/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/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:25:13,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:25:13,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:25:13,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:25:13,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:25:13,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:25:13,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:25:13,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:25:13,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:25:13,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:25:13,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:25:13,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:25:13,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:25:13,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:25:13,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:25:13,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:25:13,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:25:13,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:25:13,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:25:13,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:25:13,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:25:13,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:25:13,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:25:13,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:25:13,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:25:13,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:25:13,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:25:13,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:25:13,863 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 [2021-03-11 20:25:13,897 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:25:13,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:25:13,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:25:13,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:25:13,901 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:25:13,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:25:13,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:25:13,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:25:13,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:25:13,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:25:13,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:25:13,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:25:13,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:25:13,903 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:25:13,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:25:13,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:25:13,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:25:13,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:25:13,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:25:13,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:25:13,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:25:13,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:25:13,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:25:13,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:25:13,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:25:13,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:25:13,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:25:13,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:25:13,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:25:14,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:25:14,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:25:14,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:25:14,212 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:25:14,212 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:25:14,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2021-03-11 20:25:14,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd1f67b5/1076f2b2b5f64221b0883a295d9f6c14/FLAGe5c496dd0 [2021-03-11 20:25:14,782 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:25:14,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2021-03-11 20:25:14,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd1f67b5/1076f2b2b5f64221b0883a295d9f6c14/FLAGe5c496dd0 [2021-03-11 20:25:15,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd1f67b5/1076f2b2b5f64221b0883a295d9f6c14 [2021-03-11 20:25:15,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:25:15,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:25:15,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:25:15,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:25:15,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:25:15,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5651c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15, skipping insertion in model container [2021-03-11 20:25:15,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:25:15,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:25:15,435 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/safe018_tso.oepc.i[950,963] [2021-03-11 20:25:15,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:25:15,607 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:25:15,618 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/safe018_tso.oepc.i[950,963] [2021-03-11 20:25:15,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:25:15,730 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:25:15,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15 WrapperNode [2021-03-11 20:25:15,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:25:15,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:25:15,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:25:15,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:25:15,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:25:15,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:25:15,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:25:15,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:25:15,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (1/1) ... [2021-03-11 20:25:15,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:25:15,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:25:15,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:25:15,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:25:15,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (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 [2021-03-11 20:25:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:25:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:25:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:25:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:25:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:25:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:25:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:25:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:25:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:25:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:25:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:25:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:25:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:25:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:25:15,909 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:25:16,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:25:16,277 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:25:16,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:25:16 BoogieIcfgContainer [2021-03-11 20:25:16,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:25:16,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:25:16,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:25:16,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:25:16,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:25:15" (1/3) ... [2021-03-11 20:25:16,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a282e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:25:16, skipping insertion in model container [2021-03-11 20:25:16,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:15" (2/3) ... [2021-03-11 20:25:16,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a282e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:25:16, skipping insertion in model container [2021-03-11 20:25:16,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:25:16" (3/3) ... [2021-03-11 20:25:16,285 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2021-03-11 20:25:16,290 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:25:16,293 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:25:16,294 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:25:16,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,321 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,321 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,323 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,323 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,327 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,328 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,328 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,328 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,333 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,334 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,337 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,337 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,339 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,339 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:16,341 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:25:16,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:25:16,373 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:25:16,373 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:25:16,373 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:25:16,373 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:25:16,373 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:25:16,374 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:25:16,374 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:25:16,374 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:25:16,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:25:16,413 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 20:25:16,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:16,416 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 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 20:25:16,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:25:16,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 20:25:16,432 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:25:16,440 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:25:16,443 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:25:16,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-11 20:25:16,471 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 20:25:16,471 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:16,472 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 40 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-11 20:25:16,473 INFO L116 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-11 20:25:18,669 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:25:18,922 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:25:19,008 INFO L131 LiptonReduction]: Checked pairs total: 1683 [2021-03-11 20:25:19,008 INFO L133 LiptonReduction]: Total number of compositions: 48 [2021-03-11 20:25:19,010 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2590 [2021-03-11 20:25:19,017 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 20:25:19,017 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:19,017 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:19,017 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:19,018 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:19,021 INFO L82 PathProgramCache]: Analyzing trace with hash -501413399, now seen corresponding path program 1 times [2021-03-11 20:25:19,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:19,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867116254] [2021-03-11 20:25:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:19,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:19,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867116254] [2021-03-11 20:25:19,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:19,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:19,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629726344] [2021-03-11 20:25:19,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:25:19,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:19,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:25:19,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:25:19,171 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 122 [2021-03-11 20:25:19,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 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) [2021-03-11 20:25:19,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:19,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 122 [2021-03-11 20:25:19,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:19,185 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 20:25:19,190 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:19,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 20:25:19,191 INFO L132 encePairwiseOnDemand]: 121/122 looper letters, 0 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2021-03-11 20:25:19,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 41 flow [2021-03-11 20:25:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:25:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:25:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2021-03-11 20:25:19,201 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9385245901639344 [2021-03-11 20:25:19,201 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 229 transitions. [2021-03-11 20:25:19,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 229 transitions. [2021-03-11 20:25:19,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:19,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 229 transitions. [2021-03-11 20:25:19,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 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) [2021-03-11 20:25:19,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 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) [2021-03-11 20:25:19,219 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 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) [2021-03-11 20:25:19,220 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 2 states and 229 transitions. [2021-03-11 20:25:19,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 41 flow [2021-03-11 20:25:19,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 38 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:25:19,223 INFO L241 Difference]: Finished difference. Result has 24 places, 16 transitions, 38 flow [2021-03-11 20:25:19,225 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2021-03-11 20:25:19,225 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2021-03-11 20:25:19,226 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 38 flow [2021-03-11 20:25:19,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 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) [2021-03-11 20:25:19,226 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:19,226 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:19,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:25:19,226 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:19,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:19,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1636053261, now seen corresponding path program 1 times [2021-03-11 20:25:19,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:19,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729729830] [2021-03-11 20:25:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:19,337 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:25:19,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:19,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729729830] [2021-03-11 20:25:19,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:19,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:19,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418032638] [2021-03-11 20:25:19,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:19,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:19,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:19,363 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 122 [2021-03-11 20:25:19,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-03-11 20:25:19,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:19,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 122 [2021-03-11 20:25:19,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:19,388 INFO L129 PetriNetUnfolder]: 7/37 cut-off events. [2021-03-11 20:25:19,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:19,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 37 events. 7/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 91 event pairs, 5 based on Foata normal form. 1/35 useless extension candidates. Maximal degree in co-relation 61. Up to 18 conditions per place. [2021-03-11 20:25:19,390 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 4 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2021-03-11 20:25:19,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 18 transitions, 56 flow [2021-03-11 20:25:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2021-03-11 20:25:19,396 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7923497267759563 [2021-03-11 20:25:19,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2021-03-11 20:25:19,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2021-03-11 20:25:19,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:19,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2021-03-11 20:25:19,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-03-11 20:25:19,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:25:19,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:25:19,401 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 38 flow. Second operand 3 states and 290 transitions. [2021-03-11 20:25:19,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 18 transitions, 56 flow [2021-03-11 20:25:19,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:25:19,403 INFO L241 Difference]: Finished difference. Result has 27 places, 18 transitions, 57 flow [2021-03-11 20:25:19,403 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2021-03-11 20:25:19,403 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-03-11 20:25:19,404 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 57 flow [2021-03-11 20:25:19,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-03-11 20:25:19,404 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:19,404 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:19,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:25:19,404 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:19,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:19,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1909915624, now seen corresponding path program 1 times [2021-03-11 20:25:19,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:19,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454892272] [2021-03-11 20:25:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:19,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:19,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454892272] [2021-03-11 20:25:19,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:19,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:19,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446352053] [2021-03-11 20:25:19,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:19,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:19,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:19,498 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 122 [2021-03-11 20:25:19,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2021-03-11 20:25:19,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:19,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 122 [2021-03-11 20:25:19,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:19,505 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-03-11 20:25:19,505 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-03-11 20:25:19,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 22 events. 2/22 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 43. Up to 8 conditions per place. [2021-03-11 20:25:19,506 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 1 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2021-03-11 20:25:19,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 65 flow [2021-03-11 20:25:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-11 20:25:19,507 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8306010928961749 [2021-03-11 20:25:19,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-11 20:25:19,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-11 20:25:19,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:19,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-11 20:25:19,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2021-03-11 20:25:19,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:25:19,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:25:19,510 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 57 flow. Second operand 3 states and 304 transitions. [2021-03-11 20:25:19,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 65 flow [2021-03-11 20:25:19,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:19,511 INFO L241 Difference]: Finished difference. Result has 29 places, 18 transitions, 65 flow [2021-03-11 20:25:19,511 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2021-03-11 20:25:19,511 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2021-03-11 20:25:19,511 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 65 flow [2021-03-11 20:25:19,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2021-03-11 20:25:19,512 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:19,512 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:19,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:25:19,512 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:19,512 INFO L82 PathProgramCache]: Analyzing trace with hash -821957356, now seen corresponding path program 1 times [2021-03-11 20:25:19,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:19,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098489703] [2021-03-11 20:25:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:19,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:19,547 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:25:19,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:19,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098489703] [2021-03-11 20:25:19,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:19,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:19,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723487079] [2021-03-11 20:25:19,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:19,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:19,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:19,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:19,557 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:25:19,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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) [2021-03-11 20:25:19,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:19,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:25:19,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:19,614 INFO L129 PetriNetUnfolder]: 14/62 cut-off events. [2021-03-11 20:25:19,614 INFO L130 PetriNetUnfolder]: For 41/59 co-relation queries the response was YES. [2021-03-11 20:25:19,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 62 events. 14/62 cut-off events. For 41/59 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 240 event pairs, 0 based on Foata normal form. 13/74 useless extension candidates. Maximal degree in co-relation 140. Up to 21 conditions per place. [2021-03-11 20:25:19,616 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 7 selfloop transitions, 11 changer transitions 0/28 dead transitions. [2021-03-11 20:25:19,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 141 flow [2021-03-11 20:25:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2021-03-11 20:25:19,619 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.759016393442623 [2021-03-11 20:25:19,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2021-03-11 20:25:19,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2021-03-11 20:25:19,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:19,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2021-03-11 20:25:19,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 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) [2021-03-11 20:25:19,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:25:19,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:25:19,622 INFO L185 Difference]: Start difference. First operand has 29 places, 18 transitions, 65 flow. Second operand 5 states and 463 transitions. [2021-03-11 20:25:19,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 141 flow [2021-03-11 20:25:19,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:19,624 INFO L241 Difference]: Finished difference. Result has 34 places, 26 transitions, 139 flow [2021-03-11 20:25:19,624 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2021-03-11 20:25:19,624 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2021-03-11 20:25:19,624 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 139 flow [2021-03-11 20:25:19,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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) [2021-03-11 20:25:19,625 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:19,625 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:19,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:25:19,625 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:19,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:19,625 INFO L82 PathProgramCache]: Analyzing trace with hash 289129650, now seen corresponding path program 1 times [2021-03-11 20:25:19,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:19,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264567605] [2021-03-11 20:25:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:19,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:19,698 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:25:19,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:19,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264567605] [2021-03-11 20:25:19,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:19,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:19,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578232032] [2021-03-11 20:25:19,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:19,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:19,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:19,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:19,709 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 122 [2021-03-11 20:25:19,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-03-11 20:25:19,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:19,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 122 [2021-03-11 20:25:19,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:19,724 INFO L129 PetriNetUnfolder]: 10/54 cut-off events. [2021-03-11 20:25:19,724 INFO L130 PetriNetUnfolder]: For 78/111 co-relation queries the response was YES. [2021-03-11 20:25:19,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 54 events. 10/54 cut-off events. For 78/111 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 208 event pairs, 2 based on Foata normal form. 7/59 useless extension candidates. Maximal degree in co-relation 164. Up to 21 conditions per place. [2021-03-11 20:25:19,725 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 8 selfloop transitions, 6 changer transitions 0/26 dead transitions. [2021-03-11 20:25:19,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 167 flow [2021-03-11 20:25:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2021-03-11 20:25:19,726 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7896174863387978 [2021-03-11 20:25:19,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2021-03-11 20:25:19,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2021-03-11 20:25:19,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:19,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2021-03-11 20:25:19,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2021-03-11 20:25:19,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:25:19,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:25:19,728 INFO L185 Difference]: Start difference. First operand has 34 places, 26 transitions, 139 flow. Second operand 3 states and 289 transitions. [2021-03-11 20:25:19,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 167 flow [2021-03-11 20:25:19,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:25:19,730 INFO L241 Difference]: Finished difference. Result has 37 places, 26 transitions, 159 flow [2021-03-11 20:25:19,731 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2021-03-11 20:25:19,731 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2021-03-11 20:25:19,731 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 159 flow [2021-03-11 20:25:19,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-03-11 20:25:19,731 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:19,731 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:19,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:25:19,732 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:19,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:19,732 INFO L82 PathProgramCache]: Analyzing trace with hash 288749497, now seen corresponding path program 1 times [2021-03-11 20:25:19,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:19,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440041617] [2021-03-11 20:25:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:19,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:19,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:19,763 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:25:19,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:19,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440041617] [2021-03-11 20:25:19,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:19,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:19,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445066624] [2021-03-11 20:25:19,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:19,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:19,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:19,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:19,774 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:25:19,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:19,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:19,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:25:19,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:19,801 INFO L129 PetriNetUnfolder]: 9/57 cut-off events. [2021-03-11 20:25:19,801 INFO L130 PetriNetUnfolder]: For 148/211 co-relation queries the response was YES. [2021-03-11 20:25:19,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 57 events. 9/57 cut-off events. For 148/211 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 230 event pairs, 0 based on Foata normal form. 10/66 useless extension candidates. Maximal degree in co-relation 183. Up to 16 conditions per place. [2021-03-11 20:25:19,802 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 7 selfloop transitions, 5 changer transitions 6/28 dead transitions. [2021-03-11 20:25:19,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 207 flow [2021-03-11 20:25:19,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2021-03-11 20:25:19,808 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7561475409836066 [2021-03-11 20:25:19,808 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2021-03-11 20:25:19,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2021-03-11 20:25:19,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:19,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2021-03-11 20:25:19,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2021-03-11 20:25:19,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:25:19,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:25:19,811 INFO L185 Difference]: Start difference. First operand has 37 places, 26 transitions, 159 flow. Second operand 4 states and 369 transitions. [2021-03-11 20:25:19,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 207 flow [2021-03-11 20:25:19,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 193 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:19,815 INFO L241 Difference]: Finished difference. Result has 40 places, 20 transitions, 124 flow [2021-03-11 20:25:19,816 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2021-03-11 20:25:19,816 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2021-03-11 20:25:19,816 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 124 flow [2021-03-11 20:25:19,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:19,816 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:19,816 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:19,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:25:19,817 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:19,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:19,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1478145837, now seen corresponding path program 1 times [2021-03-11 20:25:19,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:19,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574084572] [2021-03-11 20:25:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:19,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:19,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:19,878 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:25:19,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:19,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574084572] [2021-03-11 20:25:19,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:19,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:19,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069923188] [2021-03-11 20:25:19,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:19,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:19,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:19,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:19,890 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 122 [2021-03-11 20:25:19,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 20 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2021-03-11 20:25:19,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:19,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 122 [2021-03-11 20:25:19,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:19,916 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-03-11 20:25:19,916 INFO L130 PetriNetUnfolder]: For 157/165 co-relation queries the response was YES. [2021-03-11 20:25:19,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 35 events. 5/35 cut-off events. For 157/165 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 2 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 124. Up to 10 conditions per place. [2021-03-11 20:25:19,917 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 3 selfloop transitions, 3 changer transitions 7/23 dead transitions. [2021-03-11 20:25:19,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 23 transitions, 167 flow [2021-03-11 20:25:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-03-11 20:25:19,918 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7602459016393442 [2021-03-11 20:25:19,918 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-03-11 20:25:19,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-03-11 20:25:19,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:19,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-03-11 20:25:19,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-03-11 20:25:19,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:25:19,921 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:25:19,921 INFO L185 Difference]: Start difference. First operand has 40 places, 20 transitions, 124 flow. Second operand 4 states and 371 transitions. [2021-03-11 20:25:19,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 23 transitions, 167 flow [2021-03-11 20:25:19,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 142 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-11 20:25:19,924 INFO L241 Difference]: Finished difference. Result has 39 places, 16 transitions, 88 flow [2021-03-11 20:25:19,924 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=39, PETRI_TRANSITIONS=16} [2021-03-11 20:25:19,924 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2021-03-11 20:25:19,924 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 16 transitions, 88 flow [2021-03-11 20:25:19,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2021-03-11 20:25:19,925 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:19,925 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:19,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:25:19,925 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:19,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1080819906, now seen corresponding path program 1 times [2021-03-11 20:25:19,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:19,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092073055] [2021-03-11 20:25:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:19,994 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:19,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:19,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:19,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:20,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092073055] [2021-03-11 20:25:20,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:20,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:20,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379876057] [2021-03-11 20:25:20,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:20,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:20,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:20,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:20,003 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2021-03-11 20:25:20,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 16 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2021-03-11 20:25:20,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:20,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2021-03-11 20:25:20,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:20,043 INFO L129 PetriNetUnfolder]: 31/74 cut-off events. [2021-03-11 20:25:20,043 INFO L130 PetriNetUnfolder]: For 588/631 co-relation queries the response was YES. [2021-03-11 20:25:20,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 74 events. 31/74 cut-off events. For 588/631 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 224 event pairs, 11 based on Foata normal form. 10/73 useless extension candidates. Maximal degree in co-relation 234. Up to 37 conditions per place. [2021-03-11 20:25:20,045 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 7 selfloop transitions, 5 changer transitions 1/23 dead transitions. [2021-03-11 20:25:20,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 23 transitions, 128 flow [2021-03-11 20:25:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2021-03-11 20:25:20,046 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7274590163934426 [2021-03-11 20:25:20,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2021-03-11 20:25:20,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2021-03-11 20:25:20,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:20,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2021-03-11 20:25:20,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-11 20:25:20,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:25:20,050 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:25:20,050 INFO L185 Difference]: Start difference. First operand has 39 places, 16 transitions, 88 flow. Second operand 4 states and 355 transitions. [2021-03-11 20:25:20,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 23 transitions, 128 flow [2021-03-11 20:25:20,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 96 flow, removed 6 selfloop flow, removed 10 redundant places. [2021-03-11 20:25:20,052 INFO L241 Difference]: Finished difference. Result has 33 places, 19 transitions, 90 flow [2021-03-11 20:25:20,052 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2021-03-11 20:25:20,052 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2021-03-11 20:25:20,052 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 90 flow [2021-03-11 20:25:20,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2021-03-11 20:25:20,053 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:20,053 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:20,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:25:20,053 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:20,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:20,054 INFO L82 PathProgramCache]: Analyzing trace with hash -815533923, now seen corresponding path program 1 times [2021-03-11 20:25:20,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:20,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263575467] [2021-03-11 20:25:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:20,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:20,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:20,101 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:20,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:20,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:20,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:20,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263575467] [2021-03-11 20:25:20,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:20,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:20,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035866854] [2021-03-11 20:25:20,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:20,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:20,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:20,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:20,112 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2021-03-11 20:25:20,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 90 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) [2021-03-11 20:25:20,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:20,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2021-03-11 20:25:20,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:20,156 INFO L129 PetriNetUnfolder]: 17/51 cut-off events. [2021-03-11 20:25:20,156 INFO L130 PetriNetUnfolder]: For 167/240 co-relation queries the response was YES. [2021-03-11 20:25:20,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 51 events. 17/51 cut-off events. For 167/240 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 120 event pairs, 1 based on Foata normal form. 17/63 useless extension candidates. Maximal degree in co-relation 175. Up to 33 conditions per place. [2021-03-11 20:25:20,157 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 7 selfloop transitions, 8 changer transitions 1/26 dead transitions. [2021-03-11 20:25:20,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 151 flow [2021-03-11 20:25:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-11 20:25:20,159 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7262295081967213 [2021-03-11 20:25:20,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-11 20:25:20,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-11 20:25:20,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:20,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-11 20:25:20,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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) [2021-03-11 20:25:20,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:25:20,162 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:25:20,162 INFO L185 Difference]: Start difference. First operand has 33 places, 19 transitions, 90 flow. Second operand 5 states and 443 transitions. [2021-03-11 20:25:20,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 151 flow [2021-03-11 20:25:20,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 141 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:20,163 INFO L241 Difference]: Finished difference. Result has 37 places, 22 transitions, 130 flow [2021-03-11 20:25:20,163 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2021-03-11 20:25:20,163 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2021-03-11 20:25:20,163 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 130 flow [2021-03-11 20:25:20,163 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) [2021-03-11 20:25:20,163 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:20,164 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:20,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:25:20,164 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:20,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash -713835360, now seen corresponding path program 1 times [2021-03-11 20:25:20,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:20,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679481456] [2021-03-11 20:25:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:20,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:20,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:20,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:20,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:20,217 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:20,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:20,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:20,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:20,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679481456] [2021-03-11 20:25:20,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:20,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:25:20,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210168570] [2021-03-11 20:25:20,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:25:20,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:20,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:25:20,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:25:20,229 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2021-03-11 20:25:20,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 130 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) [2021-03-11 20:25:20,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:20,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2021-03-11 20:25:20,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:20,283 INFO L129 PetriNetUnfolder]: 7/31 cut-off events. [2021-03-11 20:25:20,283 INFO L130 PetriNetUnfolder]: For 124/160 co-relation queries the response was YES. [2021-03-11 20:25:20,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 31 events. 7/31 cut-off events. For 124/160 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 14/44 useless extension candidates. Maximal degree in co-relation 119. Up to 17 conditions per place. [2021-03-11 20:25:20,283 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 1 selfloop transitions, 11 changer transitions 1/23 dead transitions. [2021-03-11 20:25:20,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 23 transitions, 162 flow [2021-03-11 20:25:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:25:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:25:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 525 transitions. [2021-03-11 20:25:20,286 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7172131147540983 [2021-03-11 20:25:20,286 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 525 transitions. [2021-03-11 20:25:20,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 525 transitions. [2021-03-11 20:25:20,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:20,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 525 transitions. [2021-03-11 20:25:20,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 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) [2021-03-11 20:25:20,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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) [2021-03-11 20:25:20,289 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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) [2021-03-11 20:25:20,289 INFO L185 Difference]: Start difference. First operand has 37 places, 22 transitions, 130 flow. Second operand 6 states and 525 transitions. [2021-03-11 20:25:20,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 23 transitions, 162 flow [2021-03-11 20:25:20,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 130 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 20:25:20,290 INFO L241 Difference]: Finished difference. Result has 39 places, 22 transitions, 138 flow [2021-03-11 20:25:20,291 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2021-03-11 20:25:20,291 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2021-03-11 20:25:20,291 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 138 flow [2021-03-11 20:25:20,292 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) [2021-03-11 20:25:20,292 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:20,292 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:20,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:25:20,292 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:20,292 INFO L82 PathProgramCache]: Analyzing trace with hash -316246693, now seen corresponding path program 1 times [2021-03-11 20:25:20,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:20,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791026709] [2021-03-11 20:25:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:20,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:20,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:20,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:20,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:20,332 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:25:20,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:20,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791026709] [2021-03-11 20:25:20,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:20,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:20,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341466252] [2021-03-11 20:25:20,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:20,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:20,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:20,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:20,351 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:25:20,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 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) [2021-03-11 20:25:20,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:20,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:25:20,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:20,368 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-11 20:25:20,368 INFO L130 PetriNetUnfolder]: For 58/65 co-relation queries the response was YES. [2021-03-11 20:25:20,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 24 events. 5/24 cut-off events. For 58/65 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 2/25 useless extension candidates. Maximal degree in co-relation 81. Up to 10 conditions per place. [2021-03-11 20:25:20,368 INFO L132 encePairwiseOnDemand]: 117/122 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-03-11 20:25:20,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 21 transitions, 132 flow [2021-03-11 20:25:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2021-03-11 20:25:20,370 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.739344262295082 [2021-03-11 20:25:20,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2021-03-11 20:25:20,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2021-03-11 20:25:20,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:20,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2021-03-11 20:25:20,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 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) [2021-03-11 20:25:20,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:25:20,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:25:20,374 INFO L185 Difference]: Start difference. First operand has 39 places, 22 transitions, 138 flow. Second operand 5 states and 451 transitions. [2021-03-11 20:25:20,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 21 transitions, 132 flow [2021-03-11 20:25:20,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 78 flow, removed 6 selfloop flow, removed 11 redundant places. [2021-03-11 20:25:20,375 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-03-11 20:25:20,375 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-03-11 20:25:20,375 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-03-11 20:25:20,375 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2021-03-11 20:25:20,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 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) [2021-03-11 20:25:20,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:25:20,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:25:20 BasicIcfg [2021-03-11 20:25:20,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:25:20,382 INFO L168 Benchmark]: Toolchain (without parser) took 5121.23 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 232.9 MB in the beginning and 319.1 MB in the end (delta: -86.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:20,383 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:25:20,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.41 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 232.1 MB in the beginning and 310.8 MB in the end (delta: -78.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:20,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.34 ms. Allocated memory is still 348.1 MB. Free memory was 310.8 MB in the beginning and 308.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:20,385 INFO L168 Benchmark]: Boogie Preprocessor took 34.23 ms. Allocated memory is still 348.1 MB. Free memory was 308.7 MB in the beginning and 307.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:20,385 INFO L168 Benchmark]: RCFGBuilder took 455.21 ms. Allocated memory is still 348.1 MB. Free memory was 307.3 MB in the beginning and 285.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:20,387 INFO L168 Benchmark]: TraceAbstraction took 4098.71 ms. Allocated memory is still 348.1 MB. Free memory was 284.7 MB in the beginning and 319.1 MB in the end (delta: -34.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:25:20,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 465.41 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 232.1 MB in the beginning and 310.8 MB in the end (delta: -78.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.34 ms. Allocated memory is still 348.1 MB. Free memory was 310.8 MB in the beginning and 308.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 34.23 ms. Allocated memory is still 348.1 MB. Free memory was 308.7 MB in the beginning and 307.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 455.21 ms. Allocated memory is still 348.1 MB. Free memory was 307.3 MB in the beginning and 285.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4098.71 ms. Allocated memory is still 348.1 MB. Free memory was 284.7 MB in the beginning and 319.1 MB in the end (delta: -34.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2565.7ms, 68 PlacesBefore, 26 PlacesAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 1683 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 814, positive: 736, positive conditional: 0, positive unconditional: 736, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 530, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 530, positive: 486, positive conditional: 0, positive unconditional: 486, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 206, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 195, negative conditional: 0, negative unconditional: 195, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 814, positive: 248, positive conditional: 0, positive unconditional: 248, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 530, unknown conditional: 0, unknown unconditional: 530] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4007.3ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 478.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2640.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 27 SDslu, 20 SDs, 0 SdLazy, 99 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 104.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 155.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=5, InterpolantAutomatonStates: 44, 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: 22.8ms SsaConstructionTime, 160.6ms SatisfiabilityAnalysisTime, 518.1ms InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...