/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:11:15,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:11:15,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:11:15,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:11:15,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:11:15,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:11:15,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:11:15,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:11:15,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:11:15,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:11:15,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:11:15,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:11:15,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:11:15,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:11:15,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:11:15,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:11:15,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:11:15,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:11:15,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:11:15,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:11:15,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:11:15,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:11:15,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:11:15,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:11:15,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:11:15,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:11:15,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:11:15,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:11:15,114 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-RepeatedVariableLbe.epf [2021-03-25 05:11:15,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:11:15,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:11:15,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:11:15,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:11:15,146 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:11:15,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:11:15,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:11:15,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:11:15,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:11:15,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:11:15,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:11:15,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:11:15,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:11:15,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:11:15,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:11:15,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:11:15,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:11:15,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:11:15,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:11:15,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:11:15,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:11:15,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:11:15,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:11:15,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:11:15,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:11:15,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:11:15,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:11:15,148 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:11:15,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:11:15,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:11:15,149 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:11:15,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:11:15,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:11:15,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:11:15,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:11:15,429 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:11:15,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2021-03-25 05:11:15,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18bad2784/9a91cf1b605341cf802eaf513c79d8f6/FLAG82df73529 [2021-03-25 05:11:15,946 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:11:15,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2021-03-25 05:11:15,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18bad2784/9a91cf1b605341cf802eaf513c79d8f6/FLAG82df73529 [2021-03-25 05:11:16,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18bad2784/9a91cf1b605341cf802eaf513c79d8f6 [2021-03-25 05:11:16,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:11:16,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:11:16,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:11:16,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:11:16,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:11:16,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713ae5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16, skipping insertion in model container [2021-03-25 05:11:16,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:11:16,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:11:16,473 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/safe033_tso.oepc.i[950,963] [2021-03-25 05:11:16,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:11:16,626 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:11:16,635 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/safe033_tso.oepc.i[950,963] [2021-03-25 05:11:16,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:11:16,721 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:11:16,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16 WrapperNode [2021-03-25 05:11:16,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:11:16,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:11:16,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:11:16,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:11:16,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:11:16,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:11:16,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:11:16,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:11:16,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (1/1) ... [2021-03-25 05:11:16,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:11:16,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:11:16,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:11:16,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:11:16,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (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 [2021-03-25 05:11:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:11:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:11:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:11:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:11:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:11:16,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:11:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:11:16,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:11:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:11:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:11:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:11:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:11:16,841 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:11:17,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:11:17,071 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:11:17,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:11:17 BoogieIcfgContainer [2021-03-25 05:11:17,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:11:17,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:11:17,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:11:17,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:11:17,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:11:16" (1/3) ... [2021-03-25 05:11:17,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45afd7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:11:17, skipping insertion in model container [2021-03-25 05:11:17,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:16" (2/3) ... [2021-03-25 05:11:17,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45afd7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:11:17, skipping insertion in model container [2021-03-25 05:11:17,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:11:17" (3/3) ... [2021-03-25 05:11:17,077 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.oepc.i [2021-03-25 05:11:17,080 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:11:17,085 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:11:17,085 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:11:17,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,100 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,100 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,100 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,100 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,103 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,103 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:17,108 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:11:17,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 05:11:17,137 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:11:17,138 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:11:17,138 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:11:17,138 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:11:17,138 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:11:17,138 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:11:17,138 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:11:17,138 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:11:17,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-03-25 05:11:17,188 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-03-25 05:11:17,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:17,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-25 05:11:17,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 60 transitions, 130 flow [2021-03-25 05:11:17,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 48 transitions, 102 flow [2021-03-25 05:11:17,200 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:17,206 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-25 05:11:17,214 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-25 05:11:17,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 48 transitions, 102 flow [2021-03-25 05:11:17,230 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-25 05:11:17,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:17,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-25 05:11:17,233 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-25 05:11:18,056 INFO L154 LiptonReduction]: Checked pairs total: 532 [2021-03-25 05:11:18,057 INFO L156 LiptonReduction]: Total number of compositions: 32 [2021-03-25 05:11:18,058 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 858 [2021-03-25 05:11:18,068 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 05:11:18,068 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:18,068 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:18,069 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:18,069 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1129834663, now seen corresponding path program 1 times [2021-03-25 05:11:18,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:18,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20300684] [2021-03-25 05:11:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:18,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:18,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:18,250 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-03-25 05:11:18,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:18,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:18,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 05:11:18,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:18,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:11:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:18,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20300684] [2021-03-25 05:11:18,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:18,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:11:18,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795154543] [2021-03-25 05:11:18,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:11:18,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:18,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:11:18,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:11:18,279 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 92 [2021-03-25 05:11:18,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 38 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 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) [2021-03-25 05:11:18,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:18,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 92 [2021-03-25 05:11:18,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:18,341 INFO L129 PetriNetUnfolder]: 27/75 cut-off events. [2021-03-25 05:11:18,341 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:18,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 75 events. 27/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 243 event pairs, 0 based on Foata normal form. 7/82 useless extension candidates. Maximal degree in co-relation 134. Up to 26 conditions per place. [2021-03-25 05:11:18,343 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 11 selfloop transitions, 12 changer transitions 0/31 dead transitions. [2021-03-25 05:11:18,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 114 flow [2021-03-25 05:11:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:11:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:11:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2021-03-25 05:11:18,356 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7753623188405797 [2021-03-25 05:11:18,359 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2021-03-25 05:11:18,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2021-03-25 05:11:18,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:18,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2021-03-25 05:11:18,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 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) [2021-03-25 05:11:18,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2021-03-25 05:11:18,376 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2021-03-25 05:11:18,377 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 38 flow. Second operand 6 states and 428 transitions. [2021-03-25 05:11:18,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 114 flow [2021-03-25 05:11:18,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:11:18,381 INFO L241 Difference]: Finished difference. Result has 30 places, 24 transitions, 109 flow [2021-03-25 05:11:18,382 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2021-03-25 05:11:18,383 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2021-03-25 05:11:18,383 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:18,383 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 24 transitions, 109 flow [2021-03-25 05:11:18,383 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 24 transitions, 109 flow [2021-03-25 05:11:18,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 24 transitions, 109 flow [2021-03-25 05:11:18,393 INFO L129 PetriNetUnfolder]: 8/39 cut-off events. [2021-03-25 05:11:18,393 INFO L130 PetriNetUnfolder]: For 27/30 co-relation queries the response was YES. [2021-03-25 05:11:18,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 39 events. 8/39 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 88 event pairs, 1 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 91. Up to 18 conditions per place. [2021-03-25 05:11:18,394 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-25 05:11:18,698 INFO L154 LiptonReduction]: Checked pairs total: 185 [2021-03-25 05:11:18,698 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:11:18,699 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 316 [2021-03-25 05:11:18,700 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 101 flow [2021-03-25 05:11:18,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 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) [2021-03-25 05:11:18,700 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:18,700 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:18,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:11:18,700 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:18,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:18,702 INFO L82 PathProgramCache]: Analyzing trace with hash -665838814, now seen corresponding path program 1 times [2021-03-25 05:11:18,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:18,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146208613] [2021-03-25 05:11:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:18,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:18,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:18,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:18,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:18,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:18,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:18,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:18,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:18,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146208613] [2021-03-25 05:11:18,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:18,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:11:18,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619239052] [2021-03-25 05:11:18,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:18,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:18,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:18,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2021-03-25 05:11:18,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2021-03-25 05:11:18,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:18,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2021-03-25 05:11:18,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:18,793 INFO L129 PetriNetUnfolder]: 10/43 cut-off events. [2021-03-25 05:11:18,794 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2021-03-25 05:11:18,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 43 events. 10/43 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 3 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 124. Up to 25 conditions per place. [2021-03-25 05:11:18,794 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 3 selfloop transitions, 4 changer transitions 2/21 dead transitions. [2021-03-25 05:11:18,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 117 flow [2021-03-25 05:11:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:11:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:11:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2021-03-25 05:11:18,795 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2021-03-25 05:11:18,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2021-03-25 05:11:18,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2021-03-25 05:11:18,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:18,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2021-03-25 05:11:18,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2021-03-25 05:11:18,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2021-03-25 05:11:18,797 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2021-03-25 05:11:18,797 INFO L185 Difference]: Start difference. First operand has 27 places, 21 transitions, 101 flow. Second operand 3 states and 220 transitions. [2021-03-25 05:11:18,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 117 flow [2021-03-25 05:11:18,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 110 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 05:11:18,798 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 96 flow [2021-03-25 05:11:18,799 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2021-03-25 05:11:18,799 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2021-03-25 05:11:18,799 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:18,799 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 96 flow [2021-03-25 05:11:18,800 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 96 flow [2021-03-25 05:11:18,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 96 flow [2021-03-25 05:11:18,808 INFO L129 PetriNetUnfolder]: 4/32 cut-off events. [2021-03-25 05:11:18,809 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-25 05:11:18,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 32 events. 4/32 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 1 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 79. Up to 13 conditions per place. [2021-03-25 05:11:18,809 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 05:11:18,944 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-03-25 05:11:19,138 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-03-25 05:11:19,191 INFO L154 LiptonReduction]: Checked pairs total: 80 [2021-03-25 05:11:19,191 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:11:19,191 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 392 [2021-03-25 05:11:19,191 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 95 flow [2021-03-25 05:11:19,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2021-03-25 05:11:19,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:19,192 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:19,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:11:19,192 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:19,192 INFO L82 PathProgramCache]: Analyzing trace with hash 948326858, now seen corresponding path program 1 times [2021-03-25 05:11:19,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:19,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799616136] [2021-03-25 05:11:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:19,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:19,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:19,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:19,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:19,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:19,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:19,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:19,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:19,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799616136] [2021-03-25 05:11:19,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:19,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:11:19,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34653352] [2021-03-25 05:11:19,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:19,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:19,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:19,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:19,228 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-03-25 05:11:19,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2021-03-25 05:11:19,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:19,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-03-25 05:11:19,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:19,243 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-25 05:11:19,243 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-25 05:11:19,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 23 events. 2/23 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 65. Up to 7 conditions per place. [2021-03-25 05:11:19,244 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 1 selfloop transitions, 6 changer transitions 2/18 dead transitions. [2021-03-25 05:11:19,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 18 transitions, 109 flow [2021-03-25 05:11:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:11:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:11:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2021-03-25 05:11:19,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8144329896907216 [2021-03-25 05:11:19,248 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2021-03-25 05:11:19,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2021-03-25 05:11:19,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:19,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2021-03-25 05:11:19,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2021-03-25 05:11:19,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2021-03-25 05:11:19,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2021-03-25 05:11:19,250 INFO L185 Difference]: Start difference. First operand has 28 places, 18 transitions, 95 flow. Second operand 4 states and 316 transitions. [2021-03-25 05:11:19,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 18 transitions, 109 flow [2021-03-25 05:11:19,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 95 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 05:11:19,251 INFO L241 Difference]: Finished difference. Result has 30 places, 16 transitions, 90 flow [2021-03-25 05:11:19,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2021-03-25 05:11:19,251 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2021-03-25 05:11:19,251 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:19,251 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 16 transitions, 90 flow [2021-03-25 05:11:19,251 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 16 transitions, 90 flow [2021-03-25 05:11:19,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 16 transitions, 90 flow [2021-03-25 05:11:19,253 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-25 05:11:19,253 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-25 05:11:19,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 17 events. 2/17 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 43. Up to 5 conditions per place. [2021-03-25 05:11:19,254 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 05:11:19,439 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 05:11:19,439 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 05:11:19,440 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 189 [2021-03-25 05:11:19,440 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 14 transitions, 88 flow [2021-03-25 05:11:19,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2021-03-25 05:11:19,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:19,440 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:19,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:11:19,441 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:19,441 INFO L82 PathProgramCache]: Analyzing trace with hash -45533981, now seen corresponding path program 1 times [2021-03-25 05:11:19,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:19,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736060220] [2021-03-25 05:11:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:19,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:19,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:19,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:19,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:19,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:19,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:19,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736060220] [2021-03-25 05:11:19,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:19,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:11:19,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274208428] [2021-03-25 05:11:19,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:19,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:19,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:19,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:19,479 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2021-03-25 05:11:19,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 14 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-03-25 05:11:19,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:19,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2021-03-25 05:11:19,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:19,496 INFO L129 PetriNetUnfolder]: 2/14 cut-off events. [2021-03-25 05:11:19,497 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-25 05:11:19,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 14 events. 2/14 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 14 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 46. Up to 6 conditions per place. [2021-03-25 05:11:19,497 INFO L132 encePairwiseOnDemand]: 97/103 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-25 05:11:19,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 13 transitions, 92 flow [2021-03-25 05:11:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:11:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:11:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2021-03-25 05:11:19,498 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7645631067961165 [2021-03-25 05:11:19,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2021-03-25 05:11:19,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2021-03-25 05:11:19,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:19,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2021-03-25 05:11:19,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2021-03-25 05:11:19,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2021-03-25 05:11:19,500 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2021-03-25 05:11:19,500 INFO L185 Difference]: Start difference. First operand has 28 places, 14 transitions, 88 flow. Second operand 4 states and 315 transitions. [2021-03-25 05:11:19,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 13 transitions, 92 flow [2021-03-25 05:11:19,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 50 flow, removed 4 selfloop flow, removed 10 redundant places. [2021-03-25 05:11:19,501 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2021-03-25 05:11:19,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2021-03-25 05:11:19,501 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2021-03-25 05:11:19,501 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:19,501 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 0 transitions, 0 flow [2021-03-25 05:11:19,501 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 0 transitions, 0 flow [2021-03-25 05:11:19,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:11:19,502 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:11:19,502 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:19,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:11:19,503 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:11:19,503 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:11:19,503 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:11:19,503 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 05:11:19,504 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:11:19,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-03-25 05:11:19,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:11:19,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:11:19 BasicIcfg [2021-03-25 05:11:19,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:11:19,507 INFO L168 Benchmark]: Toolchain (without parser) took 3214.85 ms. Allocated memory was 255.9 MB in the beginning and 450.9 MB in the end (delta: 195.0 MB). Free memory was 235.3 MB in the beginning and 344.5 MB in the end (delta: -109.1 MB). Peak memory consumption was 84.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:19,508 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:11:19,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.32 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 234.7 MB in the beginning and 338.1 MB in the end (delta: -103.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:19,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.39 ms. Allocated memory is still 375.4 MB. Free memory was 338.1 MB in the beginning and 336.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:19,509 INFO L168 Benchmark]: Boogie Preprocessor took 13.17 ms. Allocated memory is still 375.4 MB. Free memory was 336.4 MB in the beginning and 335.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:19,509 INFO L168 Benchmark]: RCFGBuilder took 291.73 ms. Allocated memory is still 375.4 MB. Free memory was 335.2 MB in the beginning and 353.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:19,509 INFO L168 Benchmark]: TraceAbstraction took 2433.46 ms. Allocated memory was 375.4 MB in the beginning and 450.9 MB in the end (delta: 75.5 MB). Free memory was 353.4 MB in the beginning and 344.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:19,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 430.32 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 234.7 MB in the beginning and 338.1 MB in the end (delta: -103.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.39 ms. Allocated memory is still 375.4 MB. Free memory was 338.1 MB in the beginning and 336.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.17 ms. Allocated memory is still 375.4 MB. Free memory was 336.4 MB in the beginning and 335.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 291.73 ms. Allocated memory is still 375.4 MB. Free memory was 335.2 MB in the beginning and 353.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2433.46 ms. Allocated memory was 375.4 MB in the beginning and 450.9 MB in the end (delta: 75.5 MB). Free memory was 353.4 MB in the beginning and 344.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 842.6ms, 54 PlacesBefore, 23 PlacesAfterwards, 48 TransitionsBefore, 16 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 532 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 312, positive: 286, positive conditional: 0, positive unconditional: 286, 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: 221, positive: 207, positive conditional: 0, positive unconditional: 207, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 221, positive: 207, positive conditional: 0, positive unconditional: 207, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 312, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 221, unknown conditional: 0, unknown unconditional: 221] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 315.1ms, 30 PlacesBefore, 27 PlacesAfterwards, 24 TransitionsBefore, 21 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 185 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 141, positive: 119, positive conditional: 0, positive unconditional: 119, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 141, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 390.7ms, 29 PlacesBefore, 28 PlacesAfterwards, 19 TransitionsBefore, 18 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 80 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 44, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 188.0ms, 30 PlacesBefore, 28 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 4 FixpointIterations, 4 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0ms, 20 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2369.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 178.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 924.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 14 SDslu, 7 SDs, 0 SdLazy, 49 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=1, InterpolantAutomatonStates: 17, 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: 6.4ms SsaConstructionTime, 93.7ms SatisfiabilityAnalysisTime, 156.8ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...