/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/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:51:09,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:51:09,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:51:09,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:51:09,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:51:09,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:51:09,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:51:09,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:51:09,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:51:09,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:51:09,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:51:09,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:51:09,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:51:09,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:51:09,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:51:09,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:51:09,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:51:09,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:51:09,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:51:09,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:51:09,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:51:09,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:51:09,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:51:09,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:51:09,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:51:09,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:51:09,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:51:09,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:51:09,152 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 [2021-03-24 19:51:09,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:51:09,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:51:09,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:51:09,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:51:09,181 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:51:09,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:51:09,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:51:09,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:51:09,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:51:09,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:51:09,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:51:09,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:51:09,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:51:09,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:51:09,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:51:09,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:51:09,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:51:09,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:51:09,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:51:09,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:51:09,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:51:09,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:51:09,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:51:09,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:51:09,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:51:09,483 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:51:09,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-03-24 19:51:09,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4b8db22/4cb2c30b923340a48d6ac4840e6e6613/FLAG4df61eaba [2021-03-24 19:51:09,930 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:51:09,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-03-24 19:51:09,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4b8db22/4cb2c30b923340a48d6ac4840e6e6613/FLAG4df61eaba [2021-03-24 19:51:10,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4b8db22/4cb2c30b923340a48d6ac4840e6e6613 [2021-03-24 19:51:10,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:51:10,270 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:51:10,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:51:10,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:51:10,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:51:10,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ec12ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10, skipping insertion in model container [2021-03-24 19:51:10,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:51:10,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:51:10,427 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/safe009_tso.oepc.i[950,963] [2021-03-24 19:51:10,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:51:10,570 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:51:10,577 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/safe009_tso.oepc.i[950,963] [2021-03-24 19:51:10,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:51:10,683 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:51:10,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10 WrapperNode [2021-03-24 19:51:10,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:51:10,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:51:10,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:51:10,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:51:10,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:51:10,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:51:10,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:51:10,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:51:10,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... [2021-03-24 19:51:10,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:51:10,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:51:10,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:51:10,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:51:10,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:51:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:51:10,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:51:10,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:51:10,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:51:10,824 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:51:11,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:51:11,019 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:51:11,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:51:11 BoogieIcfgContainer [2021-03-24 19:51:11,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:51:11,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:51:11,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:51:11,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:51:11,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:51:10" (1/3) ... [2021-03-24 19:51:11,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f78f2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:51:11, skipping insertion in model container [2021-03-24 19:51:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:10" (2/3) ... [2021-03-24 19:51:11,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f78f2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:51:11, skipping insertion in model container [2021-03-24 19:51:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:51:11" (3/3) ... [2021-03-24 19:51:11,025 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-03-24 19:51:11,028 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:51:11,031 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:51:11,032 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:51:11,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,052 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,052 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,057 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,057 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,061 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:11,064 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:51:11,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:51:11,087 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:51:11,088 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:51:11,088 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:51:11,088 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:51:11,088 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:51:11,088 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:51:11,088 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:51:11,088 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:51:11,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-24 19:51:11,117 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-24 19:51:11,117 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:51:11,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-24 19:51:11,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-24 19:51:11,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-24 19:51:11,123 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:51:11,131 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-24 19:51:11,132 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-24 19:51:11,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-24 19:51:11,143 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-24 19:51:11,143 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:51:11,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-24 19:51:11,145 INFO L142 LiptonReduction]: Number of co-enabled transitions 812 [2021-03-24 19:51:12,292 INFO L154 LiptonReduction]: Checked pairs total: 861 [2021-03-24 19:51:12,292 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-24 19:51:12,294 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1172 [2021-03-24 19:51:12,300 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 19:51:12,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:51:12,300 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:12,301 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:12,301 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:12,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:12,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1640288609, now seen corresponding path program 1 times [2021-03-24 19:51:12,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:12,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041077182] [2021-03-24 19:51:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:12,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:12,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,453 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:51:12,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:51:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:12,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041077182] [2021-03-24 19:51:12,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:12,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:51:12,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906297575] [2021-03-24 19:51:12,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:51:12,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:12,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:51:12,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:51:12,494 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-24 19:51:12,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:12,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-24 19:51:12,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:12,518 INFO L129 PetriNetUnfolder]: 14/63 cut-off events. [2021-03-24 19:51:12,518 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:51:12,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 63 events. 14/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 207 event pairs, 8 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 97. Up to 25 conditions per place. [2021-03-24 19:51:12,520 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 7 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2021-03-24 19:51:12,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 81 flow [2021-03-24 19:51:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:51:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:51:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-24 19:51:12,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8477272727272728 [2021-03-24 19:51:12,529 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-24 19:51:12,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-24 19:51:12,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:12,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-24 19:51:12,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,539 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,540 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 4 states and 373 transitions. [2021-03-24 19:51:12,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 81 flow [2021-03-24 19:51:12,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 78 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:51:12,543 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 76 flow [2021-03-24 19:51:12,545 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2021-03-24 19:51:12,545 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-24 19:51:12,545 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 76 flow [2021-03-24 19:51:12,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:12,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:12,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:51:12,546 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:12,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:12,546 INFO L82 PathProgramCache]: Analyzing trace with hash -690661269, now seen corresponding path program 1 times [2021-03-24 19:51:12,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:12,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736269477] [2021-03-24 19:51:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:12,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:12,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,590 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:51:12,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:51:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:12,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736269477] [2021-03-24 19:51:12,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:12,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:51:12,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233464740] [2021-03-24 19:51:12,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:51:12,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:12,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:51:12,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:51:12,598 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-24 19:51:12,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:12,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-24 19:51:12,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:12,614 INFO L129 PetriNetUnfolder]: 11/62 cut-off events. [2021-03-24 19:51:12,614 INFO L130 PetriNetUnfolder]: For 54/138 co-relation queries the response was YES. [2021-03-24 19:51:12,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 62 events. 11/62 cut-off events. For 54/138 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 207 event pairs, 3 based on Foata normal form. 2/59 useless extension candidates. Maximal degree in co-relation 136. Up to 22 conditions per place. [2021-03-24 19:51:12,614 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 6 selfloop transitions, 7 changer transitions 0/27 dead transitions. [2021-03-24 19:51:12,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 122 flow [2021-03-24 19:51:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:51:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:51:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-03-24 19:51:12,616 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8454545454545455 [2021-03-24 19:51:12,616 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-03-24 19:51:12,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-03-24 19:51:12,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:12,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-03-24 19:51:12,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,619 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,620 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 76 flow. Second operand 4 states and 372 transitions. [2021-03-24 19:51:12,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 122 flow [2021-03-24 19:51:12,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:51:12,621 INFO L241 Difference]: Finished difference. Result has 38 places, 25 transitions, 110 flow [2021-03-24 19:51:12,621 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2021-03-24 19:51:12,621 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-24 19:51:12,621 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 110 flow [2021-03-24 19:51:12,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,622 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:12,622 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:12,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:51:12,622 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:12,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:12,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2052642820, now seen corresponding path program 1 times [2021-03-24 19:51:12,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:12,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457537194] [2021-03-24 19:51:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:12,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:12,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:12,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457537194] [2021-03-24 19:51:12,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:12,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:51:12,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591359082] [2021-03-24 19:51:12,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:51:12,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:12,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:51:12,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:51:12,663 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2021-03-24 19:51:12,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:12,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2021-03-24 19:51:12,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:12,691 INFO L129 PetriNetUnfolder]: 6/63 cut-off events. [2021-03-24 19:51:12,691 INFO L130 PetriNetUnfolder]: For 133/180 co-relation queries the response was YES. [2021-03-24 19:51:12,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 63 events. 6/63 cut-off events. For 133/180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 236 event pairs, 3 based on Foata normal form. 5/66 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2021-03-24 19:51:12,692 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 2 selfloop transitions, 4 changer transitions 3/26 dead transitions. [2021-03-24 19:51:12,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 26 transitions, 127 flow [2021-03-24 19:51:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:51:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:51:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2021-03-24 19:51:12,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8727272727272727 [2021-03-24 19:51:12,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2021-03-24 19:51:12,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2021-03-24 19:51:12,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:12,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2021-03-24 19:51:12,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,696 INFO L185 Difference]: Start difference. First operand has 38 places, 25 transitions, 110 flow. Second operand 4 states and 384 transitions. [2021-03-24 19:51:12,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 26 transitions, 127 flow [2021-03-24 19:51:12,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:51:12,698 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 105 flow [2021-03-24 19:51:12,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2021-03-24 19:51:12,698 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-24 19:51:12,698 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 105 flow [2021-03-24 19:51:12,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,698 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:12,699 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:12,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:51:12,699 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:12,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:12,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1767243308, now seen corresponding path program 1 times [2021-03-24 19:51:12,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:12,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145075608] [2021-03-24 19:51:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:12,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:12,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:12,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145075608] [2021-03-24 19:51:12,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:12,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:51:12,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150562803] [2021-03-24 19:51:12,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:51:12,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:51:12,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:51:12,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 110 [2021-03-24 19:51:12,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:12,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 110 [2021-03-24 19:51:12,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:12,751 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-24 19:51:12,751 INFO L130 PetriNetUnfolder]: For 129/181 co-relation queries the response was YES. [2021-03-24 19:51:12,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 48 events. 0/48 cut-off events. For 129/181 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 167 event pairs, 0 based on Foata normal form. 5/50 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-24 19:51:12,751 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 2 selfloop transitions, 4 changer transitions 5/26 dead transitions. [2021-03-24 19:51:12,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 148 flow [2021-03-24 19:51:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:51:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:51:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2021-03-24 19:51:12,753 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8727272727272727 [2021-03-24 19:51:12,753 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2021-03-24 19:51:12,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2021-03-24 19:51:12,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:12,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2021-03-24 19:51:12,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,755 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,755 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 105 flow. Second operand 4 states and 384 transitions. [2021-03-24 19:51:12,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 148 flow [2021-03-24 19:51:12,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 26 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 19:51:12,756 INFO L241 Difference]: Finished difference. Result has 42 places, 21 transitions, 104 flow [2021-03-24 19:51:12,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=42, PETRI_TRANSITIONS=21} [2021-03-24 19:51:12,757 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2021-03-24 19:51:12,757 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 21 transitions, 104 flow [2021-03-24 19:51:12,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,757 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:12,757 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:12,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:51:12,757 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:12,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:12,758 INFO L82 PathProgramCache]: Analyzing trace with hash -765532703, now seen corresponding path program 1 times [2021-03-24 19:51:12,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:12,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8400199] [2021-03-24 19:51:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:12,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,786 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-24 19:51:12,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 19:51:12,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:12,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8400199] [2021-03-24 19:51:12,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:12,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:51:12,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225702105] [2021-03-24 19:51:12,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:51:12,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:12,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:51:12,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:51:12,799 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:51:12,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 21 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:12,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:51:12,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:12,845 INFO L129 PetriNetUnfolder]: 51/118 cut-off events. [2021-03-24 19:51:12,845 INFO L130 PetriNetUnfolder]: For 102/105 co-relation queries the response was YES. [2021-03-24 19:51:12,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 118 events. 51/118 cut-off events. For 102/105 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 414 event pairs, 15 based on Foata normal form. 8/115 useless extension candidates. Maximal degree in co-relation 257. Up to 54 conditions per place. [2021-03-24 19:51:12,846 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 7 selfloop transitions, 5 changer transitions 11/36 dead transitions. [2021-03-24 19:51:12,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 180 flow [2021-03-24 19:51:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:51:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:51:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-24 19:51:12,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.787012987012987 [2021-03-24 19:51:12,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-24 19:51:12,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-24 19:51:12,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:12,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-24 19:51:12,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,851 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,851 INFO L185 Difference]: Start difference. First operand has 42 places, 21 transitions, 104 flow. Second operand 7 states and 606 transitions. [2021-03-24 19:51:12,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 180 flow [2021-03-24 19:51:12,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 146 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-24 19:51:12,852 INFO L241 Difference]: Finished difference. Result has 44 places, 23 transitions, 110 flow [2021-03-24 19:51:12,853 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=110, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2021-03-24 19:51:12,853 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-24 19:51:12,853 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 110 flow [2021-03-24 19:51:12,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,853 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:12,853 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:12,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:51:12,853 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:12,854 INFO L82 PathProgramCache]: Analyzing trace with hash -932854879, now seen corresponding path program 1 times [2021-03-24 19:51:12,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:12,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620228488] [2021-03-24 19:51:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:12,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,879 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:51:12,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:51:12,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:12,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:12,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:12,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620228488] [2021-03-24 19:51:12,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:12,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:51:12,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125509084] [2021-03-24 19:51:12,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:51:12,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:12,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:51:12,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:51:12,892 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:51:12,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:12,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:51:12,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:12,955 INFO L129 PetriNetUnfolder]: 22/69 cut-off events. [2021-03-24 19:51:12,956 INFO L130 PetriNetUnfolder]: For 80/114 co-relation queries the response was YES. [2021-03-24 19:51:12,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 69 events. 22/69 cut-off events. For 80/114 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 181 event pairs, 0 based on Foata normal form. 9/74 useless extension candidates. Maximal degree in co-relation 238. Up to 44 conditions per place. [2021-03-24 19:51:12,956 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 3 selfloop transitions, 7 changer transitions 15/38 dead transitions. [2021-03-24 19:51:12,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 249 flow [2021-03-24 19:51:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:51:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:51:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 691 transitions. [2021-03-24 19:51:12,959 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7852272727272728 [2021-03-24 19:51:12,959 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 691 transitions. [2021-03-24 19:51:12,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 691 transitions. [2021-03-24 19:51:12,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:12,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 691 transitions. [2021-03-24 19:51:12,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.375) internal successors, (691), 8 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,962 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,962 INFO L185 Difference]: Start difference. First operand has 44 places, 23 transitions, 110 flow. Second operand 8 states and 691 transitions. [2021-03-24 19:51:12,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 249 flow [2021-03-24 19:51:12,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 229 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-24 19:51:12,966 INFO L241 Difference]: Finished difference. Result has 48 places, 23 transitions, 130 flow [2021-03-24 19:51:12,966 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=48, PETRI_TRANSITIONS=23} [2021-03-24 19:51:12,966 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-24 19:51:12,967 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 23 transitions, 130 flow [2021-03-24 19:51:12,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:12,967 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:12,967 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:12,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:51:12,967 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:12,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash -688386718, now seen corresponding path program 1 times [2021-03-24 19:51:12,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:12,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931885369] [2021-03-24 19:51:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:13,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:13,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:13,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:13,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:13,019 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:51:13,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:51:13,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:13,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:13,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:13,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:13,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:13,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:13,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931885369] [2021-03-24 19:51:13,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:13,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:51:13,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711190765] [2021-03-24 19:51:13,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:51:13,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:13,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:51:13,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:51:13,037 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:51:13,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 23 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:13,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:13,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:51:13,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:13,115 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-03-24 19:51:13,115 INFO L130 PetriNetUnfolder]: For 69/84 co-relation queries the response was YES. [2021-03-24 19:51:13,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 27 events. 2/27 cut-off events. For 69/84 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 6/33 useless extension candidates. Maximal degree in co-relation 95. Up to 11 conditions per place. [2021-03-24 19:51:13,115 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 19:51:13,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 26 transitions, 181 flow [2021-03-24 19:51:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:51:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:51:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 763 transitions. [2021-03-24 19:51:13,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7707070707070707 [2021-03-24 19:51:13,118 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 763 transitions. [2021-03-24 19:51:13,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 763 transitions. [2021-03-24 19:51:13,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:13,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 763 transitions. [2021-03-24 19:51:13,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.77777777777777) internal successors, (763), 9 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:13,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:13,122 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:13,122 INFO L185 Difference]: Start difference. First operand has 48 places, 23 transitions, 130 flow. Second operand 9 states and 763 transitions. [2021-03-24 19:51:13,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 26 transitions, 181 flow [2021-03-24 19:51:13,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 26 transitions, 136 flow, removed 12 selfloop flow, removed 10 redundant places. [2021-03-24 19:51:13,125 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-03-24 19:51:13,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-03-24 19:51:13,125 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-24 19:51:13,125 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2021-03-24 19:51:13,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:13,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:51:13,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:51:13 BasicIcfg [2021-03-24 19:51:13,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:51:13,129 INFO L168 Benchmark]: Toolchain (without parser) took 2858.94 ms. Allocated memory was 369.1 MB in the beginning and 446.7 MB in the end (delta: 77.6 MB). Free memory was 332.2 MB in the beginning and 420.7 MB in the end (delta: -88.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:51:13,130 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 369.1 MB. Free memory was 350.6 MB in the beginning and 350.5 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:51:13,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.51 ms. Allocated memory is still 369.1 MB. Free memory was 332.1 MB in the beginning and 332.0 MB in the end (delta: 47.3 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-24 19:51:13,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.29 ms. Allocated memory is still 369.1 MB. Free memory was 332.0 MB in the beginning and 329.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:51:13,135 INFO L168 Benchmark]: Boogie Preprocessor took 12.11 ms. Allocated memory is still 369.1 MB. Free memory was 329.9 MB in the beginning and 328.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:51:13,135 INFO L168 Benchmark]: RCFGBuilder took 263.08 ms. Allocated memory is still 369.1 MB. Free memory was 328.9 MB in the beginning and 304.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:51:13,135 INFO L168 Benchmark]: TraceAbstraction took 2106.94 ms. Allocated memory was 369.1 MB in the beginning and 446.7 MB in the end (delta: 77.6 MB). Free memory was 304.8 MB in the beginning and 420.7 MB in the end (delta: -115.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:51:13,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 369.1 MB. Free memory was 350.6 MB in the beginning and 350.5 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 412.51 ms. Allocated memory is still 369.1 MB. Free memory was 332.1 MB in the beginning and 332.0 MB in the end (delta: 47.3 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 60.29 ms. Allocated memory is still 369.1 MB. Free memory was 332.0 MB in the beginning and 329.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.11 ms. Allocated memory is still 369.1 MB. Free memory was 329.9 MB in the beginning and 328.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 263.08 ms. Allocated memory is still 369.1 MB. Free memory was 328.9 MB in the beginning and 304.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2106.94 ms. Allocated memory was 369.1 MB in the beginning and 446.7 MB in the end (delta: 77.6 MB). Free memory was 304.8 MB in the beginning and 420.7 MB in the end (delta: -115.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1159.9ms, 67 PlacesBefore, 31 PlacesAfterwards, 58 TransitionsBefore, 21 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 861 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 586, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 485, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 485, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 485, positive: 461, positive conditional: 0, positive unconditional: 461, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 68, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 586, positive: 95, positive conditional: 0, positive unconditional: 95, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 485, unknown conditional: 0, unknown unconditional: 485] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2040.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 356.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1209.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 39 SDslu, 38 SDs, 0 SdLazy, 114 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 144.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=6, InterpolantAutomatonStates: 40, 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: 11.2ms SsaConstructionTime, 74.3ms SatisfiabilityAnalysisTime, 279.6ms InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...