/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/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:51:54,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:51:54,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:51:54,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:51:54,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:51:54,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:51:54,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:51:54,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:51:54,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:51:54,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:51:54,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:51:54,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:51:54,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:51:54,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:51:54,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:51:54,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:51:54,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:51:54,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:51:54,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:51:54,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:51:54,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:51:54,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:51:54,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:51:54,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:51:54,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:51:54,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:51:54,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:51:54,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:51:54,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:51:54,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:51:54,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:51:54,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:51:54,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:51:54,932 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:51:54,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:51:54,932 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:51:54,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:51:54,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:51:54,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:51:54,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:51:54,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:51:54,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:51:54,934 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:51:54,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:51:54,934 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:51:54,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:51:54,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:51:54,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:51:54,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:51:54,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:51:54,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:51:54,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:51:54,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:51:54,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:51:54,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:51:54,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:51:54,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:51:54,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:51:55,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:51:55,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:51:55,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:51:55,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:51:55,251 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:51:55,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-03-24 19:51:55,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2453e9047/fabfb1bda3784c18a96ea133b3e62140/FLAGaaba8822e [2021-03-24 19:51:55,861 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:51:55,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-03-24 19:51:55,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2453e9047/fabfb1bda3784c18a96ea133b3e62140/FLAGaaba8822e [2021-03-24 19:51:56,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2453e9047/fabfb1bda3784c18a96ea133b3e62140 [2021-03-24 19:51:56,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:51:56,294 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:51:56,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:51:56,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:51:56,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:51:56,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b83a7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56, skipping insertion in model container [2021-03-24 19:51:56,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:51:56,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:51:56,466 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/safe011_tso.opt.i[949,962] [2021-03-24 19:51:56,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:51:56,661 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:51:56,672 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/safe011_tso.opt.i[949,962] [2021-03-24 19:51:56,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:51:56,778 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:51:56,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56 WrapperNode [2021-03-24 19:51:56,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:51:56,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:51:56,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:51:56,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:51:56,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:51:56,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:51:56,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:51:56,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:51:56,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... [2021-03-24 19:51:56,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:51:56,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:51:56,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:51:56,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:51:56,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:51:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:51:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:51:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:51:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:51:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:51:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:51:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:51:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:51:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:51:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:51:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:51:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:51:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:51:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:51:56,953 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:51:57,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:51:57,212 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:51:57,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:51:57 BoogieIcfgContainer [2021-03-24 19:51:57,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:51:57,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:51:57,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:51:57,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:51:57,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:51:56" (1/3) ... [2021-03-24 19:51:57,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c7fd0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:51:57, skipping insertion in model container [2021-03-24 19:51:57,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:51:56" (2/3) ... [2021-03-24 19:51:57,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c7fd0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:51:57, skipping insertion in model container [2021-03-24 19:51:57,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:51:57" (3/3) ... [2021-03-24 19:51:57,219 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2021-03-24 19:51:57,238 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:51:57,241 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:51:57,241 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:51:57,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,296 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,302 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,302 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,306 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,306 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,308 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,308 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:51:57,310 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:51:57,325 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:51:57,342 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:51:57,342 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:51:57,342 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:51:57,342 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:51:57,343 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:51:57,343 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:51:57,343 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:51:57,343 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:51:57,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 19:51:57,384 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-24 19:51:57,384 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:51:57,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:51:57,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 19:51:57,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-24 19:51:57,395 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:51:57,406 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 19:51:57,411 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 19:51:57,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-24 19:51:57,445 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-24 19:51:57,445 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:51:57,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 19:51:57,448 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:51:58,577 INFO L154 LiptonReduction]: Checked pairs total: 996 [2021-03-24 19:51:58,577 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-24 19:51:58,579 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1189 [2021-03-24 19:51:58,588 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 19:51:58,588 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:51:58,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:58,589 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:58,589 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:58,594 INFO L82 PathProgramCache]: Analyzing trace with hash -397059577, now seen corresponding path program 1 times [2021-03-24 19:51:58,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:58,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798108623] [2021-03-24 19:51:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:58,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:58,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:58,786 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:51:58,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:51:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:58,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798108623] [2021-03-24 19:51:58,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:58,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:51:58,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603774626] [2021-03-24 19:51:58,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:51:58,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:58,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:51:58,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:51:58,818 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2021-03-24 19:51:58,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:58,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:58,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2021-03-24 19:51:58,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:58,882 INFO L129 PetriNetUnfolder]: 45/151 cut-off events. [2021-03-24 19:51:58,887 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:51:58,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 151 events. 45/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 687 event pairs, 17 based on Foata normal form. 5/142 useless extension candidates. Maximal degree in co-relation 243. Up to 62 conditions per place. [2021-03-24 19:51:58,891 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 6 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2021-03-24 19:51:58,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 87 flow [2021-03-24 19:51:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:51:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:51:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2021-03-24 19:51:58,907 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8228228228228228 [2021-03-24 19:51:58,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2021-03-24 19:51:58,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2021-03-24 19:51:58,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:58,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2021-03-24 19:51:58,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:58,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:58,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:58,927 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 274 transitions. [2021-03-24 19:51:58,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 87 flow [2021-03-24 19:51:58,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 84 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:51:58,932 INFO L241 Difference]: Finished difference. Result has 33 places, 27 transitions, 96 flow [2021-03-24 19:51:58,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2021-03-24 19:51:58,935 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2021-03-24 19:51:58,935 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 96 flow [2021-03-24 19:51:58,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:58,935 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:58,935 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:58,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:51:58,936 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:58,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:58,936 INFO L82 PathProgramCache]: Analyzing trace with hash 576054377, now seen corresponding path program 1 times [2021-03-24 19:51:58,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:58,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206195463] [2021-03-24 19:51:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:59,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:59,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:59,016 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:51:59,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:51:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:59,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206195463] [2021-03-24 19:51:59,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:59,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:51:59,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11341776] [2021-03-24 19:51:59,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:51:59,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:59,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:51:59,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:51:59,035 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2021-03-24 19:51:59,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:59,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2021-03-24 19:51:59,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:59,068 INFO L129 PetriNetUnfolder]: 36/126 cut-off events. [2021-03-24 19:51:59,069 INFO L130 PetriNetUnfolder]: For 44/261 co-relation queries the response was YES. [2021-03-24 19:51:59,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 126 events. 36/126 cut-off events. For 44/261 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 494 event pairs, 4 based on Foata normal form. 2/118 useless extension candidates. Maximal degree in co-relation 321. Up to 49 conditions per place. [2021-03-24 19:51:59,070 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 10 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2021-03-24 19:51:59,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 156 flow [2021-03-24 19:51:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:51:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:51:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2021-03-24 19:51:59,073 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8175675675675675 [2021-03-24 19:51:59,073 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2021-03-24 19:51:59,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2021-03-24 19:51:59,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:59,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2021-03-24 19:51:59,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 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 19:51:59,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 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 19:51:59,077 INFO L185 Difference]: Start difference. First operand has 33 places, 27 transitions, 96 flow. Second operand 4 states and 363 transitions. [2021-03-24 19:51:59,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 156 flow [2021-03-24 19:51:59,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:51:59,081 INFO L241 Difference]: Finished difference. Result has 37 places, 30 transitions, 132 flow [2021-03-24 19:51:59,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2021-03-24 19:51:59,081 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-24 19:51:59,081 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 132 flow [2021-03-24 19:51:59,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,082 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:59,082 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:59,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:51:59,082 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:59,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:59,083 INFO L82 PathProgramCache]: Analyzing trace with hash 576054501, now seen corresponding path program 1 times [2021-03-24 19:51:59,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:59,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044537476] [2021-03-24 19:51:59,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:59,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:59,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:59,175 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:51:59,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:51:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:59,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044537476] [2021-03-24 19:51:59,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:59,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:51:59,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113228209] [2021-03-24 19:51:59,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:51:59,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:59,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:51:59,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:51:59,187 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2021-03-24 19:51:59,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:59,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2021-03-24 19:51:59,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:59,222 INFO L129 PetriNetUnfolder]: 25/104 cut-off events. [2021-03-24 19:51:59,222 INFO L130 PetriNetUnfolder]: For 106/363 co-relation queries the response was YES. [2021-03-24 19:51:59,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 104 events. 25/104 cut-off events. For 106/363 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 408 event pairs, 1 based on Foata normal form. 5/105 useless extension candidates. Maximal degree in co-relation 299. Up to 38 conditions per place. [2021-03-24 19:51:59,225 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 12 selfloop transitions, 14 changer transitions 0/41 dead transitions. [2021-03-24 19:51:59,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 256 flow [2021-03-24 19:51:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:51:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:51:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2021-03-24 19:51:59,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8243243243243243 [2021-03-24 19:51:59,228 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 366 transitions. [2021-03-24 19:51:59,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 366 transitions. [2021-03-24 19:51:59,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:59,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 366 transitions. [2021-03-24 19:51:59,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 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 19:51:59,234 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 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 19:51:59,234 INFO L185 Difference]: Start difference. First operand has 37 places, 30 transitions, 132 flow. Second operand 4 states and 366 transitions. [2021-03-24 19:51:59,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 41 transitions, 256 flow [2021-03-24 19:51:59,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:51:59,243 INFO L241 Difference]: Finished difference. Result has 42 places, 39 transitions, 256 flow [2021-03-24 19:51:59,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2021-03-24 19:51:59,244 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2021-03-24 19:51:59,244 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 256 flow [2021-03-24 19:51:59,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:59,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:59,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:51:59,245 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:59,245 INFO L82 PathProgramCache]: Analyzing trace with hash 997486949, now seen corresponding path program 1 times [2021-03-24 19:51:59,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:59,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009175688] [2021-03-24 19:51:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:59,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:59,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:59,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:59,331 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:51:59,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:51:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:59,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009175688] [2021-03-24 19:51:59,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:59,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:51:59,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787518007] [2021-03-24 19:51:59,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:51:59,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:59,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:51:59,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:51:59,343 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 111 [2021-03-24 19:51:59,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:59,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 111 [2021-03-24 19:51:59,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:59,388 INFO L129 PetriNetUnfolder]: 39/137 cut-off events. [2021-03-24 19:51:59,389 INFO L130 PetriNetUnfolder]: For 416/884 co-relation queries the response was YES. [2021-03-24 19:51:59,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 137 events. 39/137 cut-off events. For 416/884 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 600 event pairs, 2 based on Foata normal form. 13/148 useless extension candidates. Maximal degree in co-relation 509. Up to 42 conditions per place. [2021-03-24 19:51:59,394 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 13 selfloop transitions, 7 changer transitions 20/54 dead transitions. [2021-03-24 19:51:59,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 464 flow [2021-03-24 19:51:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:51:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:51:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2021-03-24 19:51:59,398 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8018018018018018 [2021-03-24 19:51:59,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2021-03-24 19:51:59,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2021-03-24 19:51:59,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:59,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2021-03-24 19:51:59,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,406 INFO L185 Difference]: Start difference. First operand has 42 places, 39 transitions, 256 flow. Second operand 5 states and 445 transitions. [2021-03-24 19:51:59,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 464 flow [2021-03-24 19:51:59,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 19:51:59,416 INFO L241 Difference]: Finished difference. Result has 48 places, 31 transitions, 200 flow [2021-03-24 19:51:59,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2021-03-24 19:51:59,416 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2021-03-24 19:51:59,417 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 200 flow [2021-03-24 19:51:59,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,417 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:59,417 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:59,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:51:59,418 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash -462389049, now seen corresponding path program 1 times [2021-03-24 19:51:59,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:59,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295476062] [2021-03-24 19:51:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:59,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:59,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:59,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295476062] [2021-03-24 19:51:59,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:59,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:51:59,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068966398] [2021-03-24 19:51:59,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:51:59,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:59,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:51:59,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:51:59,487 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 111 [2021-03-24 19:51:59,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:59,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 111 [2021-03-24 19:51:59,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:59,508 INFO L129 PetriNetUnfolder]: 9/56 cut-off events. [2021-03-24 19:51:59,508 INFO L130 PetriNetUnfolder]: For 230/270 co-relation queries the response was YES. [2021-03-24 19:51:59,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 56 events. 9/56 cut-off events. For 230/270 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 148 event pairs, 0 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 201. Up to 16 conditions per place. [2021-03-24 19:51:59,509 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 4 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2021-03-24 19:51:59,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 230 flow [2021-03-24 19:51:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:51:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:51:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-03-24 19:51:59,512 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8948948948948949 [2021-03-24 19:51:59,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-03-24 19:51:59,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-03-24 19:51:59,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:59,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-03-24 19:51:59,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,514 INFO L185 Difference]: Start difference. First operand has 48 places, 31 transitions, 200 flow. Second operand 3 states and 298 transitions. [2021-03-24 19:51:59,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 230 flow [2021-03-24 19:51:59,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 188 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-24 19:51:59,518 INFO L241 Difference]: Finished difference. Result has 44 places, 32 transitions, 188 flow [2021-03-24 19:51:59,518 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2021-03-24 19:51:59,519 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-24 19:51:59,519 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 188 flow [2021-03-24 19:51:59,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,520 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:59,520 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:59,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:51:59,520 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:59,521 INFO L82 PathProgramCache]: Analyzing trace with hash -903799255, now seen corresponding path program 1 times [2021-03-24 19:51:59,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:59,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247008344] [2021-03-24 19:51:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:59,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:59,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:59,595 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-24 19:51:59,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 19:51:59,616 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:51:59,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:51:59,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:59,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247008344] [2021-03-24 19:51:59,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:59,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:51:59,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470497578] [2021-03-24 19:51:59,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:51:59,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:59,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:51:59,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:51:59,632 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 111 [2021-03-24 19:51:59,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:59,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 111 [2021-03-24 19:51:59,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:59,731 INFO L129 PetriNetUnfolder]: 108/256 cut-off events. [2021-03-24 19:51:59,731 INFO L130 PetriNetUnfolder]: For 165/178 co-relation queries the response was YES. [2021-03-24 19:51:59,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 256 events. 108/256 cut-off events. For 165/178 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1328 event pairs, 12 based on Foata normal form. 18/251 useless extension candidates. Maximal degree in co-relation 602. Up to 111 conditions per place. [2021-03-24 19:51:59,733 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 12 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2021-03-24 19:51:59,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 262 flow [2021-03-24 19:51:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:51:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:51:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 534 transitions. [2021-03-24 19:51:59,736 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8018018018018018 [2021-03-24 19:51:59,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 534 transitions. [2021-03-24 19:51:59,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 534 transitions. [2021-03-24 19:51:59,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:59,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 534 transitions. [2021-03-24 19:51:59,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,739 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,739 INFO L185 Difference]: Start difference. First operand has 44 places, 32 transitions, 188 flow. Second operand 6 states and 534 transitions. [2021-03-24 19:51:59,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 262 flow [2021-03-24 19:51:59,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:51:59,742 INFO L241 Difference]: Finished difference. Result has 52 places, 41 transitions, 260 flow [2021-03-24 19:51:59,742 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2021-03-24 19:51:59,742 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2021-03-24 19:51:59,743 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 260 flow [2021-03-24 19:51:59,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,743 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:59,743 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:59,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:51:59,743 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1928410807, now seen corresponding path program 1 times [2021-03-24 19:51:59,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:59,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881022285] [2021-03-24 19:51:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:51:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:51:59,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:59,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:59,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:51:59,818 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-24 19:51:59,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 19:51:59,838 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:51:59,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:51:59,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:51:59,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:51:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:51:59,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881022285] [2021-03-24 19:51:59,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:51:59,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:51:59,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547561500] [2021-03-24 19:51:59,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:51:59,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:51:59,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:51:59,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:51:59,850 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 111 [2021-03-24 19:51:59,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:51:59,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 111 [2021-03-24 19:51:59,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:51:59,964 INFO L129 PetriNetUnfolder]: 86/228 cut-off events. [2021-03-24 19:51:59,964 INFO L130 PetriNetUnfolder]: For 485/738 co-relation queries the response was YES. [2021-03-24 19:51:59,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 228 events. 86/228 cut-off events. For 485/738 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1212 event pairs, 0 based on Foata normal form. 49/253 useless extension candidates. Maximal degree in co-relation 863. Up to 116 conditions per place. [2021-03-24 19:51:59,969 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 6 selfloop transitions, 19 changer transitions 7/57 dead transitions. [2021-03-24 19:51:59,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 415 flow [2021-03-24 19:51:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:51:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:51:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 712 transitions. [2021-03-24 19:51:59,971 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8018018018018018 [2021-03-24 19:51:59,971 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 712 transitions. [2021-03-24 19:51:59,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 712 transitions. [2021-03-24 19:51:59,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:51:59,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 712 transitions. [2021-03-24 19:51:59,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 111.0) internal successors, (999), 9 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,975 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 111.0) internal successors, (999), 9 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,975 INFO L185 Difference]: Start difference. First operand has 52 places, 41 transitions, 260 flow. Second operand 8 states and 712 transitions. [2021-03-24 19:51:59,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 415 flow [2021-03-24 19:51:59,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 19:51:59,981 INFO L241 Difference]: Finished difference. Result has 62 places, 50 transitions, 378 flow [2021-03-24 19:51:59,981 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2021-03-24 19:51:59,981 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2021-03-24 19:51:59,981 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 378 flow [2021-03-24 19:51:59,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:51:59,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:51:59,982 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:51:59,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:51:59,982 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:51:59,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:51:59,983 INFO L82 PathProgramCache]: Analyzing trace with hash -787282941, now seen corresponding path program 1 times [2021-03-24 19:51:59,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:51:59,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504443743] [2021-03-24 19:51:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:00,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:00,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:00,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:00,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:00,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:00,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:00,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:00,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:00,051 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-24 19:52:00,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 19:52:00,067 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:52:00,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:52:00,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:00,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:00,078 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 19:52:00,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504443743] [2021-03-24 19:52:00,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:00,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:52:00,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092655141] [2021-03-24 19:52:00,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:52:00,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:00,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:52:00,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:52:00,081 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 111 [2021-03-24 19:52:00,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 378 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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 19:52:00,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:00,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 111 [2021-03-24 19:52:00,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:00,209 INFO L129 PetriNetUnfolder]: 67/191 cut-off events. [2021-03-24 19:52:00,209 INFO L130 PetriNetUnfolder]: For 990/1355 co-relation queries the response was YES. [2021-03-24 19:52:00,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 191 events. 67/191 cut-off events. For 990/1355 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1046 event pairs, 0 based on Foata normal form. 46/213 useless extension candidates. Maximal degree in co-relation 918. Up to 94 conditions per place. [2021-03-24 19:52:00,211 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2021-03-24 19:52:00,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 51 transitions, 434 flow [2021-03-24 19:52:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:52:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:52:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 876 transitions. [2021-03-24 19:52:00,214 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7891891891891892 [2021-03-24 19:52:00,214 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 876 transitions. [2021-03-24 19:52:00,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 876 transitions. [2021-03-24 19:52:00,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:00,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 876 transitions. [2021-03-24 19:52:00,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 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 19:52:00,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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 19:52:00,219 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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 19:52:00,219 INFO L185 Difference]: Start difference. First operand has 62 places, 50 transitions, 378 flow. Second operand 10 states and 876 transitions. [2021-03-24 19:52:00,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 51 transitions, 434 flow [2021-03-24 19:52:00,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 351 flow, removed 22 selfloop flow, removed 8 redundant places. [2021-03-24 19:52:00,226 INFO L241 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2021-03-24 19:52:00,226 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2021-03-24 19:52:00,226 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2021-03-24 19:52:00,226 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2021-03-24 19:52:00,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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 19:52:00,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:52:00,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:52:00 BasicIcfg [2021-03-24 19:52:00,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:52:00,234 INFO L168 Benchmark]: Toolchain (without parser) took 3937.20 ms. Allocated memory was 255.9 MB in the beginning and 450.9 MB in the end (delta: 195.0 MB). Free memory was 235.5 MB in the beginning and 275.5 MB in the end (delta: -40.0 MB). Peak memory consumption was 154.4 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:00,234 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:52:00,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.60 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 235.0 MB in the beginning and 338.0 MB in the end (delta: -103.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:00,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.28 ms. Allocated memory is still 375.4 MB. Free memory was 338.0 MB in the beginning and 335.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:00,237 INFO L168 Benchmark]: Boogie Preprocessor took 29.03 ms. Allocated memory is still 375.4 MB. Free memory was 335.7 MB in the beginning and 334.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:00,239 INFO L168 Benchmark]: RCFGBuilder took 341.38 ms. Allocated memory is still 375.4 MB. Free memory was 334.4 MB in the beginning and 350.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:00,239 INFO L168 Benchmark]: TraceAbstraction took 3015.91 ms. Allocated memory was 375.4 MB in the beginning and 450.9 MB in the end (delta: 75.5 MB). Free memory was 350.4 MB in the beginning and 275.5 MB in the end (delta: 74.9 MB). Peak memory consumption was 151.5 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:00,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 483.60 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 235.0 MB in the beginning and 338.0 MB in the end (delta: -103.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.28 ms. Allocated memory is still 375.4 MB. Free memory was 338.0 MB in the beginning and 335.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.03 ms. Allocated memory is still 375.4 MB. Free memory was 335.7 MB in the beginning and 334.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 341.38 ms. Allocated memory is still 375.4 MB. Free memory was 334.4 MB in the beginning and 350.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3015.91 ms. Allocated memory was 375.4 MB in the beginning and 450.9 MB in the end (delta: 75.5 MB). Free memory was 350.4 MB in the beginning and 275.5 MB in the end (delta: 74.9 MB). Peak memory consumption was 151.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1166.5ms, 68 PlacesBefore, 32 PlacesAfterwards, 59 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 540, positive: 507, positive conditional: 0, positive unconditional: 507, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 481, positive: 459, positive conditional: 0, positive unconditional: 459, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 481, positive: 459, positive conditional: 0, positive unconditional: 459, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 481, positive: 455, positive conditional: 0, positive unconditional: 455, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 108, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 540, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 481, unknown conditional: 0, unknown unconditional: 481] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2889.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 724.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1240.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 52 SDslu, 35 SDs, 0 SdLazy, 121 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 252.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=378occurred in iteration=7, InterpolantAutomatonStates: 43, 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: 37.5ms SsaConstructionTime, 175.3ms SatisfiabilityAnalysisTime, 538.2ms InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 491 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...