/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:24:00,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:24:00,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:24:00,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:24:00,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:24:00,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:24:00,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:24:00,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:24:00,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:24:00,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:24:00,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:24:00,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:24:00,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:24:00,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:24:00,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:24:00,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:24:00,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:24:00,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:24:00,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:24:00,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:24:00,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:24:00,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:24:00,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:24:00,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:24:00,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:24:00,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:24:00,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:24:00,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:24:00,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:24:00,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:24:00,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:24:00,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:24:00,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:24:00,229 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:24:00,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:24:00,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:24:00,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:24:00,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:24:00,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:24:00,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:24:00,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:24:00,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:24:00,231 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:24:00,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:24:00,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:24:00,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:24:00,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:24:00,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:24:00,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:24:00,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:24:00,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:24:00,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:24:00,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:24:00,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:24:00,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:24:00,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:24:00,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:24:00,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:24:00,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:24:00,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:24:00,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:24:00,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:24:00,484 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:24:00,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-03-11 20:24:00,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee05def7/be2f23fcde0341c4934a31d36baf2297/FLAGebee6c6e9 [2021-03-11 20:24:01,004 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:24:01,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-03-11 20:24:01,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee05def7/be2f23fcde0341c4934a31d36baf2297/FLAGebee6c6e9 [2021-03-11 20:24:01,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee05def7/be2f23fcde0341c4934a31d36baf2297 [2021-03-11 20:24:01,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:24:01,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:24:01,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:24:01,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:24:01,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:24:01,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352c31e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01, skipping insertion in model container [2021-03-11 20:24:01,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:24:01,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:24:01,212 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/safe015_tso.oepc.i[950,963] [2021-03-11 20:24:01,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:24:01,321 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:24:01,328 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/safe015_tso.oepc.i[950,963] [2021-03-11 20:24:01,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:24:01,389 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:24:01,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01 WrapperNode [2021-03-11 20:24:01,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:24:01,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:24:01,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:24:01,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:24:01,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:24:01,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:24:01,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:24:01,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:24:01,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (1/1) ... [2021-03-11 20:24:01,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:24:01,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:24:01,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:24:01,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:24:01,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (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 20:24:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:24:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:24:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:24:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:24:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:24:01,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:24:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:24:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:24:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:24:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:24:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:24:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:24:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:24:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:24:01,470 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 20:24:01,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:24:01,700 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:24:01,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:24:01 BoogieIcfgContainer [2021-03-11 20:24:01,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:24:01,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:24:01,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:24:01,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:24:01,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:24:01" (1/3) ... [2021-03-11 20:24:01,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133766d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:24:01, skipping insertion in model container [2021-03-11 20:24:01,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:01" (2/3) ... [2021-03-11 20:24:01,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133766d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:24:01, skipping insertion in model container [2021-03-11 20:24:01,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:24:01" (3/3) ... [2021-03-11 20:24:01,706 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2021-03-11 20:24:01,709 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:24:01,712 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:24:01,712 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:24:01,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,743 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,743 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,751 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,756 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,756 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:01,759 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:24:01,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:24:01,783 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:24:01,783 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:24:01,783 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:24:01,783 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:24:01,784 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:24:01,784 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:24:01,784 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:24:01,784 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:24:01,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:24:01,809 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 20:24:01,809 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:01,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:24:01,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:24:01,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 20:24:01,815 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:24:01,822 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:24:01,824 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:24:01,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-11 20:24:01,844 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 20:24:01,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:01,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:24:01,847 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:24:03,573 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-11 20:24:03,734 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-11 20:24:03,791 INFO L131 LiptonReduction]: Checked pairs total: 1773 [2021-03-11 20:24:03,792 INFO L133 LiptonReduction]: Total number of compositions: 46 [2021-03-11 20:24:03,793 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1980 [2021-03-11 20:24:03,798 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-11 20:24:03,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:03,798 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:03,799 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:03,799 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:03,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1348249452, now seen corresponding path program 1 times [2021-03-11 20:24:03,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:03,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565086479] [2021-03-11 20:24:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:03,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:03,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:24:03,916 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 20:24:03,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565086479] [2021-03-11 20:24:03,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:03,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:24:03,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123426447] [2021-03-11 20:24:03,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:24:03,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:03,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:24:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:24:03,932 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 120 [2021-03-11 20:24:03,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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 20:24:03,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:03,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 120 [2021-03-11 20:24:03,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:03,942 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:24:03,946 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:03,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 20:24:03,946 INFO L132 encePairwiseOnDemand]: 119/120 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-03-11 20:24:03,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2021-03-11 20:24:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:24:03,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:24:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 225 transitions. [2021-03-11 20:24:03,954 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9375 [2021-03-11 20:24:03,955 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 225 transitions. [2021-03-11 20:24:03,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 225 transitions. [2021-03-11 20:24:03,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:03,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 225 transitions. [2021-03-11 20:24:03,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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 20:24:03,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 20:24:03,966 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 20:24:03,967 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 225 transitions. [2021-03-11 20:24:03,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2021-03-11 20:24:03,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:24:03,970 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2021-03-11 20:24:03,971 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-03-11 20:24:03,971 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2021-03-11 20:24:03,971 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2021-03-11 20:24:03,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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 20:24:03,972 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:03,972 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:03,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:24:03,972 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:03,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:03,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1153939640, now seen corresponding path program 1 times [2021-03-11 20:24:03,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:03,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511023557] [2021-03-11 20:24:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:04,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511023557] [2021-03-11 20:24:04,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:24:04,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756659495] [2021-03-11 20:24:04,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:24:04,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:24:04,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:24:04,041 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 120 [2021-03-11 20:24:04,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 20:24:04,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 120 [2021-03-11 20:24:04,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,059 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2021-03-11 20:24:04,059 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:04,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 70 events. 21/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 241 event pairs, 11 based on Foata normal form. 3/68 useless extension candidates. Maximal degree in co-relation 117. Up to 37 conditions per place. [2021-03-11 20:24:04,060 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 6 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2021-03-11 20:24:04,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 60 flow [2021-03-11 20:24:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:24:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:24:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2021-03-11 20:24:04,062 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.825 [2021-03-11 20:24:04,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2021-03-11 20:24:04,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2021-03-11 20:24:04,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2021-03-11 20:24:04,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 20:24:04,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 20:24:04,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 20:24:04,064 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 297 transitions. [2021-03-11 20:24:04,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 60 flow [2021-03-11 20:24:04,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:24:04,065 INFO L241 Difference]: Finished difference. Result has 28 places, 17 transitions, 48 flow [2021-03-11 20:24:04,065 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2021-03-11 20:24:04,065 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-03-11 20:24:04,065 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 48 flow [2021-03-11 20:24:04,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 20:24:04,066 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,066 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:24:04,066 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1397616804, now seen corresponding path program 1 times [2021-03-11 20:24:04,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944560117] [2021-03-11 20:24:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:24:04,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,095 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 20:24:04,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944560117] [2021-03-11 20:24:04,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:24:04,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836178187] [2021-03-11 20:24:04,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:24:04,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:24:04,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:24:04,097 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 120 [2021-03-11 20:24:04,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 20:24:04,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 120 [2021-03-11 20:24:04,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,116 INFO L129 PetriNetUnfolder]: 13/49 cut-off events. [2021-03-11 20:24:04,116 INFO L130 PetriNetUnfolder]: For 12/19 co-relation queries the response was YES. [2021-03-11 20:24:04,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 49 events. 13/49 cut-off events. For 12/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 142 event pairs, 5 based on Foata normal form. 3/49 useless extension candidates. Maximal degree in co-relation 97. Up to 22 conditions per place. [2021-03-11 20:24:04,117 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 6 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2021-03-11 20:24:04,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 68 flow [2021-03-11 20:24:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:24:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:24:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2021-03-11 20:24:04,120 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.825 [2021-03-11 20:24:04,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2021-03-11 20:24:04,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2021-03-11 20:24:04,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2021-03-11 20:24:04,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 20:24:04,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 20:24:04,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 20:24:04,122 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 48 flow. Second operand 3 states and 297 transitions. [2021-03-11 20:24:04,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 68 flow [2021-03-11 20:24:04,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:24:04,123 INFO L241 Difference]: Finished difference. Result has 29 places, 17 transitions, 52 flow [2021-03-11 20:24:04,123 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=29, PETRI_TRANSITIONS=17} [2021-03-11 20:24:04,123 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-03-11 20:24:04,123 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 17 transitions, 52 flow [2021-03-11 20:24:04,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 20:24:04,124 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,124 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:24:04,124 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash 376446416, now seen corresponding path program 1 times [2021-03-11 20:24:04,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186538074] [2021-03-11 20:24:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,179 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 20:24:04,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186538074] [2021-03-11 20:24:04,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:24:04,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311269979] [2021-03-11 20:24:04,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:24:04,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:24:04,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:24:04,182 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 120 [2021-03-11 20:24:04,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 17 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 20:24:04,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 120 [2021-03-11 20:24:04,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,191 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:24:04,191 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-03-11 20:24:04,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 17 events. 0/17 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 20:24:04,192 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2021-03-11 20:24:04,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 17 transitions, 58 flow [2021-03-11 20:24:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:24:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:24:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-11 20:24:04,193 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-03-11 20:24:04,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-11 20:24:04,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-11 20:24:04,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-11 20:24:04,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 20:24:04,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 20:24:04,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 20:24:04,196 INFO L185 Difference]: Start difference. First operand has 29 places, 17 transitions, 52 flow. Second operand 3 states and 304 transitions. [2021-03-11 20:24:04,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 17 transitions, 58 flow [2021-03-11 20:24:04,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:24:04,197 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 56 flow [2021-03-11 20:24:04,197 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2021-03-11 20:24:04,197 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2021-03-11 20:24:04,197 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 56 flow [2021-03-11 20:24:04,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 20:24:04,197 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,197 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:24:04,198 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1763093591, now seen corresponding path program 1 times [2021-03-11 20:24:04,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464464399] [2021-03-11 20:24:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,246 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:24:04,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:24:04,258 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 20:24:04,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464464399] [2021-03-11 20:24:04,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:24:04,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257048167] [2021-03-11 20:24:04,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:24:04,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:24:04,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:24:04,261 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 120 [2021-03-11 20:24:04,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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 20:24:04,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 120 [2021-03-11 20:24:04,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,307 INFO L129 PetriNetUnfolder]: 39/118 cut-off events. [2021-03-11 20:24:04,307 INFO L130 PetriNetUnfolder]: For 70/90 co-relation queries the response was YES. [2021-03-11 20:24:04,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 118 events. 39/118 cut-off events. For 70/90 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 473 event pairs, 7 based on Foata normal form. 8/122 useless extension candidates. Maximal degree in co-relation 271. Up to 42 conditions per place. [2021-03-11 20:24:04,309 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 10 selfloop transitions, 9 changer transitions 0/28 dead transitions. [2021-03-11 20:24:04,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 128 flow [2021-03-11 20:24:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:24:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:24:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2021-03-11 20:24:04,312 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76875 [2021-03-11 20:24:04,312 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2021-03-11 20:24:04,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2021-03-11 20:24:04,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2021-03-11 20:24:04,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 20:24:04,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:24:04,315 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:24:04,315 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 56 flow. Second operand 4 states and 369 transitions. [2021-03-11 20:24:04,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 128 flow [2021-03-11 20:24:04,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:24:04,316 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 124 flow [2021-03-11 20:24:04,316 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2021-03-11 20:24:04,316 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2021-03-11 20:24:04,316 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 124 flow [2021-03-11 20:24:04,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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 20:24:04,319 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,319 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:24:04,319 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1292618131, now seen corresponding path program 1 times [2021-03-11 20:24:04,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664923771] [2021-03-11 20:24:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,347 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:24:04,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:24:04,360 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 20:24:04,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664923771] [2021-03-11 20:24:04,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:24:04,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666455311] [2021-03-11 20:24:04,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:24:04,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:24:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:24:04,366 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 120 [2021-03-11 20:24:04,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 20:24:04,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 120 [2021-03-11 20:24:04,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,450 INFO L129 PetriNetUnfolder]: 47/149 cut-off events. [2021-03-11 20:24:04,450 INFO L130 PetriNetUnfolder]: For 143/189 co-relation queries the response was YES. [2021-03-11 20:24:04,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 149 events. 47/149 cut-off events. For 143/189 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 694 event pairs, 1 based on Foata normal form. 5/150 useless extension candidates. Maximal degree in co-relation 501. Up to 48 conditions per place. [2021-03-11 20:24:04,455 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 13 selfloop transitions, 10 changer transitions 12/44 dead transitions. [2021-03-11 20:24:04,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 298 flow [2021-03-11 20:24:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:24:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:24:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2021-03-11 20:24:04,456 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76 [2021-03-11 20:24:04,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2021-03-11 20:24:04,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2021-03-11 20:24:04,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2021-03-11 20:24:04,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 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 20:24:04,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:24:04,459 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:24:04,459 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 124 flow. Second operand 5 states and 456 transitions. [2021-03-11 20:24:04,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 298 flow [2021-03-11 20:24:04,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:24:04,462 INFO L241 Difference]: Finished difference. Result has 41 places, 27 transitions, 180 flow [2021-03-11 20:24:04,462 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2021-03-11 20:24:04,462 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2021-03-11 20:24:04,462 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 180 flow [2021-03-11 20:24:04,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 20:24:04,462 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,462 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:24:04,463 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash -604355299, now seen corresponding path program 2 times [2021-03-11 20:24:04,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156314233] [2021-03-11 20:24:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,505 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-03-11 20:24:04,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:24:04,512 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 20:24:04,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156314233] [2021-03-11 20:24:04,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:24:04,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465693573] [2021-03-11 20:24:04,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:24:04,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:24:04,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:24:04,514 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:24:04,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:24:04,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:24:04,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,562 INFO L129 PetriNetUnfolder]: 110/278 cut-off events. [2021-03-11 20:24:04,562 INFO L130 PetriNetUnfolder]: For 995/1041 co-relation queries the response was YES. [2021-03-11 20:24:04,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 278 events. 110/278 cut-off events. For 995/1041 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1593 event pairs, 33 based on Foata normal form. 33/298 useless extension candidates. Maximal degree in co-relation 809. Up to 161 conditions per place. [2021-03-11 20:24:04,565 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 8 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2021-03-11 20:24:04,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 232 flow [2021-03-11 20:24:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:24:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:24:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-11 20:24:04,566 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2021-03-11 20:24:04,566 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-11 20:24:04,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-11 20:24:04,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-11 20:24:04,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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 20:24:04,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:24:04,568 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:24:04,568 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 180 flow. Second operand 5 states and 448 transitions. [2021-03-11 20:24:04,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 232 flow [2021-03-11 20:24:04,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 218 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-11 20:24:04,572 INFO L241 Difference]: Finished difference. Result has 45 places, 34 transitions, 226 flow [2021-03-11 20:24:04,573 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2021-03-11 20:24:04,573 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2021-03-11 20:24:04,573 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 226 flow [2021-03-11 20:24:04,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:24:04,573 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,573 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:24:04,573 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash 715170275, now seen corresponding path program 1 times [2021-03-11 20:24:04,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672140305] [2021-03-11 20:24:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:24:04,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,615 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:24:04,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:24:04,628 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 20:24:04,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672140305] [2021-03-11 20:24:04,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:24:04,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108031216] [2021-03-11 20:24:04,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:24:04,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:24:04,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:24:04,631 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 120 [2021-03-11 20:24:04,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 20:24:04,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 120 [2021-03-11 20:24:04,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,693 INFO L129 PetriNetUnfolder]: 126/319 cut-off events. [2021-03-11 20:24:04,693 INFO L130 PetriNetUnfolder]: For 880/1031 co-relation queries the response was YES. [2021-03-11 20:24:04,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 319 events. 126/319 cut-off events. For 880/1031 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 1991 event pairs, 33 based on Foata normal form. 41/338 useless extension candidates. Maximal degree in co-relation 1088. Up to 216 conditions per place. [2021-03-11 20:24:04,696 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 8 selfloop transitions, 12 changer transitions 19/55 dead transitions. [2021-03-11 20:24:04,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 459 flow [2021-03-11 20:24:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:24:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:24:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2021-03-11 20:24:04,697 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2021-03-11 20:24:04,697 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 546 transitions. [2021-03-11 20:24:04,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 546 transitions. [2021-03-11 20:24:04,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 546 transitions. [2021-03-11 20:24:04,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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 20:24:04,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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 20:24:04,699 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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 20:24:04,699 INFO L185 Difference]: Start difference. First operand has 45 places, 34 transitions, 226 flow. Second operand 6 states and 546 transitions. [2021-03-11 20:24:04,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 459 flow [2021-03-11 20:24:04,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:24:04,702 INFO L241 Difference]: Finished difference. Result has 53 places, 34 transitions, 277 flow [2021-03-11 20:24:04,702 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2021-03-11 20:24:04,702 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2021-03-11 20:24:04,702 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 277 flow [2021-03-11 20:24:04,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 20:24:04,703 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,703 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:24:04,703 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,703 INFO L82 PathProgramCache]: Analyzing trace with hash -838735347, now seen corresponding path program 2 times [2021-03-11 20:24:04,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407856273] [2021-03-11 20:24:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,744 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:24:04,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:24:04,749 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:24:04,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:24:04,758 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 20:24:04,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407856273] [2021-03-11 20:24:04,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:24:04,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926619580] [2021-03-11 20:24:04,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:24:04,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:24:04,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:24:04,760 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:24:04,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 20:24:04,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:24:04,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,826 INFO L129 PetriNetUnfolder]: 40/129 cut-off events. [2021-03-11 20:24:04,826 INFO L130 PetriNetUnfolder]: For 557/790 co-relation queries the response was YES. [2021-03-11 20:24:04,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 129 events. 40/129 cut-off events. For 557/790 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 622 event pairs, 1 based on Foata normal form. 68/188 useless extension candidates. Maximal degree in co-relation 544. Up to 84 conditions per place. [2021-03-11 20:24:04,827 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 4 selfloop transitions, 15 changer transitions 4/44 dead transitions. [2021-03-11 20:24:04,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 44 transitions, 381 flow [2021-03-11 20:24:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:24:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:24:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2021-03-11 20:24:04,829 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2021-03-11 20:24:04,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2021-03-11 20:24:04,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2021-03-11 20:24:04,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2021-03-11 20:24:04,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 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 20:24:04,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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 20:24:04,831 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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 20:24:04,831 INFO L185 Difference]: Start difference. First operand has 53 places, 34 transitions, 277 flow. Second operand 7 states and 627 transitions. [2021-03-11 20:24:04,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 44 transitions, 381 flow [2021-03-11 20:24:04,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 361 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 20:24:04,835 INFO L241 Difference]: Finished difference. Result has 56 places, 40 transitions, 348 flow [2021-03-11 20:24:04,835 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=348, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2021-03-11 20:24:04,835 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 29 predicate places. [2021-03-11 20:24:04,835 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 348 flow [2021-03-11 20:24:04,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 20:24:04,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,836 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:24:04,836 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,836 INFO L82 PathProgramCache]: Analyzing trace with hash -109459527, now seen corresponding path program 1 times [2021-03-11 20:24:04,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995054938] [2021-03-11 20:24:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:24:04,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,881 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:24:04,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:24:04,889 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 20:24:04,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995054938] [2021-03-11 20:24:04,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:04,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:24:04,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489888163] [2021-03-11 20:24:04,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:24:04,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:04,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:24:04,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:24:04,892 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 120 [2021-03-11 20:24:04,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:24:04,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:04,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 120 [2021-03-11 20:24:04,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:04,943 INFO L129 PetriNetUnfolder]: 41/144 cut-off events. [2021-03-11 20:24:04,944 INFO L130 PetriNetUnfolder]: For 636/820 co-relation queries the response was YES. [2021-03-11 20:24:04,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 144 events. 41/144 cut-off events. For 636/820 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 767 event pairs, 2 based on Foata normal form. 15/151 useless extension candidates. Maximal degree in co-relation 679. Up to 97 conditions per place. [2021-03-11 20:24:04,944 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 4 selfloop transitions, 12 changer transitions 14/45 dead transitions. [2021-03-11 20:24:04,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 45 transitions, 438 flow [2021-03-11 20:24:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:24:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:24:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2021-03-11 20:24:04,946 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-11 20:24:04,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2021-03-11 20:24:04,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2021-03-11 20:24:04,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:04,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2021-03-11 20:24:04,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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 20:24:04,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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 20:24:04,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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 20:24:04,948 INFO L185 Difference]: Start difference. First operand has 56 places, 40 transitions, 348 flow. Second operand 6 states and 540 transitions. [2021-03-11 20:24:04,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 45 transitions, 438 flow [2021-03-11 20:24:04,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 45 transitions, 403 flow, removed 13 selfloop flow, removed 2 redundant places. [2021-03-11 20:24:04,951 INFO L241 Difference]: Finished difference. Result has 61 places, 31 transitions, 279 flow [2021-03-11 20:24:04,952 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=61, PETRI_TRANSITIONS=31} [2021-03-11 20:24:04,952 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 34 predicate places. [2021-03-11 20:24:04,952 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 31 transitions, 279 flow [2021-03-11 20:24:04,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:24:04,952 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:04,952 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:04,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:24:04,952 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1763822603, now seen corresponding path program 2 times [2021-03-11 20:24:04,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:04,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720469880] [2021-03-11 20:24:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:04,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:04,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:04,993 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:24:04,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:24:04,999 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:24:04,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:24:05,005 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 20:24:05,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720469880] [2021-03-11 20:24:05,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:05,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:24:05,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470396648] [2021-03-11 20:24:05,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:24:05,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:05,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:24:05,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:24:05,006 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:24:05,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 31 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 20:24:05,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:05,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:24:05,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:05,040 INFO L129 PetriNetUnfolder]: 14/70 cut-off events. [2021-03-11 20:24:05,041 INFO L130 PetriNetUnfolder]: For 379/473 co-relation queries the response was YES. [2021-03-11 20:24:05,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 70 events. 14/70 cut-off events. For 379/473 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 247 event pairs, 0 based on Foata normal form. 49/116 useless extension candidates. Maximal degree in co-relation 324. Up to 29 conditions per place. [2021-03-11 20:24:05,041 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2021-03-11 20:24:05,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 33 transitions, 311 flow [2021-03-11 20:24:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 20:24:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 20:24:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 703 transitions. [2021-03-11 20:24:05,043 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7322916666666667 [2021-03-11 20:24:05,043 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 703 transitions. [2021-03-11 20:24:05,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 703 transitions. [2021-03-11 20:24:05,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:05,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 703 transitions. [2021-03-11 20:24:05,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 87.875) internal successors, (703), 8 states have internal predecessors, (703), 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 20:24:05,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 120.0) internal successors, (1080), 9 states have internal predecessors, (1080), 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 20:24:05,046 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 120.0) internal successors, (1080), 9 states have internal predecessors, (1080), 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 20:24:05,046 INFO L185 Difference]: Start difference. First operand has 61 places, 31 transitions, 279 flow. Second operand 8 states and 703 transitions. [2021-03-11 20:24:05,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 33 transitions, 311 flow [2021-03-11 20:24:05,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 33 transitions, 289 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-11 20:24:05,047 INFO L241 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2021-03-11 20:24:05,048 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2021-03-11 20:24:05,048 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 32 predicate places. [2021-03-11 20:24:05,048 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2021-03-11 20:24:05,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 20:24:05,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:24:05,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:24:05 BasicIcfg [2021-03-11 20:24:05,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:24:05,051 INFO L168 Benchmark]: Toolchain (without parser) took 4010.00 ms. Allocated memory was 255.9 MB in the beginning and 444.6 MB in the end (delta: 188.7 MB). Free memory was 235.0 MB in the beginning and 281.4 MB in the end (delta: -46.4 MB). Peak memory consumption was 142.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:05,051 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 174.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:24:05,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.33 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 234.4 MB in the beginning and 331.9 MB in the end (delta: -97.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:05,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.11 ms. Allocated memory is still 369.1 MB. Free memory was 331.9 MB in the beginning and 329.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:05,054 INFO L168 Benchmark]: Boogie Preprocessor took 12.55 ms. Allocated memory is still 369.1 MB. Free memory was 329.8 MB in the beginning and 328.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:05,056 INFO L168 Benchmark]: RCFGBuilder took 275.01 ms. Allocated memory is still 369.1 MB. Free memory was 328.6 MB in the beginning and 344.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:05,058 INFO L168 Benchmark]: TraceAbstraction took 3348.12 ms. Allocated memory was 369.1 MB in the beginning and 444.6 MB in the end (delta: 75.5 MB). Free memory was 344.9 MB in the beginning and 281.4 MB in the end (delta: 63.5 MB). Peak memory consumption was 139.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:05,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 174.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 345.33 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 234.4 MB in the beginning and 331.9 MB in the end (delta: -97.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.11 ms. Allocated memory is still 369.1 MB. Free memory was 331.9 MB in the beginning and 329.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.55 ms. Allocated memory is still 369.1 MB. Free memory was 329.8 MB in the beginning and 328.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 275.01 ms. Allocated memory is still 369.1 MB. Free memory was 328.6 MB in the beginning and 344.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3348.12 ms. Allocated memory was 369.1 MB in the beginning and 444.6 MB in the end (delta: 75.5 MB). Free memory was 344.9 MB in the beginning and 281.4 MB in the end (delta: 63.5 MB). Peak memory consumption was 139.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1967.4ms, 68 PlacesBefore, 27 PlacesAfterwards, 59 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1773 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 887, positive: 797, positive conditional: 0, positive unconditional: 797, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 585, positive: 550, positive conditional: 0, positive unconditional: 550, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 585, positive: 540, positive conditional: 0, positive unconditional: 540, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 151, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 117, negative conditional: 0, negative unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 887, positive: 247, positive conditional: 0, positive unconditional: 247, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 585, unknown conditional: 0, unknown unconditional: 585] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3267.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 579.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2012.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56 SDtfs, 44 SDslu, 40 SDs, 0 SdLazy, 159 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 146.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=348occurred in iteration=9, InterpolantAutomatonStates: 52, 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: 17.2ms SsaConstructionTime, 142.6ms SatisfiabilityAnalysisTime, 372.2ms InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...