/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:05:26,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:05:26,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:05:26,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:05:26,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:05:26,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:05:26,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:05:26,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:05:26,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:05:26,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:05:26,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:05:26,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:05:27,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:05:27,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:05:27,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:05:27,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:05:27,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:05:27,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:05:27,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:05:27,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:05:27,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:05:27,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:05:27,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:05:27,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:05:27,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:05:27,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:05:27,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:05:27,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:05:27,039 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-VariableLbe.epf [2021-03-24 11:05:27,075 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:05:27,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:05:27,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:05:27,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:05:27,079 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:05:27,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:05:27,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:05:27,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:05:27,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:05:27,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:05:27,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:05:27,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:05:27,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:05:27,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:05:27,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:05:27,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:05:27,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:05:27,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:05:27,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:05:27,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:05:27,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:05:27,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:05:27,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:05:27,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:05:27,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:05:27,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:05:27,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:05:27,083 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:05:27,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:05:27,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:05:27,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:05:27,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:05:27,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:05:27,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:05:27,391 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:05:27,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-03-24 11:05:27,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61e1a3f5d/fadb38d327a6472bbdd9750dd6318fc6/FLAG51b6d266d [2021-03-24 11:05:27,966 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:05:27,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-03-24 11:05:27,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61e1a3f5d/fadb38d327a6472bbdd9750dd6318fc6/FLAG51b6d266d [2021-03-24 11:05:28,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61e1a3f5d/fadb38d327a6472bbdd9750dd6318fc6 [2021-03-24 11:05:28,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:05:28,281 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:05:28,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:05:28,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:05:28,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:05:28,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b83a7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28, skipping insertion in model container [2021-03-24 11:05:28,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:05:28,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:05:28,484 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/safe023_tso.oepc.i[950,963] [2021-03-24 11:05:28,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:05:28,593 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:05:28,602 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/safe023_tso.oepc.i[950,963] [2021-03-24 11:05:28,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:05:28,695 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:05:28,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28 WrapperNode [2021-03-24 11:05:28,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:05:28,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:05:28,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:05:28,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:05:28,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:05:28,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:05:28,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:05:28,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:05:28,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (1/1) ... [2021-03-24 11:05:28,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:05:28,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:05:28,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:05:28,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:05:28,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (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 11:05:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:05:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:05:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:05:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:05:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:05:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:05:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:05:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:05:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:05:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:05:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:05:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:05:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:05:28,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:05:28,817 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 11:05:29,126 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:05:29,127 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:05:29,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:05:29 BoogieIcfgContainer [2021-03-24 11:05:29,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:05:29,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:05:29,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:05:29,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:05:29,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:05:28" (1/3) ... [2021-03-24 11:05:29,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b4464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:05:29, skipping insertion in model container [2021-03-24 11:05:29,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:28" (2/3) ... [2021-03-24 11:05:29,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b4464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:05:29, skipping insertion in model container [2021-03-24 11:05:29,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:05:29" (3/3) ... [2021-03-24 11:05:29,134 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2021-03-24 11:05:29,142 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:05:29,146 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:05:29,146 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:05:29,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,174 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,174 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,174 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,176 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,176 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,177 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,177 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,178 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,178 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,187 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:29,198 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:05:29,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 11:05:29,237 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:05:29,237 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:05:29,237 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:05:29,237 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:05:29,237 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:05:29,237 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:05:29,237 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:05:29,237 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:05:29,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 11:05:29,278 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 11:05:29,278 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:05:29,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 11:05:29,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 11:05:29,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 11:05:29,286 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:05:29,294 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 11:05:29,296 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 11:05:29,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 11:05:29,312 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 11:05:29,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:05:29,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 11:05:29,315 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 11:05:30,673 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-24 11:05:30,673 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-24 11:05:30,675 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1390 [2021-03-24 11:05:30,683 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 11:05:30,683 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:05:30,684 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:05:30,684 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:05:30,684 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:05:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:05:30,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1013680624, now seen corresponding path program 1 times [2021-03-24 11:05:30,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:05:30,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244251963] [2021-03-24 11:05:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:05:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:05:30,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:30,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:30,912 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:05:30,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:05:30,921 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 11:05:30,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244251963] [2021-03-24 11:05:30,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:05:30,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:05:30,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664233203] [2021-03-24 11:05:30,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:05:30,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:05:30,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:05:30,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:05:30,942 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2021-03-24 11:05:30,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 11:05:30,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:05:30,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2021-03-24 11:05:30,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:05:30,984 INFO L129 PetriNetUnfolder]: 39/126 cut-off events. [2021-03-24 11:05:30,984 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:05:30,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 126 events. 39/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 488 event pairs, 5 based on Foata normal form. 6/123 useless extension candidates. Maximal degree in co-relation 207. Up to 44 conditions per place. [2021-03-24 11:05:30,986 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 9 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2021-03-24 11:05:30,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 97 flow [2021-03-24 11:05:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:05:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:05:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2021-03-24 11:05:30,997 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8075221238938053 [2021-03-24 11:05:30,998 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2021-03-24 11:05:30,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2021-03-24 11:05:31,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:05:31,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2021-03-24 11:05:31,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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 11:05:31,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 11:05:31,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 11:05:31,011 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 365 transitions. [2021-03-24 11:05:31,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 97 flow [2021-03-24 11:05:31,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:05:31,015 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 94 flow [2021-03-24 11:05:31,017 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-24 11:05:31,017 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-24 11:05:31,017 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 94 flow [2021-03-24 11:05:31,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 11:05:31,018 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:05:31,018 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:05:31,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:05:31,018 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:05:31,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:05:31,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1359328769, now seen corresponding path program 1 times [2021-03-24 11:05:31,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:05:31,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013467537] [2021-03-24 11:05:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:05:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:05:31,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:05:31,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,102 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:05:31,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:05:31,112 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 11:05:31,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013467537] [2021-03-24 11:05:31,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:05:31,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:05:31,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249078840] [2021-03-24 11:05:31,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:05:31,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:05:31,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:05:31,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:05:31,117 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2021-03-24 11:05:31,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 11:05:31,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:05:31,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2021-03-24 11:05:31,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:05:31,158 INFO L129 PetriNetUnfolder]: 34/118 cut-off events. [2021-03-24 11:05:31,158 INFO L130 PetriNetUnfolder]: For 78/252 co-relation queries the response was YES. [2021-03-24 11:05:31,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 118 events. 34/118 cut-off events. For 78/252 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 471 event pairs, 3 based on Foata normal form. 2/112 useless extension candidates. Maximal degree in co-relation 315. Up to 45 conditions per place. [2021-03-24 11:05:31,160 INFO L132 encePairwiseOnDemand]: 105/113 looper letters, 8 selfloop transitions, 14 changer transitions 0/36 dead transitions. [2021-03-24 11:05:31,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 188 flow [2021-03-24 11:05:31,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:05:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:05:31,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2021-03-24 11:05:31,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8097345132743363 [2021-03-24 11:05:31,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 366 transitions. [2021-03-24 11:05:31,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 366 transitions. [2021-03-24 11:05:31,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:05:31,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 366 transitions. [2021-03-24 11:05:31,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 11:05:31,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 11:05:31,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 11:05:31,165 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 94 flow. Second operand 4 states and 366 transitions. [2021-03-24 11:05:31,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 188 flow [2021-03-24 11:05:31,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:05:31,167 INFO L241 Difference]: Finished difference. Result has 40 places, 35 transitions, 203 flow [2021-03-24 11:05:31,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2021-03-24 11:05:31,168 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-24 11:05:31,168 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 203 flow [2021-03-24 11:05:31,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 11:05:31,168 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:05:31,168 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:05:31,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:05:31,169 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:05:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:05:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash -313183670, now seen corresponding path program 1 times [2021-03-24 11:05:31,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:05:31,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818574140] [2021-03-24 11:05:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:05:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:05:31,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,243 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:05:31,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:05:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:05:31,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818574140] [2021-03-24 11:05:31,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:05:31,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:05:31,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509344324] [2021-03-24 11:05:31,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:05:31,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:05:31,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:05:31,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:05:31,259 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2021-03-24 11:05:31,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:05:31,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:05:31,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2021-03-24 11:05:31,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:05:31,295 INFO L129 PetriNetUnfolder]: 22/90 cut-off events. [2021-03-24 11:05:31,295 INFO L130 PetriNetUnfolder]: For 166/419 co-relation queries the response was YES. [2021-03-24 11:05:31,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 90 events. 22/90 cut-off events. For 166/419 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 339 event pairs, 1 based on Foata normal form. 4/91 useless extension candidates. Maximal degree in co-relation 306. Up to 30 conditions per place. [2021-03-24 11:05:31,298 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 15 selfloop transitions, 8 changer transitions 5/42 dead transitions. [2021-03-24 11:05:31,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 313 flow [2021-03-24 11:05:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:05:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:05:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2021-03-24 11:05:31,300 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8030973451327433 [2021-03-24 11:05:31,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2021-03-24 11:05:31,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2021-03-24 11:05:31,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:05:31,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2021-03-24 11:05:31,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 11:05:31,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 11:05:31,302 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 11:05:31,303 INFO L185 Difference]: Start difference. First operand has 40 places, 35 transitions, 203 flow. Second operand 4 states and 363 transitions. [2021-03-24 11:05:31,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 313 flow [2021-03-24 11:05:31,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 313 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 11:05:31,310 INFO L241 Difference]: Finished difference. Result has 46 places, 35 transitions, 244 flow [2021-03-24 11:05:31,311 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2021-03-24 11:05:31,311 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2021-03-24 11:05:31,316 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 244 flow [2021-03-24 11:05:31,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:05:31,316 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:05:31,316 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:05:31,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:05:31,317 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:05:31,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:05:31,319 INFO L82 PathProgramCache]: Analyzing trace with hash 999985240, now seen corresponding path program 1 times [2021-03-24 11:05:31,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:05:31,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163133655] [2021-03-24 11:05:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:05:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:05:31,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:05:31,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,378 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:05:31,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:05:31,394 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 11:05:31,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163133655] [2021-03-24 11:05:31,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:05:31,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:05:31,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805222768] [2021-03-24 11:05:31,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:05:31,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:05:31,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:05:31,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:05:31,398 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 113 [2021-03-24 11:05:31,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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 11:05:31,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:05:31,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 113 [2021-03-24 11:05:31,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:05:31,461 INFO L129 PetriNetUnfolder]: 36/121 cut-off events. [2021-03-24 11:05:31,462 INFO L130 PetriNetUnfolder]: For 475/838 co-relation queries the response was YES. [2021-03-24 11:05:31,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 121 events. 36/121 cut-off events. For 475/838 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 505 event pairs, 0 based on Foata normal form. 10/129 useless extension candidates. Maximal degree in co-relation 483. Up to 41 conditions per place. [2021-03-24 11:05:31,464 INFO L132 encePairwiseOnDemand]: 104/113 looper letters, 15 selfloop transitions, 16 changer transitions 10/54 dead transitions. [2021-03-24 11:05:31,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 530 flow [2021-03-24 11:05:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:05:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:05:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2021-03-24 11:05:31,466 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7946902654867256 [2021-03-24 11:05:31,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2021-03-24 11:05:31,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2021-03-24 11:05:31,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:05:31,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2021-03-24 11:05:31,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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 11:05:31,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 11:05:31,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 11:05:31,469 INFO L185 Difference]: Start difference. First operand has 46 places, 35 transitions, 244 flow. Second operand 5 states and 449 transitions. [2021-03-24 11:05:31,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 530 flow [2021-03-24 11:05:31,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 513 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 11:05:31,475 INFO L241 Difference]: Finished difference. Result has 52 places, 41 transitions, 380 flow [2021-03-24 11:05:31,475 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2021-03-24 11:05:31,476 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2021-03-24 11:05:31,476 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 380 flow [2021-03-24 11:05:31,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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 11:05:31,476 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:05:31,476 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 11:05:31,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:05:31,476 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:05:31,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:05:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash 934770468, now seen corresponding path program 1 times [2021-03-24 11:05:31,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:05:31,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501244701] [2021-03-24 11:05:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:05:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:05:31,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:05:31,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,537 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:05:31,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:05:31,546 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 11:05:31,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501244701] [2021-03-24 11:05:31,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:05:31,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:05:31,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961999309] [2021-03-24 11:05:31,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:05:31,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:05:31,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:05:31,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:05:31,548 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 113 [2021-03-24 11:05:31,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 380 flow. Second operand has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 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 11:05:31,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:05:31,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 113 [2021-03-24 11:05:31,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:05:31,603 INFO L129 PetriNetUnfolder]: 19/98 cut-off events. [2021-03-24 11:05:31,603 INFO L130 PetriNetUnfolder]: For 540/903 co-relation queries the response was YES. [2021-03-24 11:05:31,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 98 events. 19/98 cut-off events. For 540/903 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 419 event pairs, 0 based on Foata normal form. 9/106 useless extension candidates. Maximal degree in co-relation 445. Up to 35 conditions per place. [2021-03-24 11:05:31,604 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 11 selfloop transitions, 7 changer transitions 16/47 dead transitions. [2021-03-24 11:05:31,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 521 flow [2021-03-24 11:05:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:05:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:05:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2021-03-24 11:05:31,608 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7805309734513274 [2021-03-24 11:05:31,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2021-03-24 11:05:31,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2021-03-24 11:05:31,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:05:31,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2021-03-24 11:05:31,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:05:31,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 11:05:31,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 11:05:31,612 INFO L185 Difference]: Start difference. First operand has 52 places, 41 transitions, 380 flow. Second operand 5 states and 441 transitions. [2021-03-24 11:05:31,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 521 flow [2021-03-24 11:05:31,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 521 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 11:05:31,616 INFO L241 Difference]: Finished difference. Result has 58 places, 30 transitions, 263 flow [2021-03-24 11:05:31,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=58, PETRI_TRANSITIONS=30} [2021-03-24 11:05:31,617 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2021-03-24 11:05:31,617 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 30 transitions, 263 flow [2021-03-24 11:05:31,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 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 11:05:31,617 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:05:31,617 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 11:05:31,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:05:31,617 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:05:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:05:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1551417392, now seen corresponding path program 1 times [2021-03-24 11:05:31,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:05:31,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497805691] [2021-03-24 11:05:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:05:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:05:31,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,671 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-24 11:05:31,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 11:05:31,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:05:31,685 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 11:05:31,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497805691] [2021-03-24 11:05:31,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:05:31,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:05:31,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897455449] [2021-03-24 11:05:31,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:05:31,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:05:31,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:05:31,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:05:31,688 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 11:05:31,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 30 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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 11:05:31,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:05:31,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 11:05:31,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:05:31,765 INFO L129 PetriNetUnfolder]: 70/184 cut-off events. [2021-03-24 11:05:31,765 INFO L130 PetriNetUnfolder]: For 277/286 co-relation queries the response was YES. [2021-03-24 11:05:31,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 184 events. 70/184 cut-off events. For 277/286 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 887 event pairs, 8 based on Foata normal form. 15/182 useless extension candidates. Maximal degree in co-relation 488. Up to 78 conditions per place. [2021-03-24 11:05:31,767 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 10 selfloop transitions, 8 changer transitions 4/45 dead transitions. [2021-03-24 11:05:31,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 45 transitions, 337 flow [2021-03-24 11:05:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 11:05:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 11:05:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2021-03-24 11:05:31,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2021-03-24 11:05:31,769 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 516 transitions. [2021-03-24 11:05:31,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 516 transitions. [2021-03-24 11:05:31,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:05:31,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 516 transitions. [2021-03-24 11:05:31,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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 11:05:31,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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 11:05:31,772 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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 11:05:31,772 INFO L185 Difference]: Start difference. First operand has 58 places, 30 transitions, 263 flow. Second operand 6 states and 516 transitions. [2021-03-24 11:05:31,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 45 transitions, 337 flow [2021-03-24 11:05:31,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 264 flow, removed 10 selfloop flow, removed 10 redundant places. [2021-03-24 11:05:31,776 INFO L241 Difference]: Finished difference. Result has 57 places, 37 transitions, 254 flow [2021-03-24 11:05:31,776 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2021-03-24 11:05:31,776 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2021-03-24 11:05:31,777 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 254 flow [2021-03-24 11:05:31,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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 11:05:31,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:05:31,777 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 11:05:31,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:05:31,777 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:05:31,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:05:31,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1635932436, now seen corresponding path program 1 times [2021-03-24 11:05:31,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:05:31,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370745800] [2021-03-24 11:05:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:05:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:05:31,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,829 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:05:31,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:05:31,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:31,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:31,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:05:31,843 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 11:05:31,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370745800] [2021-03-24 11:05:31,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:05:31,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:05:31,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625376310] [2021-03-24 11:05:31,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:05:31,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:05:31,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:05:31,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:05:31,845 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 11:05:31,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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 11:05:31,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:05:31,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 11:05:31,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:05:31,945 INFO L129 PetriNetUnfolder]: 50/155 cut-off events. [2021-03-24 11:05:31,945 INFO L130 PetriNetUnfolder]: For 284/371 co-relation queries the response was YES. [2021-03-24 11:05:31,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 155 events. 50/155 cut-off events. For 284/371 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 763 event pairs, 0 based on Foata normal form. 20/159 useless extension candidates. Maximal degree in co-relation 583. Up to 71 conditions per place. [2021-03-24 11:05:31,947 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 5 selfloop transitions, 15 changer transitions 10/53 dead transitions. [2021-03-24 11:05:31,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 405 flow [2021-03-24 11:05:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:05:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:05:31,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 686 transitions. [2021-03-24 11:05:31,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7588495575221239 [2021-03-24 11:05:31,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 686 transitions. [2021-03-24 11:05:31,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 686 transitions. [2021-03-24 11:05:31,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:05:31,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 686 transitions. [2021-03-24 11:05:31,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.75) internal successors, (686), 8 states have internal predecessors, (686), 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 11:05:31,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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 11:05:31,954 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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 11:05:31,954 INFO L185 Difference]: Start difference. First operand has 57 places, 37 transitions, 254 flow. Second operand 8 states and 686 transitions. [2021-03-24 11:05:31,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 405 flow [2021-03-24 11:05:31,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 394 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-24 11:05:31,957 INFO L241 Difference]: Finished difference. Result has 66 places, 43 transitions, 337 flow [2021-03-24 11:05:31,958 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2021-03-24 11:05:31,958 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2021-03-24 11:05:31,958 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 337 flow [2021-03-24 11:05:31,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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 11:05:31,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:05:31,958 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:05:31,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:05:31,959 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:05:31,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:05:31,959 INFO L82 PathProgramCache]: Analyzing trace with hash -118707775, now seen corresponding path program 1 times [2021-03-24 11:05:31,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:05:31,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699903351] [2021-03-24 11:05:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:05:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:05:32,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:32,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:32,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:32,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:32,012 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:05:32,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:05:32,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:32,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:32,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:32,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:05:32,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:05:32,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:05:32,031 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 11:05:32,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699903351] [2021-03-24 11:05:32,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:05:32,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:05:32,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979401348] [2021-03-24 11:05:32,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:05:32,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:05:32,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:05:32,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:05:32,034 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 11:05:32,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 11:05:32,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:05:32,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 11:05:32,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:05:32,145 INFO L129 PetriNetUnfolder]: 28/114 cut-off events. [2021-03-24 11:05:32,145 INFO L130 PetriNetUnfolder]: For 475/557 co-relation queries the response was YES. [2021-03-24 11:05:32,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 114 events. 28/114 cut-off events. For 475/557 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 564 event pairs, 0 based on Foata normal form. 13/117 useless extension candidates. Maximal degree in co-relation 546. Up to 43 conditions per place. [2021-03-24 11:05:32,147 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2021-03-24 11:05:32,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 48 transitions, 431 flow [2021-03-24 11:05:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 11:05:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 11:05:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2021-03-24 11:05:32,149 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7460176991150442 [2021-03-24 11:05:32,149 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2021-03-24 11:05:32,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2021-03-24 11:05:32,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:05:32,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2021-03-24 11:05:32,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 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 11:05:32,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 113.0) internal successors, (1243), 11 states have internal predecessors, (1243), 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 11:05:32,154 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 113.0) internal successors, (1243), 11 states have internal predecessors, (1243), 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 11:05:32,154 INFO L185 Difference]: Start difference. First operand has 66 places, 43 transitions, 337 flow. Second operand 10 states and 843 transitions. [2021-03-24 11:05:32,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 48 transitions, 431 flow [2021-03-24 11:05:32,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 48 transitions, 392 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-24 11:05:32,158 INFO L241 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2021-03-24 11:05:32,158 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2021-03-24 11:05:32,159 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2021-03-24 11:05:32,159 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2021-03-24 11:05:32,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 11:05:32,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:05:32,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:05:32 BasicIcfg [2021-03-24 11:05:32,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:05:32,166 INFO L168 Benchmark]: Toolchain (without parser) took 3883.50 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 349.3 MB in the beginning and 341.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:05:32,169 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 385.9 MB. Free memory was 367.5 MB in the beginning and 367.4 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:05:32,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.14 ms. Allocated memory is still 385.9 MB. Free memory was 349.1 MB in the beginning and 347.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-03-24 11:05:32,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.22 ms. Allocated memory is still 385.9 MB. Free memory was 347.0 MB in the beginning and 344.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:05:32,169 INFO L168 Benchmark]: Boogie Preprocessor took 18.22 ms. Allocated memory is still 385.9 MB. Free memory was 344.9 MB in the beginning and 343.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:05:32,170 INFO L168 Benchmark]: RCFGBuilder took 370.02 ms. Allocated memory is still 385.9 MB. Free memory was 343.9 MB in the beginning and 319.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:05:32,173 INFO L168 Benchmark]: TraceAbstraction took 3033.71 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 318.7 MB in the beginning and 341.6 MB in the end (delta: -22.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.0 GB. [2021-03-24 11:05:32,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 385.9 MB. Free memory was 367.5 MB in the beginning and 367.4 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 413.14 ms. Allocated memory is still 385.9 MB. Free memory was 349.1 MB in the beginning and 347.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.22 ms. Allocated memory is still 385.9 MB. Free memory was 347.0 MB in the beginning and 344.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.22 ms. Allocated memory is still 385.9 MB. Free memory was 344.9 MB in the beginning and 343.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 370.02 ms. Allocated memory is still 385.9 MB. Free memory was 343.9 MB in the beginning and 319.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3033.71 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 318.7 MB in the beginning and 341.6 MB in the end (delta: -22.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1376.8ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 662, positive: 626, positive conditional: 0, positive unconditional: 626, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 421, positive: 405, positive conditional: 0, positive unconditional: 405, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 421, positive: 405, positive conditional: 0, positive unconditional: 405, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 662, positive: 221, positive conditional: 0, positive unconditional: 221, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 421, unknown conditional: 0, unknown unconditional: 421] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - 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, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2927.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 664.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1441.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 54 SDslu, 46 SDs, 0 SdLazy, 142 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 143.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 222.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=4, InterpolantAutomatonStates: 46, 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: 20.8ms SsaConstructionTime, 152.2ms SatisfiabilityAnalysisTime, 485.8ms InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...