 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:44,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:44,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:44,451 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 02:32:44,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277603276] [2021-03-11 02:32:44,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:44,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:44,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697128323] [2021-03-11 02:32:44,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:44,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:44,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:44,453 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-03-11 02:32:44,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 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 02:32:44,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:44,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-03-11 02:32:44,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:44,564 INFO L129 PetriNetUnfolder]: 16/105 cut-off events. [2021-03-11 02:32:44,564 INFO L130 PetriNetUnfolder]: For 390/437 co-relation queries the response was YES. [2021-03-11 02:32:44,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 105 events. 16/105 cut-off events. For 390/437 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 220 event pairs, 0 based on Foata normal form. 14/118 useless extension candidates. Maximal degree in co-relation 324. Up to 30 conditions per place. [2021-03-11 02:32:44,565 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 4 selfloop transitions, 12 changer transitions 13/78 dead transitions. [2021-03-11 02:32:44,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 78 transitions, 444 flow [2021-03-11 02:32:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:32:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:32:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 713 transitions. [2021-03-11 02:32:44,568 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8528708133971292 [2021-03-11 02:32:44,568 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 713 transitions. [2021-03-11 02:32:44,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 713 transitions. [2021-03-11 02:32:44,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:44,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 713 transitions. [2021-03-11 02:32:44,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.81818181818181) internal successors, (713), 11 states have internal predecessors, (713), 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 02:32:44,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 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 02:32:44,571 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 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 02:32:44,571 INFO L185 Difference]: Start difference. First operand has 89 places, 65 transitions, 260 flow. Second operand 11 states and 713 transitions. [2021-03-11 02:32:44,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 78 transitions, 444 flow [2021-03-11 02:32:44,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 78 transitions, 345 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-03-11 02:32:44,575 INFO L241 Difference]: Finished difference. Result has 91 places, 65 transitions, 246 flow [2021-03-11 02:32:44,575 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=246, PETRI_PLACES=91, PETRI_TRANSITIONS=65} [2021-03-11 02:32:44,576 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2021-03-11 02:32:44,576 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 65 transitions, 246 flow [2021-03-11 02:32:44,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 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 02:32:44,576 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:44,576 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, 1] [2021-03-11 02:32:44,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:32:44,576 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:44,577 INFO L82 PathProgramCache]: Analyzing trace with hash 104630178, now seen corresponding path program 1 times [2021-03-11 02:32:44,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:44,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774297766] [2021-03-11 02:32:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:44,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:44,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:44,620 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:44,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:44,625 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:44,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:44,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:44,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:44,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:44,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:44,649 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 02:32:44,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774297766] [2021-03-11 02:32:44,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:44,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:44,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476757196] [2021-03-11 02:32:44,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:44,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:44,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:44,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:44,650 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:32:44,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 65 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 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 02:32:44,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:44,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:32:44,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:44,719 INFO L129 PetriNetUnfolder]: 5/74 cut-off events. [2021-03-11 02:32:44,719 INFO L130 PetriNetUnfolder]: For 72/78 co-relation queries the response was YES. [2021-03-11 02:32:44,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 74 events. 5/74 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 0 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 145. Up to 11 conditions per place. [2021-03-11 02:32:44,720 INFO L132 encePairwiseOnDemand]: 66/76 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2021-03-11 02:32:44,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 63 transitions, 268 flow [2021-03-11 02:32:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:32:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:32:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 478 transitions. [2021-03-11 02:32:44,721 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7861842105263158 [2021-03-11 02:32:44,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 478 transitions. [2021-03-11 02:32:44,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 478 transitions. [2021-03-11 02:32:44,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:44,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 478 transitions. [2021-03-11 02:32:44,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 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 02:32:44,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 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 02:32:44,723 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 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 02:32:44,723 INFO L185 Difference]: Start difference. First operand has 91 places, 65 transitions, 246 flow. Second operand 8 states and 478 transitions. [2021-03-11 02:32:44,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 63 transitions, 268 flow [2021-03-11 02:32:44,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 63 transitions, 186 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-03-11 02:32:44,724 INFO L241 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2021-03-11 02:32:44,724 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2021-03-11 02:32:44,725 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2021-03-11 02:32:44,725 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2021-03-11 02:32:44,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 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 02:32:44,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:32:44,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:32:44 BasicIcfg [2021-03-11 02:32:44,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:32:44,730 INFO L168 Benchmark]: Toolchain (without parser) took 2962.21 ms. Allocated memory was 335.5 MB in the beginning and 406.8 MB in the end (delta: 71.3 MB). Free memory was 298.6 MB in the beginning and 380.1 MB in the end (delta: -81.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:32:44,731 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 335.5 MB. Free memory is still 316.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:32:44,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.97 ms. Allocated memory is still 335.5 MB. Free memory was 298.0 MB in the beginning and 297.9 MB in the end (delta: 91.8 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:44,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.40 ms. Allocated memory is still 335.5 MB. Free memory was 297.9 MB in the beginning and 295.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:44,735 INFO L168 Benchmark]: Boogie Preprocessor took 27.29 ms. Allocated memory is still 335.5 MB. Free memory was 295.8 MB in the beginning and 294.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:44,736 INFO L168 Benchmark]: RCFGBuilder took 296.87 ms. Allocated memory is still 335.5 MB. Free memory was 294.7 MB in the beginning and 271.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:44,736 INFO L168 Benchmark]: TraceAbstraction took 2173.22 ms. Allocated memory was 335.5 MB in the beginning and 406.8 MB in the end (delta: 71.3 MB). Free memory was 271.6 MB in the beginning and 380.1 MB in the end (delta: -108.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:32:44,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 335.5 MB. Free memory is still 316.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 414.97 ms. Allocated memory is still 335.5 MB. Free memory was 298.0 MB in the beginning and 297.9 MB in the end (delta: 91.8 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.40 ms. Allocated memory is still 335.5 MB. Free memory was 297.9 MB in the beginning and 295.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.29 ms. Allocated memory is still 335.5 MB. Free memory was 295.8 MB in the beginning and 294.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 296.87 ms. Allocated memory is still 335.5 MB. Free memory was 294.7 MB in the beginning and 271.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2173.22 ms. Allocated memory was 335.5 MB in the beginning and 406.8 MB in the end (delta: 71.3 MB). Free memory was 271.6 MB in the beginning and 380.1 MB in the end (delta: -108.5 MB). There was no memory consumed. 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, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 19.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2107.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1061.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 91 SDtfs, 199 SDslu, 304 SDs, 0 SdLazy, 324 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 190.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 722.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=260occurred in iteration=6, InterpolantAutomatonStates: 78, 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: 22.0ms SsaConstructionTime, 182.9ms SatisfiabilityAnalysisTime, 646.5ms InterpolantComputationTime, 378 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 1522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...