/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:48:12,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:48:12,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:48:12,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:48:12,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:48:12,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:48:12,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:48:12,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:48:12,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:48:12,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:48:12,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:48:12,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:48:12,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:48:12,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:48:12,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:48:12,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:48:12,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:48:12,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:48:12,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:48:12,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:48:12,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:48:12,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:48:12,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:48:12,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:48:12,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:48:12,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:48:12,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:48:12,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:48:12,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:48:12,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:48:12,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:48:12,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:48:12,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:48:12,989 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:48:12,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:48:12,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:48:12,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:48:12,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:48:12,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:48:12,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:48:12,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:48:12,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:48:12,991 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:48:12,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:48:12,991 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:48:12,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:48:12,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:48:12,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:48:12,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:48:12,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:48:12,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:48:12,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:48:12,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:48:12,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:48:12,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:48:12,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:48:12,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:48:12,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:48:13,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:48:13,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:48:13,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:48:13,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:48:13,256 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:48:13,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2021-03-24 19:48:13,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce87ac13/a1d3f7cb4dc94c6e955fc3fb51d20f55/FLAG1c3fb4a0d [2021-03-24 19:48:13,710 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:48:13,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2021-03-24 19:48:13,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce87ac13/a1d3f7cb4dc94c6e955fc3fb51d20f55/FLAG1c3fb4a0d [2021-03-24 19:48:13,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce87ac13/a1d3f7cb4dc94c6e955fc3fb51d20f55 [2021-03-24 19:48:13,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:48:13,737 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:48:13,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:48:13,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:48:13,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:48:13,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:48:13" (1/1) ... [2021-03-24 19:48:13,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7e62a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:13, skipping insertion in model container [2021-03-24 19:48:13,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:48:13" (1/1) ... [2021-03-24 19:48:13,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:48:13,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:48:13,915 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/safe000_tso.oepc.i[950,963] [2021-03-24 19:48:14,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:48:14,084 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:48:14,096 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/safe000_tso.oepc.i[950,963] [2021-03-24 19:48:14,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:48:14,184 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:48:14,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14 WrapperNode [2021-03-24 19:48:14,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:48:14,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:48:14,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:48:14,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:48:14,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:48:14,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:48:14,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:48:14,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:48:14,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... [2021-03-24 19:48:14,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:48:14,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:48:14,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:48:14,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:48:14,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:48:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:48:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:48:14,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:48:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:48:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:48:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:48:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:48:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:48:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:48:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:48:14,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:48:14,386 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:48:14,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:48:14,626 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:48:14,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:48:14 BoogieIcfgContainer [2021-03-24 19:48:14,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:48:14,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:48:14,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:48:14,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:48:14,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:48:13" (1/3) ... [2021-03-24 19:48:14,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf6378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:48:14, skipping insertion in model container [2021-03-24 19:48:14,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:48:14" (2/3) ... [2021-03-24 19:48:14,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf6378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:48:14, skipping insertion in model container [2021-03-24 19:48:14,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:48:14" (3/3) ... [2021-03-24 19:48:14,633 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2021-03-24 19:48:14,637 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:48:14,640 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:48:14,640 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:48:14,659 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,661 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,661 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,661 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,661 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,662 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,662 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,666 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,666 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,669 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,669 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,671 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,671 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:48:14,673 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:48:14,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:48:14,705 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:48:14,705 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:48:14,705 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:48:14,705 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:48:14,705 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:48:14,705 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:48:14,705 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:48:14,706 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:48:14,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:48:14,741 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 19:48:14,741 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:48:14,744 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 49 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 19:48:14,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:48:14,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 19:48:14,748 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:48:14,757 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:48:14,759 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:48:14,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 19:48:14,771 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 19:48:14,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:48:14,772 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 19:48:14,773 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:48:16,155 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-24 19:48:16,155 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-24 19:48:16,157 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1410 [2021-03-24 19:48:16,164 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 19:48:16,165 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:48:16,165 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:48:16,165 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:48:16,166 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:48:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:48:16,169 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-24 19:48:16,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:48:16,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773924385] [2021-03-24 19:48:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:48:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:48:16,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:16,333 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:48:16,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:48:16,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:48:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:48:16,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773924385] [2021-03-24 19:48:16,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:48:16,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:48:16,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396265626] [2021-03-24 19:48:16,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:48:16,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:48:16,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:48:16,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:48:16,367 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:48:16,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:48:16,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:48:16,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:48:16,443 INFO L129 PetriNetUnfolder]: 78/200 cut-off events. [2021-03-24 19:48:16,443 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:48:16,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 200 events. 78/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 959 event pairs, 17 based on Foata normal form. 23/216 useless extension candidates. Maximal degree in co-relation 350. Up to 58 conditions per place. [2021-03-24 19:48:16,445 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 6 changer transitions 15/45 dead transitions. [2021-03-24 19:48:16,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 165 flow [2021-03-24 19:48:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:48:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:48:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-24 19:48:16,456 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7598522167487685 [2021-03-24 19:48:16,456 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-24 19:48:16,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-24 19:48:16,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:48:16,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-24 19:48:16,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,470 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 617 transitions. [2021-03-24 19:48:16,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 165 flow [2021-03-24 19:48:16,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:48:16,476 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-24 19:48:16,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-24 19:48:16,478 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-24 19:48:16,478 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 106 flow [2021-03-24 19:48:16,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,478 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:48:16,479 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:48:16,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:48:16,479 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:48:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:48:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1038676965, now seen corresponding path program 1 times [2021-03-24 19:48:16,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:48:16,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361595630] [2021-03-24 19:48:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:48:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:48:16,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:48:16,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:16,528 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:48:16,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:48:16,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:48:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:48:16,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361595630] [2021-03-24 19:48:16,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:48:16,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:48:16,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084249283] [2021-03-24 19:48:16,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:48:16,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:48:16,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:48:16,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:48:16,545 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:48:16,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:48:16,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:48:16,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:48:16,605 INFO L129 PetriNetUnfolder]: 33/122 cut-off events. [2021-03-24 19:48:16,605 INFO L130 PetriNetUnfolder]: For 195/244 co-relation queries the response was YES. [2021-03-24 19:48:16,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 122 events. 33/122 cut-off events. For 195/244 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 513 event pairs, 3 based on Foata normal form. 14/132 useless extension candidates. Maximal degree in co-relation 374. Up to 41 conditions per place. [2021-03-24 19:48:16,607 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 12 changer transitions 12/48 dead transitions. [2021-03-24 19:48:16,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 318 flow [2021-03-24 19:48:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:48:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:48:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2021-03-24 19:48:16,609 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7524630541871922 [2021-03-24 19:48:16,609 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2021-03-24 19:48:16,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2021-03-24 19:48:16,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:48:16,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2021-03-24 19:48:16,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,613 INFO L185 Difference]: Start difference. First operand has 40 places, 25 transitions, 106 flow. Second operand 7 states and 611 transitions. [2021-03-24 19:48:16,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 318 flow [2021-03-24 19:48:16,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 310 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 19:48:16,615 INFO L241 Difference]: Finished difference. Result has 47 places, 32 transitions, 205 flow [2021-03-24 19:48:16,615 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2021-03-24 19:48:16,616 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2021-03-24 19:48:16,616 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 205 flow [2021-03-24 19:48:16,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,616 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:48:16,616 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:48:16,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:48:16,617 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:48:16,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:48:16,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2013419581, now seen corresponding path program 1 times [2021-03-24 19:48:16,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:48:16,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513998784] [2021-03-24 19:48:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:48:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:48:16,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:16,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:48:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:48:16,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513998784] [2021-03-24 19:48:16,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:48:16,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:48:16,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218376013] [2021-03-24 19:48:16,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:48:16,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:48:16,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:48:16,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:48:16,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2021-03-24 19:48:16,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:48:16,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2021-03-24 19:48:16,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:48:16,708 INFO L129 PetriNetUnfolder]: 17/82 cut-off events. [2021-03-24 19:48:16,708 INFO L130 PetriNetUnfolder]: For 219/238 co-relation queries the response was YES. [2021-03-24 19:48:16,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 82 events. 17/82 cut-off events. For 219/238 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 317 event pairs, 4 based on Foata normal form. 7/86 useless extension candidates. Maximal degree in co-relation 274. Up to 24 conditions per place. [2021-03-24 19:48:16,710 INFO L132 encePairwiseOnDemand]: 112/116 looper letters, 2 selfloop transitions, 3 changer transitions 2/34 dead transitions. [2021-03-24 19:48:16,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 233 flow [2021-03-24 19:48:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:48:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:48:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2021-03-24 19:48:16,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8327586206896552 [2021-03-24 19:48:16,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2021-03-24 19:48:16,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2021-03-24 19:48:16,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:48:16,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2021-03-24 19:48:16,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,717 INFO L185 Difference]: Start difference. First operand has 47 places, 32 transitions, 205 flow. Second operand 5 states and 483 transitions. [2021-03-24 19:48:16,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 233 flow [2021-03-24 19:48:16,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 225 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-24 19:48:16,725 INFO L241 Difference]: Finished difference. Result has 48 places, 32 transitions, 212 flow [2021-03-24 19:48:16,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2021-03-24 19:48:16,726 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-24 19:48:16,726 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 212 flow [2021-03-24 19:48:16,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:48:16,726 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:48:16,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:48:16,727 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:48:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:48:16,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2071418111, now seen corresponding path program 1 times [2021-03-24 19:48:16,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:48:16,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409472302] [2021-03-24 19:48:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:48:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:48:16,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:48:16,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:16,798 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:48:16,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:48:16,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:48:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:48:16,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409472302] [2021-03-24 19:48:16,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:48:16,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:48:16,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254797055] [2021-03-24 19:48:16,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:48:16,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:48:16,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:48:16,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:48:16,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:48:16,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:48:16,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:48:16,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:48:16,879 INFO L129 PetriNetUnfolder]: 20/88 cut-off events. [2021-03-24 19:48:16,879 INFO L130 PetriNetUnfolder]: For 249/299 co-relation queries the response was YES. [2021-03-24 19:48:16,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 88 events. 20/88 cut-off events. For 249/299 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 313 event pairs, 1 based on Foata normal form. 9/96 useless extension candidates. Maximal degree in co-relation 344. Up to 30 conditions per place. [2021-03-24 19:48:16,880 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 11 selfloop transitions, 15 changer transitions 5/43 dead transitions. [2021-03-24 19:48:16,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 368 flow [2021-03-24 19:48:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:48:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:48:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 521 transitions. [2021-03-24 19:48:16,882 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7485632183908046 [2021-03-24 19:48:16,882 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 521 transitions. [2021-03-24 19:48:16,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 521 transitions. [2021-03-24 19:48:16,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:48:16,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 521 transitions. [2021-03-24 19:48:16,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,885 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,885 INFO L185 Difference]: Start difference. First operand has 48 places, 32 transitions, 212 flow. Second operand 6 states and 521 transitions. [2021-03-24 19:48:16,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 368 flow [2021-03-24 19:48:16,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 340 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 19:48:16,888 INFO L241 Difference]: Finished difference. Result has 51 places, 36 transitions, 298 flow [2021-03-24 19:48:16,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2021-03-24 19:48:16,888 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-24 19:48:16,888 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 298 flow [2021-03-24 19:48:16,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,888 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:48:16,888 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:48:16,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:48:16,888 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:48:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:48:16,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1987739445, now seen corresponding path program 1 times [2021-03-24 19:48:16,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:48:16,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4062309] [2021-03-24 19:48:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:48:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:48:16,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:48:16,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:16,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:16,965 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:48:16,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:48:16,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:16,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:48:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:48:16,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4062309] [2021-03-24 19:48:16,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:48:16,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:48:16,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583522183] [2021-03-24 19:48:16,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:48:16,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:48:16,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:48:16,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:48:16,987 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:48:16,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:16,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:48:16,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:48:16,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:48:17,032 INFO L129 PetriNetUnfolder]: 18/85 cut-off events. [2021-03-24 19:48:17,033 INFO L130 PetriNetUnfolder]: For 293/366 co-relation queries the response was YES. [2021-03-24 19:48:17,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 85 events. 18/85 cut-off events. For 293/366 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 321 event pairs, 0 based on Foata normal form. 7/91 useless extension candidates. Maximal degree in co-relation 386. Up to 26 conditions per place. [2021-03-24 19:48:17,033 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 9 selfloop transitions, 9 changer transitions 16/46 dead transitions. [2021-03-24 19:48:17,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 474 flow [2021-03-24 19:48:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:48:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:48:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2021-03-24 19:48:17,035 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7456896551724138 [2021-03-24 19:48:17,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 519 transitions. [2021-03-24 19:48:17,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 519 transitions. [2021-03-24 19:48:17,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:48:17,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 519 transitions. [2021-03-24 19:48:17,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,037 INFO L185 Difference]: Start difference. First operand has 51 places, 36 transitions, 298 flow. Second operand 6 states and 519 transitions. [2021-03-24 19:48:17,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 474 flow [2021-03-24 19:48:17,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 456 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-03-24 19:48:17,040 INFO L241 Difference]: Finished difference. Result has 55 places, 29 transitions, 233 flow [2021-03-24 19:48:17,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2021-03-24 19:48:17,040 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-24 19:48:17,040 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 233 flow [2021-03-24 19:48:17,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:48:17,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:48:17,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:48:17,041 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:48:17,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:48:17,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1279119241, now seen corresponding path program 1 times [2021-03-24 19:48:17,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:48:17,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842459147] [2021-03-24 19:48:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:48:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:48:17,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:48:17,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:17,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:17,106 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:48:17,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:48:17,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:48:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:48:17,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842459147] [2021-03-24 19:48:17,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:48:17,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:48:17,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700596306] [2021-03-24 19:48:17,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:48:17,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:48:17,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:48:17,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:48:17,129 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:48:17,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:48:17,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:48:17,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:48:17,167 INFO L129 PetriNetUnfolder]: 3/40 cut-off events. [2021-03-24 19:48:17,167 INFO L130 PetriNetUnfolder]: For 155/188 co-relation queries the response was YES. [2021-03-24 19:48:17,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 40 events. 3/40 cut-off events. For 155/188 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 91 event pairs, 0 based on Foata normal form. 5/45 useless extension candidates. Maximal degree in co-relation 173. Up to 10 conditions per place. [2021-03-24 19:48:17,168 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 6 selfloop transitions, 8 changer transitions 6/32 dead transitions. [2021-03-24 19:48:17,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 32 transitions, 313 flow [2021-03-24 19:48:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:48:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:48:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2021-03-24 19:48:17,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7370689655172413 [2021-03-24 19:48:17,169 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2021-03-24 19:48:17,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2021-03-24 19:48:17,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:48:17,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2021-03-24 19:48:17,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,172 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,172 INFO L185 Difference]: Start difference. First operand has 55 places, 29 transitions, 233 flow. Second operand 6 states and 513 transitions. [2021-03-24 19:48:17,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 32 transitions, 313 flow [2021-03-24 19:48:17,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 32 transitions, 261 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-24 19:48:17,174 INFO L241 Difference]: Finished difference. Result has 52 places, 26 transitions, 186 flow [2021-03-24 19:48:17,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=52, PETRI_TRANSITIONS=26} [2021-03-24 19:48:17,174 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2021-03-24 19:48:17,175 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 26 transitions, 186 flow [2021-03-24 19:48:17,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,175 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:48:17,175 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:48:17,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:48:17,175 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:48:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:48:17,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2043956571, now seen corresponding path program 2 times [2021-03-24 19:48:17,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:48:17,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054165352] [2021-03-24 19:48:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:48:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:48:17,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:48:17,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:17,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:17,235 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:48:17,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:48:17,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:48:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:48:17,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054165352] [2021-03-24 19:48:17,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:48:17,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:48:17,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091128847] [2021-03-24 19:48:17,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:48:17,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:48:17,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:48:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:48:17,255 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:48:17,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 26 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:48:17,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:48:17,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:48:17,290 INFO L129 PetriNetUnfolder]: 1/32 cut-off events. [2021-03-24 19:48:17,291 INFO L130 PetriNetUnfolder]: For 90/100 co-relation queries the response was YES. [2021-03-24 19:48:17,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 32 events. 1/32 cut-off events. For 90/100 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 7/39 useless extension candidates. Maximal degree in co-relation 125. Up to 7 conditions per place. [2021-03-24 19:48:17,291 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 5 selfloop transitions, 4 changer transitions 6/27 dead transitions. [2021-03-24 19:48:17,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 27 transitions, 232 flow [2021-03-24 19:48:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:48:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:48:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2021-03-24 19:48:17,294 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7327586206896551 [2021-03-24 19:48:17,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2021-03-24 19:48:17,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2021-03-24 19:48:17,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:48:17,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2021-03-24 19:48:17,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,297 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,297 INFO L185 Difference]: Start difference. First operand has 52 places, 26 transitions, 186 flow. Second operand 7 states and 595 transitions. [2021-03-24 19:48:17,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 27 transitions, 232 flow [2021-03-24 19:48:17,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 27 transitions, 190 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-03-24 19:48:17,298 INFO L241 Difference]: Finished difference. Result has 51 places, 21 transitions, 110 flow [2021-03-24 19:48:17,298 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=21} [2021-03-24 19:48:17,298 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-24 19:48:17,299 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 21 transitions, 110 flow [2021-03-24 19:48:17,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,299 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:48:17,299 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:48:17,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:48:17,299 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:48:17,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:48:17,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2108717791, now seen corresponding path program 3 times [2021-03-24 19:48:17,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:48:17,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039738367] [2021-03-24 19:48:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:48:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:48:17,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:48:17,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:17,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:48:17,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:48:17,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:48:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:48:17,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039738367] [2021-03-24 19:48:17,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:48:17,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:48:17,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300456610] [2021-03-24 19:48:17,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:48:17,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:48:17,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:48:17,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:48:17,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 116 [2021-03-24 19:48:17,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 21 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:48:17,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 116 [2021-03-24 19:48:17,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:48:17,386 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-03-24 19:48:17,386 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-03-24 19:48:17,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 23 events. 1/23 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 2/25 useless extension candidates. Maximal degree in co-relation 70. Up to 5 conditions per place. [2021-03-24 19:48:17,387 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-03-24 19:48:17,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 22 transitions, 132 flow [2021-03-24 19:48:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:48:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:48:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 555 transitions. [2021-03-24 19:48:17,388 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7974137931034483 [2021-03-24 19:48:17,388 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 555 transitions. [2021-03-24 19:48:17,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 555 transitions. [2021-03-24 19:48:17,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:48:17,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 555 transitions. [2021-03-24 19:48:17,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,391 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,391 INFO L185 Difference]: Start difference. First operand has 51 places, 21 transitions, 110 flow. Second operand 6 states and 555 transitions. [2021-03-24 19:48:17,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 22 transitions, 132 flow [2021-03-24 19:48:17,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 22 transitions, 90 flow, removed 8 selfloop flow, removed 12 redundant places. [2021-03-24 19:48:17,393 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-24 19:48:17,393 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-24 19:48:17,393 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-24 19:48:17,393 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-03-24 19:48:17,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:48:17,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:48:17,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:48:17 BasicIcfg [2021-03-24 19:48:17,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:48:17,398 INFO L168 Benchmark]: Toolchain (without parser) took 3659.17 ms. Allocated memory was 360.7 MB in the beginning and 459.3 MB in the end (delta: 98.6 MB). Free memory was 324.1 MB in the beginning and 332.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 91.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:48:17,399 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 360.7 MB. Free memory is still 341.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:48:17,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.61 ms. Allocated memory is still 360.7 MB. Free memory was 323.8 MB in the beginning and 323.4 MB in the end (delta: 441.9 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-03-24 19:48:17,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 360.7 MB. Free memory was 323.4 MB in the beginning and 321.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:48:17,401 INFO L168 Benchmark]: Boogie Preprocessor took 33.89 ms. Allocated memory is still 360.7 MB. Free memory was 321.3 MB in the beginning and 320.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:48:17,402 INFO L168 Benchmark]: RCFGBuilder took 356.19 ms. Allocated memory is still 360.7 MB. Free memory was 319.2 MB in the beginning and 296.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:48:17,403 INFO L168 Benchmark]: TraceAbstraction took 2767.23 ms. Allocated memory was 360.7 MB in the beginning and 459.3 MB in the end (delta: 98.6 MB). Free memory was 295.1 MB in the beginning and 332.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.0 GB. [2021-03-24 19:48:17,405 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 360.7 MB. Free memory is still 341.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 448.61 ms. Allocated memory is still 360.7 MB. Free memory was 323.8 MB in the beginning and 323.4 MB in the end (delta: 441.9 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 360.7 MB. Free memory was 323.4 MB in the beginning and 321.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.89 ms. Allocated memory is still 360.7 MB. Free memory was 321.3 MB in the beginning and 320.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 356.19 ms. Allocated memory is still 360.7 MB. Free memory was 319.2 MB in the beginning and 296.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2767.23 ms. Allocated memory was 360.7 MB in the beginning and 459.3 MB in the end (delta: 98.6 MB). Free memory was 295.1 MB in the beginning and 332.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1396.4ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 681, positive: 634, positive conditional: 0, positive unconditional: 634, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 550, positive: 523, positive conditional: 0, positive unconditional: 523, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 550, positive: 523, positive conditional: 0, positive unconditional: 523, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 550, positive: 523, positive conditional: 0, positive unconditional: 523, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 87, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 681, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 550, unknown conditional: 0, unknown unconditional: 550] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2692.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 474.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1455.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70 SDtfs, 67 SDslu, 91 SDs, 0 SdLazy, 133 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 240.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=4, InterpolantAutomatonStates: 50, 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: 20.7ms SsaConstructionTime, 150.1ms SatisfiabilityAnalysisTime, 454.0ms InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 616 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...