/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/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:36:17,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:36:17,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:36:17,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:36:17,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:36:17,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:36:17,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:36:17,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:36:17,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:36:17,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:36:17,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:36:17,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:36:17,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:36:17,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:36:17,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:36:17,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:36:17,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:36:17,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:36:17,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:36:17,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:36:17,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:36:17,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:36:17,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:36:17,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:36:17,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 02:36:17,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 02:36:17,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 02:36:17,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 02:36:17,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 02:36:17,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 02:36:17,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 02:36:17,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 02:36:17,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 02:36:17,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 02:36:17,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 02:36:17,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 02:36:17,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 02:36:17,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 02:36:17,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:36:17,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:36:17,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:36:17,157 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 02:36:17,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:36:17,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:36:17,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:36:17,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:36:17,193 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:36:17,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:36:17,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:36:17,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:36:17,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:36:17,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:36:17,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:36:17,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:36:17,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:36:17,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:36:17,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:36:17,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:36:17,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:36:17,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:36:17,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:36:17,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:36:17,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:36:17,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:36:17,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:36:17,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:36:17,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:36:17,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:36:17,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:36:17,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:36:17,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:36:17,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:36:17,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:36:17,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:36:17,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:36:17,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:36:17,454 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:36:17,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-03-11 02:36:17,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec2a8ff1f/5507c47517094e8ab2e1ed84bc39d236/FLAG7a4c0a7aa [2021-03-11 02:36:17,879 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:36:17,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-03-11 02:36:17,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec2a8ff1f/5507c47517094e8ab2e1ed84bc39d236/FLAG7a4c0a7aa [2021-03-11 02:36:17,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec2a8ff1f/5507c47517094e8ab2e1ed84bc39d236 [2021-03-11 02:36:17,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:36:17,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:36:17,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:36:17,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:36:17,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:36:17,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:36:17" (1/1) ... [2021-03-11 02:36:17,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5b00c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:17, skipping insertion in model container [2021-03-11 02:36:17,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:36:17" (1/1) ... [2021-03-11 02:36:17,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:36:17,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:36:18,100 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/safe026_tso.opt.i[949,962] [2021-03-11 02:36:18,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:36:18,227 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:36:18,235 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/safe026_tso.opt.i[949,962] [2021-03-11 02:36:18,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:36:18,306 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:36:18,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18 WrapperNode [2021-03-11 02:36:18,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:36:18,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:36:18,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:36:18,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:36:18,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:36:18,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:36:18,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:36:18,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:36:18,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (1/1) ... [2021-03-11 02:36:18,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:36:18,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:36:18,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:36:18,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:36:18,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (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 02:36:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:36:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:36:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:36:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:36:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:36:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:36:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:36:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:36:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:36:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:36:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:36:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:36:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:36:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:36:18,427 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 02:36:18,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:36:18,668 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:36:18,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:36:18 BoogieIcfgContainer [2021-03-11 02:36:18,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:36:18,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:36:18,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:36:18,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:36:18,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:36:17" (1/3) ... [2021-03-11 02:36:18,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b924ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:36:18, skipping insertion in model container [2021-03-11 02:36:18,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:18" (2/3) ... [2021-03-11 02:36:18,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b924ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:36:18, skipping insertion in model container [2021-03-11 02:36:18,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:36:18" (3/3) ... [2021-03-11 02:36:18,673 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2021-03-11 02:36:18,676 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:36:18,679 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:36:18,680 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:36:18,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,698 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,698 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,702 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,704 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,704 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,704 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,707 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,707 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,709 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,709 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:18,710 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:36:18,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:36:18,734 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:36:18,734 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:36:18,734 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:36:18,735 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:36:18,735 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:36:18,735 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:36:18,735 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:36:18,735 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:36:18,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 02:36:18,762 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 02:36:18,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:36:18,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 02:36:18,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 02:36:18,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-11 02:36:18,792 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-03-11 02:36:18,792 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:36:18,793 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:18,793 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] [2021-03-11 02:36:18,793 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:18,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2057023066, now seen corresponding path program 1 times [2021-03-11 02:36:18,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:18,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52434545] [2021-03-11 02:36:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:19,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:19,008 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:36:19,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:36:19,020 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:19,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:19,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:19,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:19,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:19,051 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 02:36:19,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52434545] [2021-03-11 02:36:19,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:19,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:36:19,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923537879] [2021-03-11 02:36:19,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:36:19,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:19,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:36:19,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:36:19,068 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-03-11 02:36:19,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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 02:36:19,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:19,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-03-11 02:36:19,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:19,347 INFO L129 PetriNetUnfolder]: 194/542 cut-off events. [2021-03-11 02:36:19,347 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:36:19,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 542 events. 194/542 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3176 event pairs, 30 based on Foata normal form. 23/549 useless extension candidates. Maximal degree in co-relation 880. Up to 147 conditions per place. [2021-03-11 02:36:19,359 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 14 selfloop transitions, 7 changer transitions 31/96 dead transitions. [2021-03-11 02:36:19,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 305 flow [2021-03-11 02:36:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:36:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:36:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2021-03-11 02:36:19,369 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.852359208523592 [2021-03-11 02:36:19,369 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2021-03-11 02:36:19,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2021-03-11 02:36:19,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:19,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2021-03-11 02:36:19,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.22222222222222) internal successors, (560), 9 states have internal predecessors, (560), 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 02:36:19,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 02:36:19,382 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 02:36:19,383 INFO L185 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 9 states and 560 transitions. [2021-03-11 02:36:19,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 305 flow [2021-03-11 02:36:19,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 302 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:36:19,390 INFO L241 Difference]: Finished difference. Result has 80 places, 61 transitions, 202 flow [2021-03-11 02:36:19,391 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2021-03-11 02:36:19,392 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2021-03-11 02:36:19,392 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 202 flow [2021-03-11 02:36:19,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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 02:36:19,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:19,392 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 02:36:19,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:36:19,393 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:19,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:19,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2027535065, now seen corresponding path program 1 times [2021-03-11 02:36:19,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:19,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041812624] [2021-03-11 02:36:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:19,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:19,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:19,472 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:36:19,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:36:19,479 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:19,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:19,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:19,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:19,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:19,509 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 02:36:19,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041812624] [2021-03-11 02:36:19,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:19,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:36:19,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065547334] [2021-03-11 02:36:19,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:36:19,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:36:19,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:36:19,512 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-03-11 02:36:19,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 02:36:19,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:19,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-03-11 02:36:19,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:19,746 INFO L129 PetriNetUnfolder]: 114/395 cut-off events. [2021-03-11 02:36:19,746 INFO L130 PetriNetUnfolder]: For 640/761 co-relation queries the response was YES. [2021-03-11 02:36:19,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 395 events. 114/395 cut-off events. For 640/761 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2192 event pairs, 20 based on Foata normal form. 10/394 useless extension candidates. Maximal degree in co-relation 1140. Up to 118 conditions per place. [2021-03-11 02:36:19,750 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 17 selfloop transitions, 6 changer transitions 28/95 dead transitions. [2021-03-11 02:36:19,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 95 transitions, 514 flow [2021-03-11 02:36:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:36:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:36:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 777 transitions. [2021-03-11 02:36:19,754 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8187565858798735 [2021-03-11 02:36:19,754 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 777 transitions. [2021-03-11 02:36:19,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 777 transitions. [2021-03-11 02:36:19,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:19,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 777 transitions. [2021-03-11 02:36:19,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.76923076923077) internal successors, (777), 13 states have internal predecessors, (777), 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 02:36:19,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:36:19,759 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:36:19,759 INFO L185 Difference]: Start difference. First operand has 80 places, 61 transitions, 202 flow. Second operand 13 states and 777 transitions. [2021-03-11 02:36:19,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 95 transitions, 514 flow [2021-03-11 02:36:19,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 440 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-03-11 02:36:19,764 INFO L241 Difference]: Finished difference. Result has 96 places, 63 transitions, 242 flow [2021-03-11 02:36:19,765 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=242, PETRI_PLACES=96, PETRI_TRANSITIONS=63} [2021-03-11 02:36:19,765 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2021-03-11 02:36:19,765 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 242 flow [2021-03-11 02:36:19,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 02:36:19,765 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:19,766 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 02:36:19,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:36:19,766 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:19,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:19,766 INFO L82 PathProgramCache]: Analyzing trace with hash -310615161, now seen corresponding path program 1 times [2021-03-11 02:36:19,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:19,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105047260] [2021-03-11 02:36:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:19,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:19,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:19,819 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:36:19,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:36:19,826 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:19,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:19,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:19,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:19,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:19,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:19,849 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 02:36:19,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105047260] [2021-03-11 02:36:19,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:19,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:36:19,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427903316] [2021-03-11 02:36:19,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:36:19,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:19,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:36:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:36:19,852 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-03-11 02:36:19,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 63 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 02:36:19,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:19,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-03-11 02:36:19,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:20,011 INFO L129 PetriNetUnfolder]: 94/340 cut-off events. [2021-03-11 02:36:20,011 INFO L130 PetriNetUnfolder]: For 1066/1207 co-relation queries the response was YES. [2021-03-11 02:36:20,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 340 events. 94/340 cut-off events. For 1066/1207 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1793 event pairs, 15 based on Foata normal form. 15/348 useless extension candidates. Maximal degree in co-relation 1144. Up to 99 conditions per place. [2021-03-11 02:36:20,016 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 15 selfloop transitions, 13 changer transitions 34/106 dead transitions. [2021-03-11 02:36:20,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 728 flow [2021-03-11 02:36:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:36:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:36:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 789 transitions. [2021-03-11 02:36:20,022 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8314014752370916 [2021-03-11 02:36:20,022 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 789 transitions. [2021-03-11 02:36:20,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 789 transitions. [2021-03-11 02:36:20,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:20,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 789 transitions. [2021-03-11 02:36:20,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.69230769230769) internal successors, (789), 13 states have internal predecessors, (789), 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 02:36:20,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:36:20,026 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:36:20,026 INFO L185 Difference]: Start difference. First operand has 96 places, 63 transitions, 242 flow. Second operand 13 states and 789 transitions. [2021-03-11 02:36:20,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 728 flow [2021-03-11 02:36:20,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 106 transitions, 642 flow, removed 41 selfloop flow, removed 10 redundant places. [2021-03-11 02:36:20,033 INFO L241 Difference]: Finished difference. Result has 100 places, 67 transitions, 313 flow [2021-03-11 02:36:20,034 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=313, PETRI_PLACES=100, PETRI_TRANSITIONS=67} [2021-03-11 02:36:20,034 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 33 predicate places. [2021-03-11 02:36:20,034 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions, 313 flow [2021-03-11 02:36:20,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 02:36:20,034 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:20,034 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 02:36:20,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:36:20,034 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:20,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:20,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1982192824, now seen corresponding path program 1 times [2021-03-11 02:36:20,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:20,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773396912] [2021-03-11 02:36:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:20,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:20,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:20,098 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:36:20,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:36:20,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:36:20,114 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:36:20,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:20,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:20,120 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 02:36:20,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773396912] [2021-03-11 02:36:20,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:20,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:36:20,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380249214] [2021-03-11 02:36:20,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:36:20,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:20,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:36:20,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:36:20,122 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:36:20,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 67 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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 02:36:20,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:20,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:36:20,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:20,263 INFO L129 PetriNetUnfolder]: 389/988 cut-off events. [2021-03-11 02:36:20,264 INFO L130 PetriNetUnfolder]: For 1016/1042 co-relation queries the response was YES. [2021-03-11 02:36:20,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 988 events. 389/988 cut-off events. For 1016/1042 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7494 event pairs, 62 based on Foata normal form. 1/887 useless extension candidates. Maximal degree in co-relation 2231. Up to 262 conditions per place. [2021-03-11 02:36:20,271 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 24 selfloop transitions, 17 changer transitions 0/97 dead transitions. [2021-03-11 02:36:20,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 455 flow [2021-03-11 02:36:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:36:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:36:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2021-03-11 02:36:20,273 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8671232876712329 [2021-03-11 02:36:20,273 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 633 transitions. [2021-03-11 02:36:20,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 633 transitions. [2021-03-11 02:36:20,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:20,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 633 transitions. [2021-03-11 02:36:20,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 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 02:36:20,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 02:36:20,276 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 02:36:20,276 INFO L185 Difference]: Start difference. First operand has 100 places, 67 transitions, 313 flow. Second operand 10 states and 633 transitions. [2021-03-11 02:36:20,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 455 flow [2021-03-11 02:36:20,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 97 transitions, 423 flow, removed 16 selfloop flow, removed 12 redundant places. [2021-03-11 02:36:20,282 INFO L241 Difference]: Finished difference. Result has 94 places, 82 transitions, 401 flow [2021-03-11 02:36:20,282 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=401, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2021-03-11 02:36:20,282 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 27 predicate places. [2021-03-11 02:36:20,283 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 401 flow [2021-03-11 02:36:20,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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 02:36:20,283 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:20,283 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] [2021-03-11 02:36:20,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:36:20,283 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash -615660894, now seen corresponding path program 1 times [2021-03-11 02:36:20,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:20,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150570768] [2021-03-11 02:36:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:20,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:20,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:20,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:20,333 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:36:20,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:36:20,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:36:20,351 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:36:20,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:20,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:20,359 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 02:36:20,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150570768] [2021-03-11 02:36:20,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:20,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:36:20,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067944273] [2021-03-11 02:36:20,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:36:20,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:20,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:36:20,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:36:20,361 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:36:20,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 02:36:20,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:20,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:36:20,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:20,590 INFO L129 PetriNetUnfolder]: 352/971 cut-off events. [2021-03-11 02:36:20,591 INFO L130 PetriNetUnfolder]: For 2170/2714 co-relation queries the response was YES. [2021-03-11 02:36:20,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 971 events. 352/971 cut-off events. For 2170/2714 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7745 event pairs, 4 based on Foata normal form. 119/1017 useless extension candidates. Maximal degree in co-relation 3258. Up to 361 conditions per place. [2021-03-11 02:36:20,598 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 20 selfloop transitions, 32 changer transitions 9/117 dead transitions. [2021-03-11 02:36:20,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 117 transitions, 747 flow [2021-03-11 02:36:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:36:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:36:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 824 transitions. [2021-03-11 02:36:20,603 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8682824025289779 [2021-03-11 02:36:20,603 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 824 transitions. [2021-03-11 02:36:20,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 824 transitions. [2021-03-11 02:36:20,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:20,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 824 transitions. [2021-03-11 02:36:20,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.38461538461539) internal successors, (824), 13 states have internal predecessors, (824), 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 02:36:20,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:36:20,608 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:36:20,608 INFO L185 Difference]: Start difference. First operand has 94 places, 82 transitions, 401 flow. Second operand 13 states and 824 transitions. [2021-03-11 02:36:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 117 transitions, 747 flow [2021-03-11 02:36:20,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 745 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 02:36:20,615 INFO L241 Difference]: Finished difference. Result has 109 places, 102 transitions, 642 flow [2021-03-11 02:36:20,615 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=642, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2021-03-11 02:36:20,615 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 42 predicate places. [2021-03-11 02:36:20,615 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 642 flow [2021-03-11 02:36:20,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 02:36:20,616 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:20,616 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 02:36:20,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:36:20,616 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1019139499, now seen corresponding path program 1 times [2021-03-11 02:36:20,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:20,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144594966] [2021-03-11 02:36:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:20,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:20,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:20,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:20,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:20,682 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:36:20,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:36:20,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:36:20,698 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:36:20,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:20,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:20,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:20,705 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 02:36:20,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144594966] [2021-03-11 02:36:20,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:20,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:36:20,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140730963] [2021-03-11 02:36:20,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:36:20,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:20,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:36:20,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:36:20,706 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:36:20,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 642 flow. Second operand has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 02:36:20,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:20,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:36:20,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:20,940 INFO L129 PetriNetUnfolder]: 281/872 cut-off events. [2021-03-11 02:36:20,940 INFO L130 PetriNetUnfolder]: For 3521/4693 co-relation queries the response was YES. [2021-03-11 02:36:20,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3535 conditions, 872 events. 281/872 cut-off events. For 3521/4693 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7299 event pairs, 0 based on Foata normal form. 132/932 useless extension candidates. Maximal degree in co-relation 3477. Up to 289 conditions per place. [2021-03-11 02:36:20,947 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 16 selfloop transitions, 36 changer transitions 20/128 dead transitions. [2021-03-11 02:36:20,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 128 transitions, 960 flow [2021-03-11 02:36:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 02:36:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-11 02:36:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1000 transitions. [2021-03-11 02:36:20,949 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8561643835616438 [2021-03-11 02:36:20,949 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1000 transitions. [2021-03-11 02:36:20,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1000 transitions. [2021-03-11 02:36:20,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:20,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1000 transitions. [2021-03-11 02:36:20,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 62.5) internal successors, (1000), 16 states have internal predecessors, (1000), 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 02:36:20,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 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 02:36:20,953 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 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 02:36:20,953 INFO L185 Difference]: Start difference. First operand has 109 places, 102 transitions, 642 flow. Second operand 16 states and 1000 transitions. [2021-03-11 02:36:20,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 128 transitions, 960 flow [2021-03-11 02:36:20,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 128 transitions, 800 flow, removed 65 selfloop flow, removed 7 redundant places. [2021-03-11 02:36:20,969 INFO L241 Difference]: Finished difference. Result has 124 places, 102 transitions, 632 flow [2021-03-11 02:36:20,969 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=632, PETRI_PLACES=124, PETRI_TRANSITIONS=102} [2021-03-11 02:36:20,969 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 57 predicate places. [2021-03-11 02:36:20,969 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 102 transitions, 632 flow [2021-03-11 02:36:20,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 02:36:20,969 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:20,969 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 02:36:20,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:36:20,970 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:20,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1337510155, now seen corresponding path program 1 times [2021-03-11 02:36:20,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:20,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328291393] [2021-03-11 02:36:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:21,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:21,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:21,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:21,027 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:21,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:21,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:21,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:21,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:21,058 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 02:36:21,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328291393] [2021-03-11 02:36:21,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:21,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:36:21,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556674333] [2021-03-11 02:36:21,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:36:21,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:21,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:36:21,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:36:21,060 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:36:21,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 102 transitions, 632 flow. Second operand has 7 states, 7 states have (on average 60.42857142857143) internal successors, (423), 7 states have internal predecessors, (423), 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 02:36:21,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:21,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:36:21,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:21,203 INFO L129 PetriNetUnfolder]: 244/1003 cut-off events. [2021-03-11 02:36:21,204 INFO L130 PetriNetUnfolder]: For 2236/2348 co-relation queries the response was YES. [2021-03-11 02:36:21,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 1003 events. 244/1003 cut-off events. For 2236/2348 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9382 event pairs, 0 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 3025. Up to 132 conditions per place. [2021-03-11 02:36:21,208 INFO L132 encePairwiseOnDemand]: 67/73 looper letters, 9 selfloop transitions, 1 changer transitions 45/107 dead transitions. [2021-03-11 02:36:21,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 107 transitions, 684 flow [2021-03-11 02:36:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:36:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:36:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2021-03-11 02:36:21,209 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8395303326810176 [2021-03-11 02:36:21,209 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2021-03-11 02:36:21,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2021-03-11 02:36:21,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:21,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2021-03-11 02:36:21,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 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 02:36:21,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 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 02:36:21,211 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 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 02:36:21,211 INFO L185 Difference]: Start difference. First operand has 124 places, 102 transitions, 632 flow. Second operand 7 states and 429 transitions. [2021-03-11 02:36:21,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 107 transitions, 684 flow [2021-03-11 02:36:21,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 603 flow, removed 16 selfloop flow, removed 14 redundant places. [2021-03-11 02:36:21,225 INFO L241 Difference]: Finished difference. Result has 118 places, 62 transitions, 267 flow [2021-03-11 02:36:21,225 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=118, PETRI_TRANSITIONS=62} [2021-03-11 02:36:21,225 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 51 predicate places. [2021-03-11 02:36:21,225 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 62 transitions, 267 flow [2021-03-11 02:36:21,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.42857142857143) internal successors, (423), 7 states have internal predecessors, (423), 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 02:36:21,225 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:21,225 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 02:36:21,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:36:21,226 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:21,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:21,226 INFO L82 PathProgramCache]: Analyzing trace with hash -524191007, now seen corresponding path program 2 times [2021-03-11 02:36:21,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:21,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205571745] [2021-03-11 02:36:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:21,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:21,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:21,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:21,283 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:36:21,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:36:21,290 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:21,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:21,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:21,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:21,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:21,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:21,315 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 02:36:21,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205571745] [2021-03-11 02:36:21,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:21,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:36:21,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980400429] [2021-03-11 02:36:21,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:36:21,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:21,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:36:21,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:36:21,316 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-03-11 02:36:21,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 62 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 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 02:36:21,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:21,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-03-11 02:36:21,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:21,361 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2021-03-11 02:36:21,361 INFO L130 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2021-03-11 02:36:21,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 84 events. 6/84 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 155 event pairs, 0 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 195. Up to 11 conditions per place. [2021-03-11 02:36:21,362 INFO L132 encePairwiseOnDemand]: 66/73 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2021-03-11 02:36:21,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 60 transitions, 285 flow [2021-03-11 02:36:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:36:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:36:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 405 transitions. [2021-03-11 02:36:21,363 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7925636007827789 [2021-03-11 02:36:21,363 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 405 transitions. [2021-03-11 02:36:21,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 405 transitions. [2021-03-11 02:36:21,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:21,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 405 transitions. [2021-03-11 02:36:21,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 57.857142857142854) internal successors, (405), 7 states have internal predecessors, (405), 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 02:36:21,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 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 02:36:21,365 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 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 02:36:21,365 INFO L185 Difference]: Start difference. First operand has 118 places, 62 transitions, 267 flow. Second operand 7 states and 405 transitions. [2021-03-11 02:36:21,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 60 transitions, 285 flow [2021-03-11 02:36:21,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 60 transitions, 188 flow, removed 16 selfloop flow, removed 28 redundant places. [2021-03-11 02:36:21,367 INFO L241 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2021-03-11 02:36:21,367 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2021-03-11 02:36:21,367 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2021-03-11 02:36:21,367 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2021-03-11 02:36:21,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 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 02:36:21,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:36:21,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:36:21 BasicIcfg [2021-03-11 02:36:21,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:36:21,371 INFO L168 Benchmark]: Toolchain (without parser) took 3464.60 ms. Allocated memory was 325.1 MB in the beginning and 390.1 MB in the end (delta: 65.0 MB). Free memory was 287.8 MB in the beginning and 304.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:21,372 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 325.1 MB. Free memory is still 306.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:36:21,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.80 ms. Allocated memory is still 325.1 MB. Free memory was 287.2 MB in the beginning and 287.0 MB in the end (delta: 188.1 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:21,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.59 ms. Allocated memory is still 325.1 MB. Free memory was 287.0 MB in the beginning and 284.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:21,376 INFO L168 Benchmark]: Boogie Preprocessor took 12.69 ms. Allocated memory is still 325.1 MB. Free memory was 284.9 MB in the beginning and 283.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:21,378 INFO L168 Benchmark]: RCFGBuilder took 318.05 ms. Allocated memory is still 325.1 MB. Free memory was 283.9 MB in the beginning and 258.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:21,379 INFO L168 Benchmark]: TraceAbstraction took 2701.02 ms. Allocated memory was 325.1 MB in the beginning and 390.1 MB in the end (delta: 65.0 MB). Free memory was 258.7 MB in the beginning and 304.7 MB in the end (delta: -46.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:21,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 325.1 MB. Free memory is still 306.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 394.80 ms. Allocated memory is still 325.1 MB. Free memory was 287.2 MB in the beginning and 287.0 MB in the end (delta: 188.1 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.59 ms. Allocated memory is still 325.1 MB. Free memory was 287.0 MB in the beginning and 284.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.69 ms. Allocated memory is still 325.1 MB. Free memory was 284.9 MB in the beginning and 283.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 318.05 ms. Allocated memory is still 325.1 MB. Free memory was 283.9 MB in the beginning and 258.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2701.02 ms. Allocated memory was 325.1 MB in the beginning and 390.1 MB in the end (delta: 65.0 MB). Free memory was 258.7 MB in the beginning and 304.7 MB in the end (delta: -46.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 25.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2636.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1663.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 96 SDtfs, 252 SDslu, 319 SDs, 0 SdLazy, 360 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 231.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 765.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=642occurred in iteration=5, InterpolantAutomatonStates: 88, 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: 29.6ms SsaConstructionTime, 158.6ms SatisfiabilityAnalysisTime, 589.5ms InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 346 ConstructedInterpolants, 0 QuantifiedInterpolants, 1434 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...